asia 121 KB

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  1. # This file is in the public domain, so clarified as of
  2. # 2009-05-17 by Arthur David Olson.
  3. # This file is by no means authoritative; if you think you know better,
  4. # go ahead and edit the file (and please send any changes to
  5. # tz@iana.org for general use in the future). For more, please see
  6. # the file CONTRIBUTING in the tz distribution.
  7. # From Paul Eggert (2015-08-08):
  8. #
  9. # Unless otherwise specified, the source for data through 1990 is:
  10. # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
  11. # San Diego: ACS Publications, Inc. (2003).
  12. # Unfortunately this book contains many errors and cites no sources.
  13. #
  14. # Gwillim Law writes that a good source
  15. # for recent time zone data is the International Air Transport
  16. # Association's Standard Schedules Information Manual (IATA SSIM),
  17. # published semiannually. Law sent in several helpful summaries
  18. # of the IATA's data after 1990. Except where otherwise noted,
  19. # IATA SSIM is the source for entries after 1990.
  20. #
  21. # Another source occasionally used is Edward W. Whitman, World Time Differences,
  22. # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
  23. # I found in the UCLA library.
  24. #
  25. # For data circa 1899, a common source is:
  26. # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
  27. # http://www.jstor.org/stable/1774359
  28. #
  29. # For Russian data circa 1919, a source is:
  30. # Byalokoz EL. New Counting of Time in Russia since July 1, 1919.
  31. # (See the 'europe' file for a fuller citation.)
  32. #
  33. # A reliable and entertaining source about time zones is
  34. # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
  35. #
  36. # I invented the abbreviations marked '*' in the following table;
  37. # the rest are from earlier versions of this file, or from other sources.
  38. # Corrections are welcome!
  39. # std dst
  40. # LMT Local Mean Time
  41. # 2:00 EET EEST Eastern European Time
  42. # 2:00 IST IDT Israel
  43. # 3:00 AST ADT Arabia*
  44. # 3:30 IRST IRDT Iran*
  45. # 4:00 GST Gulf*
  46. # 5:30 IST India
  47. # 7:00 ICT Indochina, most times and locations*
  48. # 7:00 WIB west Indonesia (Waktu Indonesia Barat)
  49. # 8:00 WITA central Indonesia (Waktu Indonesia Tengah)
  50. # 8:00 CST China
  51. # 8:00 IDT Indochina, 1943-45, 1947-55, 1960-75 (some locations)*
  52. # 8:00 JWST Western Standard Time (Japan, 1896/1937)*
  53. # 8:30 KST KDT Korea when at +0830*
  54. # 9:00 JCST Central Standard Time (Japan, 1896/1937)
  55. # 9:00 WIT east Indonesia (Waktu Indonesia Timur)
  56. # 9:00 JST JDT Japan
  57. # 9:00 KST KDT Korea when at +09
  58. # 9:30 ACST Australian Central Standard Time
  59. #
  60. # See the 'europe' file for Russia and Turkey in Asia.
  61. # From Guy Harris:
  62. # Incorporates data for Singapore from Robert Elz' asia 1.1, as well as
  63. # additional information from Tom Yap, Sun Microsystems Intercontinental
  64. # Technical Support (including a page from the Official Airline Guide -
  65. # Worldwide Edition). The names for time zones are guesses.
  66. ###############################################################################
  67. # These rules are stolen from the 'europe' file.
  68. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  69. Rule EUAsia 1981 max - Mar lastSun 1:00u 1:00 S
  70. Rule EUAsia 1979 1995 - Sep lastSun 1:00u 0 -
  71. Rule EUAsia 1996 max - Oct lastSun 1:00u 0 -
  72. Rule E-EurAsia 1981 max - Mar lastSun 0:00 1:00 S
  73. Rule E-EurAsia 1979 1995 - Sep lastSun 0:00 0 -
  74. Rule E-EurAsia 1996 max - Oct lastSun 0:00 0 -
  75. Rule RussiaAsia 1981 1984 - Apr 1 0:00 1:00 S
  76. Rule RussiaAsia 1981 1983 - Oct 1 0:00 0 -
  77. Rule RussiaAsia 1984 1991 - Sep lastSun 2:00s 0 -
  78. Rule RussiaAsia 1985 1991 - Mar lastSun 2:00s 1:00 S
  79. Rule RussiaAsia 1992 only - Mar lastSat 23:00 1:00 S
  80. Rule RussiaAsia 1992 only - Sep lastSat 23:00 0 -
  81. Rule RussiaAsia 1993 max - Mar lastSun 2:00s 1:00 S
  82. Rule RussiaAsia 1993 1995 - Sep lastSun 2:00s 0 -
  83. Rule RussiaAsia 1996 max - Oct lastSun 2:00s 0 -
  84. # Afghanistan
  85. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  86. Zone Asia/Kabul 4:36:48 - LMT 1890
  87. 4:00 - AFT 1945
  88. 4:30 - AFT
  89. # Armenia
  90. # From Paul Eggert (2006-03-22):
  91. # Shanks & Pottenger have Yerevan switching to 3:00 (with Russian DST)
  92. # in spring 1991, then to 4:00 with no DST in fall 1995, then
  93. # readopting Russian DST in 1997. Go with Shanks & Pottenger, even
  94. # when they disagree with others. Edgar Der-Danieliantz
  95. # reported (1996-05-04) that Yerevan probably wouldn't use DST
  96. # in 1996, though it did use DST in 1995. IATA SSIM (1991/1998) reports that
  97. # Armenia switched from 3:00 to 4:00 in 1998 and observed DST after 1991,
  98. # but started switching at 3:00s in 1998.
  99. # From Arthur David Olson (2011-06-15):
  100. # While Russia abandoned DST in 2011, Armenia may choose to
  101. # follow Russia's "old" rules.
  102. # From Alexander Krivenyshev (2012-02-10):
  103. # According to News Armenia, on Feb 9, 2012,
  104. # http://newsarmenia.ru/society/20120209/42609695.html
  105. #
  106. # The Armenia National Assembly adopted final reading of Amendments to the
  107. # Law "On procedure of calculation time on the territory of the Republic of
  108. # Armenia" according to which Armenia [is] abolishing Daylight Saving Time.
  109. # or
  110. # (brief)
  111. # http://www.worldtimezone.com/dst_news/dst_news_armenia03.html
  112. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  113. Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2
  114. 3:00 - YERT 1957 Mar # Yerevan Time
  115. 4:00 RussiaAsia YER%sT 1991 Mar 31 2:00s
  116. 3:00 1:00 YERST 1991 Sep 23 # independence
  117. 3:00 RussiaAsia AM%sT 1995 Sep 24 2:00s
  118. 4:00 - AMT 1997
  119. 4:00 RussiaAsia AM%sT 2012 Mar 25 2:00s
  120. 4:00 - AMT
  121. # Azerbaijan
  122. # From Rustam Aliyev of the Azerbaijan Internet Forum (2005-10-23):
  123. # According to the resolution of Cabinet of Ministers, 1997
  124. # From Paul Eggert (2015-09-17): It was Resolution No. 21 (1997-03-17).
  125. # http://code.az/files/daylight_res.pdf
  126. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  127. Rule Azer 1997 max - Mar lastSun 4:00 1:00 S
  128. Rule Azer 1997 max - Oct lastSun 5:00 0 -
  129. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  130. Zone Asia/Baku 3:19:24 - LMT 1924 May 2
  131. 3:00 - BAKT 1957 Mar # Baku Time
  132. 4:00 RussiaAsia BAK%sT 1991 Mar 31 2:00s
  133. 3:00 1:00 BAKST 1991 Aug 30 # independence
  134. 3:00 RussiaAsia AZ%sT 1992 Sep lastSat 23:00
  135. 4:00 - AZT 1996 # Azerbaijan Time
  136. 4:00 EUAsia AZ%sT 1997
  137. 4:00 Azer AZ%sT
  138. # Bahrain
  139. # See Asia/Qatar.
  140. # Bangladesh
  141. # From Alexander Krivenyshev (2009-05-13):
  142. # According to newspaper Asian Tribune (May 6, 2009) Bangladesh may introduce
  143. # Daylight Saving Time from June 16 to Sept 30
  144. #
  145. # Bangladesh to introduce daylight saving time likely from June 16
  146. # http://www.asiantribune.com/?q=node/17288
  147. # http://www.worldtimezone.com/dst_news/dst_news_bangladesh02.html
  148. #
  149. # "... Bangladesh government has decided to switch daylight saving time from
  150. # June
  151. # 16 till September 30 in a bid to ensure maximum use of daylight to cope with
  152. # crippling power crisis. "
  153. #
  154. # The switch will remain in effect from June 16 to Sept 30 (2009) but if
  155. # implemented the next year, it will come in force from April 1, 2010
  156. # From Steffen Thorsen (2009-06-02):
  157. # They have finally decided now, but changed the start date to midnight between
  158. # the 19th and 20th, and they have not set the end date yet.
  159. #
  160. # Some sources:
  161. # http://in.reuters.com/article/southAsiaNews/idINIndia-40017620090601
  162. # http://bdnews24.com/details.php?id=85889&cid=2
  163. #
  164. # Our wrap-up:
  165. # http://www.timeanddate.com/news/time/bangladesh-daylight-saving-2009.html
  166. # From A. N. M. Kamrus Saadat (2009-06-15):
  167. # Finally we've got the official mail regarding DST start time where DST start
  168. # time is mentioned as Jun 19 2009, 23:00 from BTRC (Bangladesh
  169. # Telecommunication Regulatory Commission).
  170. #
  171. # No DST end date has been announced yet.
  172. # From Alexander Krivenyshev (2009-09-25):
  173. # Bangladesh won't go back to Standard Time from October 1, 2009,
  174. # instead it will continue DST measure till the cabinet makes a fresh decision.
  175. #
  176. # Following report by same newspaper-"The Daily Star Friday":
  177. # "DST change awaits cabinet decision-Clock won't go back by 1-hr from Oct 1"
  178. # http://www.thedailystar.net/newDesign/news-details.php?nid=107021
  179. # http://www.worldtimezone.com/dst_news/dst_news_bangladesh04.html
  180. # From Steffen Thorsen (2009-10-13):
  181. # IANS (Indo-Asian News Service) now reports:
  182. # Bangladesh has decided that the clock advanced by an hour to make
  183. # maximum use of daylight hours as an energy saving measure would
  184. # "continue for an indefinite period."
  185. #
  186. # One of many places where it is published:
  187. # http://www.thaindian.com/newsportal/business/bangladesh-to-continue-indefinitely-with-advanced-time_100259987.html
  188. # From Alexander Krivenyshev (2009-12-24):
  189. # According to Bangladesh newspaper "The Daily Star,"
  190. # Bangladesh will change its clock back to Standard Time on Dec 31, 2009.
  191. #
  192. # Clock goes back 1-hr on Dec 31 night.
  193. # http://www.thedailystar.net/newDesign/news-details.php?nid=119228
  194. # http://www.worldtimezone.com/dst_news/dst_news_bangladesh05.html
  195. #
  196. # "...The government yesterday decided to put the clock back by one hour
  197. # on December 31 midnight and the new time will continue until March 31,
  198. # 2010 midnight. The decision came at a cabinet meeting at the Prime
  199. # Minister's Office last night..."
  200. # From Alexander Krivenyshev (2010-03-22):
  201. # According to Bangladesh newspaper "The Daily Star,"
  202. # Cabinet cancels Daylight Saving Time
  203. # http://www.thedailystar.net/newDesign/latest_news.php?nid=22817
  204. # http://www.worldtimezone.com/dst_news/dst_news_bangladesh06.html
  205. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  206. Rule Dhaka 2009 only - Jun 19 23:00 1:00 S
  207. Rule Dhaka 2009 only - Dec 31 24:00 0 -
  208. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  209. Zone Asia/Dhaka 6:01:40 - LMT 1890
  210. 5:53:20 - HMT 1941 Oct # Howrah Mean Time?
  211. 6:30 - BURT 1942 May 15 # Burma Time
  212. 5:30 - IST 1942 Sep
  213. 6:30 - BURT 1951 Sep 30
  214. 6:00 - DACT 1971 Mar 26 # Dacca Time
  215. 6:00 - BDT 2009
  216. 6:00 Dhaka BD%sT
  217. # Bhutan
  218. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  219. Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu
  220. 5:30 - IST 1987 Oct
  221. 6:00 - BTT # Bhutan Time
  222. # British Indian Ocean Territory
  223. # Whitman and the 1995 CIA time zone map say 5:00, but the
  224. # 1997 and later maps say 6:00. Assume the switch occurred in 1996.
  225. # We have no information as to when standard time was introduced;
  226. # assume it occurred in 1907, the same year as Mauritius (which
  227. # then contained the Chagos Archipelago).
  228. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  229. Zone Indian/Chagos 4:49:40 - LMT 1907
  230. 5:00 - IOT 1996 # BIOT Time
  231. 6:00 - IOT
  232. # Brunei
  233. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  234. Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan
  235. 7:30 - BNT 1933
  236. 8:00 - BNT
  237. # Burma / Myanmar
  238. # Milne says 6:24:40 was the meridian of the time ball observatory at Rangoon.
  239. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  240. Zone Asia/Rangoon 6:24:40 - LMT 1880 # or Yangon
  241. 6:24:40 - RMT 1920 # Rangoon Mean Time?
  242. 6:30 - BURT 1942 May # Burma Time
  243. 9:00 - JST 1945 May 3
  244. 6:30 - MMT # Myanmar Time
  245. # Cambodia
  246. # See Asia/Bangkok.
  247. # China
  248. # From Guy Harris:
  249. # People's Republic of China. Yes, they really have only one time zone.
  250. # From Bob Devine (1988-01-28):
  251. # No they don't. See TIME mag, 1986-02-17 p.52. Even though
  252. # China is across 4 physical time zones, before Feb 1, 1986 only the
  253. # Peking (Beijing) time zone was recognized. Since that date, China
  254. # has two of 'em - Peking's and Ürümqi (named after the capital of
  255. # the Xinjiang Uyghur Autonomous Region). I don't know about DST for it.
  256. #
  257. # . . .I just deleted the DST table and this editor makes it too
  258. # painful to suck in another copy. So, here is what I have for
  259. # DST start/end dates for Peking's time zone (info from AP):
  260. #
  261. # 1986 May 4 - Sept 14
  262. # 1987 mid-April - ??
  263. # From U. S. Naval Observatory (1989-01-19):
  264. # CHINA 8 H AHEAD OF UTC ALL OF CHINA, INCL TAIWAN
  265. # CHINA 9 H AHEAD OF UTC APR 17 - SEP 10
  266. # From Paul Eggert (2008-02-11):
  267. # Jim Mann, "A clumsy embrace for another western custom: China on daylight
  268. # time - sort of", Los Angeles Times, 1986-05-05 ... [says] that China began
  269. # observing daylight saving time in 1986.
  270. # From Paul Eggert (2014-06-30):
  271. # Shanks & Pottenger have China switching to a single time zone in 1980, but
  272. # this doesn't seem to be correct. They also write that China observed summer
  273. # DST from 1986 through 1991, which seems to match the above commentary, so
  274. # go with them for DST rules as follows:
  275. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  276. Rule Shang 1940 only - Jun 3 0:00 1:00 D
  277. Rule Shang 1940 1941 - Oct 1 0:00 0 S
  278. Rule Shang 1941 only - Mar 16 0:00 1:00 D
  279. Rule PRC 1986 only - May 4 0:00 1:00 D
  280. Rule PRC 1986 1991 - Sep Sun>=11 0:00 0 S
  281. Rule PRC 1987 1991 - Apr Sun>=10 0:00 1:00 D
  282. # From Anthony Fok (2001-12-20):
  283. # BTW, I did some research on-line and found some info regarding these five
  284. # historic timezones from some Taiwan websites. And yes, there are official
  285. # Chinese names for these locales (before 1949).
  286. #
  287. # From Jesper Nørgaard Welen (2006-07-14):
  288. # I have investigated the timezones around 1970 on the
  289. # http://www.astro.com/atlas site [with provinces and county
  290. # boundaries summarized below].... A few other exceptions were two
  291. # counties on the Sichuan side of the Xizang-Sichuan border,
  292. # counties Dege and Baiyu which lies on the Sichuan side and are
  293. # therefore supposed to be GMT+7, Xizang region being GMT+6, but Dege
  294. # county is GMT+8 according to astro.com while Baiyu county is GMT+6
  295. # (could be true), for the moment I am assuming that those two
  296. # counties are mistakes in the astro.com data.
  297. # From Paul Eggert (2014-06-30):
  298. # Alois Treindl kindly sent me translations of the following two sources:
  299. #
  300. # (1)
  301. # Guo Qingsheng (National Time-Service Center, CAS, Xi'an 710600, China)
  302. # Beijing Time at the Beginning of the PRC
  303. # China Historical Materials of Science and Technology
  304. # (Zhongguo ke ji shi liao, 中国科技史料), Vol. 24, No. 1 (2003)
  305. # It gives evidence that at the beginning of the PRC, Beijing time was
  306. # officially apparent solar time! However, Guo also says that the
  307. # evidence is dubious, as the relevant institute of astronomy had not
  308. # been taken over by the PRC yet. It's plausible that apparent solar
  309. # time was announced but never implemented, and that people continued
  310. # to use UT+8. As the Shanghai radio station (and I presume the
  311. # observatory) was still under control of French missionaries, it
  312. # could well have ignored any such mandate.
  313. #
  314. # (2)
  315. # Guo Qing-sheng (Shaanxi Astronomical Observatory, CAS, Xi'an 710600, China)
  316. # A Study on the Standard Time Changes for the Past 100 Years in China
  317. # [undated and unknown publication location]
  318. # It says several things:
  319. # * The Qing dynasty used local apparent solar time throughout China.
  320. # * The Republic of China instituted Beijing mean solar time effective
  321. # the official calendar book of 1914.
  322. # * The French Concession in Shanghai set up signal stations in
  323. # French docks in the 1890s, controlled by Xujiahui (Zikawei)
  324. # Observatory and set to local mean time.
  325. # * "From the end of the 19th century" it changed to UT+8.
  326. # * Chinese Customs (by then reduced to a tool of foreign powers)
  327. # eventually standardized on this time for all ports, and it
  328. # became used by railways as well.
  329. # * In 1918 the Central Observatory proposed dividing China into
  330. # five time zones (see below for details). This caught on
  331. # at first only in coastal areas observing UT+8.
  332. # * During WWII all of China was in theory was at UT+7. In practice
  333. # this was ignored in the west, and I presume was ignored in
  334. # Japanese-occupied territory.
  335. # * Japanese-occupied Manchuria was at UT+9, i.e., Japan time.
  336. # * The five-zone plan was resurrected after WWII and officially put into
  337. # place (with some modifications) in March 1948. It's not clear
  338. # how well it was observed in areas under Nationalist control.
  339. # * The People's Liberation Army used UT+8 during the civil war.
  340. #
  341. # An AP article "Shanghai Internat'l Area Little Changed" in the
  342. # Lewiston (ME) Daily Sun (1939-05-29), p 17, said "Even the time is
  343. # different - the occupied districts going by Tokyo time, an hour
  344. # ahead of that prevailing in the rest of Shanghai." Guess that the
  345. # Xujiahui Observatory was under French control and stuck with UT+8.
  346. #
  347. # In earlier versions of this file, China had many separate Zone entries, but
  348. # this was based on what were apparently incorrect data in Shanks & Pottenger.
  349. # This has now been simplified to the two entries Asia/Shanghai and
  350. # Asia/Urumqi, with the others being links for backward compatibility.
  351. # Proposed in 1918 and theoretically in effect until 1949 (although in practice
  352. # mainly observed in coastal areas), the five zones were:
  353. #
  354. # Changbai Time ("Long-white Time", Long-white = Heilongjiang area) UT+8.5
  355. # Asia/Harbin (currently a link to Asia/Shanghai)
  356. # Heilongjiang (except Mohe county), Jilin
  357. #
  358. # Zhongyuan Time ("Central plain Time") UT+8
  359. # Asia/Shanghai
  360. # most of China
  361. # This currently represents most other zones as well,
  362. # as apparently these regions have been the same since 1970.
  363. # Milne gives 8:05:43.2 for Xujiahui Observatory time; round to nearest.
  364. # Guo says Shanghai switched to UT+8 "from the end of the 19th century".
  365. #
  366. # Long-shu Time (probably due to Long and Shu being two names of that area) UT+7
  367. # Asia/Chongqing (currently a link to Asia/Shanghai)
  368. # Guangxi, Guizhou, Hainan, Ningxia, Sichuan, Shaanxi, and Yunnan;
  369. # most of Gansu; west Inner Mongolia; west Qinghai; and the Guangdong
  370. # counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing,
  371. # Yangchun, Yangjiang, Yu'nan, and Yunfu.
  372. #
  373. # Xin-zang Time ("Xinjiang-Tibet Time") UT+6
  374. # Asia/Urumqi
  375. # This currently represents Kunlun Time as well,
  376. # as apparently the two regions have been the same since 1970.
  377. # The Gansu counties Aksay, Anxi, Dunhuang, Subei; west Qinghai;
  378. # the Guangdong counties Xuwen, Haikang, Suixi, Lianjiang,
  379. # Zhanjiang, Wuchuan, Huazhou, Gaozhou, Maoming, Dianbai, and Xinyi;
  380. # east Tibet, including Lhasa, Chamdo, Shigaise, Jimsar, Shawan and Hutubi;
  381. # east Xinjiang, including Ürümqi, Turpan, Karamay, Korla, Minfeng, Jinghe,
  382. # Wusu, Qiemo, Xinyan, Wulanwusu, Jinghe, Yumin, Tacheng, Tuoli, Emin,
  383. # Shihezi, Changji, Yanqi, Heshuo, Tuokexun, Tulufan, Shanshan, Hami,
  384. # Fukang, Kuitun, Kumukuli, Miquan, Qitai, and Turfan.
  385. #
  386. # Kunlun Time UT+5.5
  387. # Asia/Kashgar (currently a link to Asia/Urumqi)
  388. # West Tibet, including Pulan, Aheqi, Shufu, Shule;
  389. # West Xinjiang, including Aksu, Atushi, Yining, Hetian, Cele, Luopu, Nileke,
  390. # Zhaosu, Tekesi, Gongliu, Chabuchaer, Huocheng, Bole, Pishan, Suiding,
  391. # and Yarkand.
  392. # From Luther Ma (2009-10-17):
  393. # Almost all (>99.9%) ethnic Chinese (properly ethnic Han) living in
  394. # Xinjiang use Chinese Standard Time. Some are aware of Xinjiang time,
  395. # but have no need of it. All planes, trains, and schools function on
  396. # what is called "Beijing time." When Han make an appointment in Chinese
  397. # they implicitly use Beijing time.
  398. #
  399. # On the other hand, ethnic Uyghurs, who make up about half the
  400. # population of Xinjiang, typically use "Xinjiang time" which is two
  401. # hours behind Beijing time, or UTC +0600. The government of the Xinjiang
  402. # Uyghur Autonomous Region, (XAUR, or just Xinjiang for short) as well as
  403. # local governments such as the Ürümqi city government use both times in
  404. # publications, referring to what is popularly called Xinjiang time as
  405. # "Ürümqi time." When Uyghurs make an appointment in the Uyghur language
  406. # they almost invariably use Xinjiang time.
  407. #
  408. # (Their ethnic Han compatriots would typically have no clue of its
  409. # widespread use, however, because so extremely few of them are fluent in
  410. # Uyghur, comparable to the number of Anglo-Americans fluent in Navajo.)
  411. #
  412. # (...As with the rest of China there was a brief interval ending in 1990
  413. # or 1991 when summer time was in use. The confusion was severe, with
  414. # the province not having dual times but four times in use at the same
  415. # time. Some areas remained on standard Xinjiang time or Beijing time and
  416. # others moving their clocks ahead.)
  417. # From Luther Ma (2009-11-19):
  418. # With the risk of being redundant to previous answers these are the most common
  419. # English "transliterations" (w/o using non-English symbols):
  420. #
  421. # 1. Wulumuqi...
  422. # 2. Kashi...
  423. # 3. Urumqi...
  424. # 4. Kashgar...
  425. # ...
  426. # 5. It seems that Uyghurs in Ürümqi has been using Xinjiang since at least the
  427. # 1960's. I know of one Han, now over 50, who grew up in the surrounding
  428. # countryside and used Xinjiang time as a child.
  429. #
  430. # 6. Likewise for Kashgar and the rest of south Xinjiang I don't know of any
  431. # start date for Xinjiang time.
  432. #
  433. # Without having access to local historical records, nor the ability to legally
  434. # publish them, I would go with October 1, 1949, when Xinjiang became the Uyghur
  435. # Autonomous Region under the PRC. (Before that Uyghurs, of course, would also
  436. # not be using Beijing time, but some local time.)
  437. # From David Cochrane (2014-03-26):
  438. # Just a confirmation that Ürümqi time was implemented in Ürümqi on 1 Feb 1986:
  439. # http://content.time.com/time/magazine/article/0,9171,960684,00.html
  440. # From Luther Ma (2014-04-22):
  441. # I have interviewed numerous people of various nationalities and from
  442. # different localities in Xinjiang and can confirm the information in Guo's
  443. # report regarding Xinjiang, as well as the Time article reference by David
  444. # Cochrane. Whether officially recognized or not (and both are officially
  445. # recognized), two separate times have been in use in Xinjiang since at least
  446. # the Cultural Revolution: Xinjiang Time (XJT), aka Ürümqi Time or local time;
  447. # and Beijing Time. There is no confusion in Xinjiang as to which name refers
  448. # to which time. Both are widely used in the province, although in some
  449. # population groups might be use one to the exclusion of the other. The only
  450. # problem is that computers and smart phones list Ürümqi (or Kashgar) as
  451. # having the same time as Beijing.
  452. # From Paul Eggert (2014-06-30):
  453. # In the early days of the PRC, Tibet was given its own time zone (UT+6) but
  454. # this was withdrawn in 1959 and never reinstated; see Tubten Khétsun,
  455. # Memories of life in Lhasa under Chinese Rule, Columbia U Press, ISBN
  456. # 978-0231142861 (2008), translator's introduction by Matthew Akester, p x.
  457. # As this is before our 1970 cutoff, Tibet doesn't need a separate zone.
  458. #
  459. # Xinjiang Time is well-documented as being officially recognized. E.g., see
  460. # "The Working-Calendar for The Xinjiang Uygur Autonomous Region Government"
  461. # <http://www.sinkiang.gov.cn/service/ourworking/> (2014-04-22).
  462. # Unfortunately, we have no good records of time in Xinjiang before 1986.
  463. # During the 20th century parts of Xinjiang were ruled by the Qing dynasty,
  464. # the Republic of China, various warlords, the First and Second East Turkestan
  465. # Republics, the Soviet Union, the Kuomintang, and the People's Republic of
  466. # China, and tracking down all these organizations' timekeeping rules would be
  467. # quite a trick. Approximate this lost history by a transition from LMT to
  468. # XJT at the start of 1928, the year of accession of the warlord Jin Shuren,
  469. # which happens to be the date given by Shanks & Pottenger (no doubt as a
  470. # guess) as the transition from LMT. Ignore the usage of UT+8 before
  471. # 1986-02-01 under the theory that the transition date to UT+8 is unknown and
  472. # that the sort of users who prefer Asia/Urumqi now typically ignored the
  473. # UT+8 mandate back then.
  474. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  475. # Beijing time, used throughout China; represented by Shanghai.
  476. Zone Asia/Shanghai 8:05:43 - LMT 1901
  477. 8:00 Shang C%sT 1949
  478. 8:00 PRC C%sT
  479. # Xinjiang time, used by many in western China; represented by Ürümqi / Ürümchi
  480. # / Wulumuqi. (Please use Asia/Shanghai if you prefer Beijing time.)
  481. Zone Asia/Urumqi 5:50:20 - LMT 1928
  482. 6:00 - XJT
  483. # Hong Kong (Xianggang)
  484. # Milne gives 7:36:41.7; round this.
  485. # From Lee Yiu Chung (2009-10-24):
  486. # I found there are some mistakes for the...DST rule for Hong
  487. # Kong. [According] to the DST record from Hong Kong Observatory (actually,
  488. # it is not [an] observatory, but the official meteorological agency of HK,
  489. # and also serves as the official timing agency), there are some missing
  490. # and incorrect rules. Although the exact switch over time is missing, I
  491. # think 3:30 is correct. The official DST record for Hong Kong can be
  492. # obtained from
  493. # http://www.hko.gov.hk/gts/time/Summertime.htm
  494. # From Arthur David Olson (2009-10-28):
  495. # Here are the dates given at
  496. # http://www.hko.gov.hk/gts/time/Summertime.htm
  497. # as of 2009-10-28:
  498. # Year Period
  499. # 1941 1 Apr to 30 Sep
  500. # 1942 Whole year
  501. # 1943 Whole year
  502. # 1944 Whole year
  503. # 1945 Whole year
  504. # 1946 20 Apr to 1 Dec
  505. # 1947 13 Apr to 30 Dec
  506. # 1948 2 May to 31 Oct
  507. # 1949 3 Apr to 30 Oct
  508. # 1950 2 Apr to 29 Oct
  509. # 1951 1 Apr to 28 Oct
  510. # 1952 6 Apr to 25 Oct
  511. # 1953 5 Apr to 1 Nov
  512. # 1954 21 Mar to 31 Oct
  513. # 1955 20 Mar to 6 Nov
  514. # 1956 18 Mar to 4 Nov
  515. # 1957 24 Mar to 3 Nov
  516. # 1958 23 Mar to 2 Nov
  517. # 1959 22 Mar to 1 Nov
  518. # 1960 20 Mar to 6 Nov
  519. # 1961 19 Mar to 5 Nov
  520. # 1962 18 Mar to 4 Nov
  521. # 1963 24 Mar to 3 Nov
  522. # 1964 22 Mar to 1 Nov
  523. # 1965 18 Apr to 17 Oct
  524. # 1966 17 Apr to 16 Oct
  525. # 1967 16 Apr to 22 Oct
  526. # 1968 21 Apr to 20 Oct
  527. # 1969 20 Apr to 19 Oct
  528. # 1970 19 Apr to 18 Oct
  529. # 1971 18 Apr to 17 Oct
  530. # 1972 16 Apr to 22 Oct
  531. # 1973 22 Apr to 21 Oct
  532. # 1973/74 30 Dec 73 to 20 Oct 74
  533. # 1975 20 Apr to 19 Oct
  534. # 1976 18 Apr to 17 Oct
  535. # 1977 Nil
  536. # 1978 Nil
  537. # 1979 13 May to 21 Oct
  538. # 1980 to Now Nil
  539. # The page does not give start or end times of day.
  540. # The page does not give a start date for 1942.
  541. # The page does not givw an end date for 1945.
  542. # The Japanese occupation of Hong Kong began on 1941-12-25.
  543. # The Japanese surrender of Hong Kong was signed 1945-09-15.
  544. # For lack of anything better, use start of those days as the transition times.
  545. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  546. Rule HK 1941 only - Apr 1 3:30 1:00 S
  547. Rule HK 1941 only - Sep 30 3:30 0 -
  548. Rule HK 1946 only - Apr 20 3:30 1:00 S
  549. Rule HK 1946 only - Dec 1 3:30 0 -
  550. Rule HK 1947 only - Apr 13 3:30 1:00 S
  551. Rule HK 1947 only - Dec 30 3:30 0 -
  552. Rule HK 1948 only - May 2 3:30 1:00 S
  553. Rule HK 1948 1951 - Oct lastSun 3:30 0 -
  554. Rule HK 1952 only - Oct 25 3:30 0 -
  555. Rule HK 1949 1953 - Apr Sun>=1 3:30 1:00 S
  556. Rule HK 1953 only - Nov 1 3:30 0 -
  557. Rule HK 1954 1964 - Mar Sun>=18 3:30 1:00 S
  558. Rule HK 1954 only - Oct 31 3:30 0 -
  559. Rule HK 1955 1964 - Nov Sun>=1 3:30 0 -
  560. Rule HK 1965 1976 - Apr Sun>=16 3:30 1:00 S
  561. Rule HK 1965 1976 - Oct Sun>=16 3:30 0 -
  562. Rule HK 1973 only - Dec 30 3:30 1:00 S
  563. Rule HK 1979 only - May Sun>=8 3:30 1:00 S
  564. Rule HK 1979 only - Oct Sun>=16 3:30 0 -
  565. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  566. Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30
  567. 8:00 HK HK%sT 1941 Dec 25
  568. 9:00 - JST 1945 Sep 15
  569. 8:00 HK HK%sT
  570. ###############################################################################
  571. # Taiwan
  572. # From smallufo (2010-04-03):
  573. # According to Taiwan's CWB [Central Weather Bureau],
  574. # http://www.cwb.gov.tw/V6/astronomy/cdata/summert.htm
  575. # Taipei has DST in 1979 between July 1st and Sep 30.
  576. # From Yu-Cheng Chuang (2013-07-12):
  577. # On Dec 28, 1895, the Meiji Emperor announced Ordinance No. 167 of
  578. # Meiji Year 28 "The clause about standard time", mentioned that
  579. # Taiwan and Penghu Islands, as well as Yaeyama and Miyako Islands
  580. # (both in Okinawa) adopt the Western Standard Time which is based on
  581. # 120E. The adoption began from Jan 1, 1896. The original text can be
  582. # found on Wikisource:
  583. # http://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時)
  584. # ... This could be the first adoption of time zone in Taiwan, because
  585. # during the Qing Dynasty, it seems that there was no time zone
  586. # declared officially.
  587. #
  588. # Later, in the beginning of World War II, on Sep 25, 1937, the Showa
  589. # Emperor announced Ordinance No. 529 of Showa Year 12 "The clause of
  590. # revision in the ordinance No. 167 of Meiji year 28 about standard
  591. # time", in which abolished the adoption of Western Standard Time in
  592. # western islands (listed above), which means the whole Japan
  593. # territory, including later occupations, adopt Japan Central Time
  594. # (UTC+9). The adoption began on Oct 1, 1937. The original text can
  595. # be found on Wikisource:
  596. # http://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件
  597. #
  598. # That is, the time zone of Taipei switched to UTC+9 on Oct 1, 1937.
  599. # From Yu-Cheng Chuang (2014-07-02):
  600. # I've found more evidence about when the time zone was switched from UTC+9
  601. # back to UTC+8 after WW2. I believe it was on Sep 21, 1945. In a document
  602. # during Japanese era [1] in which the officer told the staff to change time
  603. # zone back to Western Standard Time (UTC+8) on Sep 21. And in another
  604. # history page of National Cheng Kung University [2], on Sep 21 there is a
  605. # note "from today, switch back to Western Standard Time". From these two
  606. # materials, I believe that the time zone change happened on Sep 21. And
  607. # today I have found another monthly journal called "The Astronomical Herald"
  608. # from The Astronomical Society of Japan [3] in which it mentioned the fact
  609. # that:
  610. #
  611. # 1. Standard Time of the Country (Japan) was adopted on Jan 1, 1888, using
  612. # the time at 135E (GMT+9)
  613. #
  614. # 2. Standard Time of the Country was renamed to Central Standard Time, on Jan
  615. # 1, 1898, and on the same day, the new territories Taiwan and Penghu islands,
  616. # as well as Yaeyama and Miyako islands, adopted a new time zone called
  617. # Western Standard Time, which is in GMT+8.
  618. #
  619. # 3. Western Standard Time was deprecated on Sep 30, 1937. From then all the
  620. # territories of Japan adopted the same time zone, which is Central Standard
  621. # Time.
  622. #
  623. # [1] Academica Historica, Taiwan:
  624. # http://163.29.208.22:8080/govsaleShowImage/connect_img.php?s=00101738900090036&e=00101738900090037
  625. # [2] Nat'l Cheng Kung University 70th Anniversary Special Site:
  626. # http://www.ncku.edu.tw/~ncku70/menu/001/01_01.htm
  627. # [3] Yukio Niimi, The Standard Time in Japan (1997), p.475:
  628. # http://www.asj.or.jp/geppou/archive_open/1997/pdf/19971001c.pdf
  629. # Yu-Cheng Chuang (2014-07-03):
  630. # I finally have found the real official gazette about changing back to
  631. # Western Standard Time on Sep 21 in Taiwan. It's Taiwan Governor-General
  632. # Bulletin No. 386 in Showa 20 years (1945), published on Sep 19, 1945. [1] ...
  633. # [It] abolishes Bulletin No. 207 in Showa 12 years (1937), which is a local
  634. # bulletin in Taiwan for that Ordinance No. 529. It also mentioned that 1am on
  635. # Sep 21, 1945 will be 12am on Sep 21. I think this bulletin is much more
  636. # official than the one I mentioned in my first mail, because it's from the
  637. # top-level government in Taiwan. If you're going to quote any resource, this
  638. # would be a good one.
  639. # [1] Taiwan Governor-General Gazette, No. 1018, Sep 19, 1945:
  640. # http://db2.th.gov.tw/db2/view/viewImg.php?imgcode=0072031018a&num=19&bgn=019&end=019&otherImg=&type=gener
  641. # From Yu-Cheng Chuang (2014-07-02):
  642. # In 1946, DST in Taiwan was from May 15 and ended on Sep 30. The info from
  643. # Central Weather Bureau website was not correct.
  644. #
  645. # Original Bulletin:
  646. # http://subtpg.tpg.gov.tw/og/image2.asp?f=03502F0AKM1AF
  647. # http://subtpg.tpg.gov.tw/og/image2.asp?f=0350300AKM1B0 (cont.)
  648. #
  649. # In 1947, DST in Taiwan was expanded to Oct 31. There is a backup of that
  650. # telegram announcement from Taiwan Province Government:
  651. #
  652. # http://subtpg.tpg.gov.tw/og/image2.asp?f=0360310AKZ431
  653. #
  654. # Here is a brief translation:
  655. #
  656. # The Summer Time this year is adopted from midnight Apr 15 until Sep 20
  657. # midnight. To save (energy?) consumption, we're expanding Summer Time
  658. # adoption till Oct 31 midnight.
  659. #
  660. # The Central Weather Bureau website didn't mention that, however it can
  661. # be found from historical government announcement database.
  662. # From Paul Eggert (2014-07-03):
  663. # As per Yu-Cheng Chuang, say that Taiwan was at UT+9 from 1937-10-01
  664. # until 1945-09-21 at 01:00, overriding Shanks & Pottenger.
  665. # Likewise, use Yu-Cheng Chuang's data for DST in Taiwan.
  666. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  667. Rule Taiwan 1946 only - May 15 0:00 1:00 D
  668. Rule Taiwan 1946 only - Oct 1 0:00 0 S
  669. Rule Taiwan 1947 only - Apr 15 0:00 1:00 D
  670. Rule Taiwan 1947 only - Nov 1 0:00 0 S
  671. Rule Taiwan 1948 1951 - May 1 0:00 1:00 D
  672. Rule Taiwan 1948 1951 - Oct 1 0:00 0 S
  673. Rule Taiwan 1952 only - Mar 1 0:00 1:00 D
  674. Rule Taiwan 1952 1954 - Nov 1 0:00 0 S
  675. Rule Taiwan 1953 1959 - Apr 1 0:00 1:00 D
  676. Rule Taiwan 1955 1961 - Oct 1 0:00 0 S
  677. Rule Taiwan 1960 1961 - Jun 1 0:00 1:00 D
  678. Rule Taiwan 1974 1975 - Apr 1 0:00 1:00 D
  679. Rule Taiwan 1974 1975 - Oct 1 0:00 0 S
  680. Rule Taiwan 1979 only - Jul 1 0:00 1:00 D
  681. Rule Taiwan 1979 only - Oct 1 0:00 0 S
  682. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  683. # Taipei or Taibei or T'ai-pei
  684. Zone Asia/Taipei 8:06:00 - LMT 1896 Jan 1
  685. 8:00 - JWST 1937 Oct 1
  686. 9:00 - JST 1945 Sep 21 1:00
  687. 8:00 Taiwan C%sT
  688. # Macau (Macao, Aomen)
  689. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  690. Rule Macau 1961 1962 - Mar Sun>=16 3:30 1:00 S
  691. Rule Macau 1961 1964 - Nov Sun>=1 3:30 0 -
  692. Rule Macau 1963 only - Mar Sun>=16 0:00 1:00 S
  693. Rule Macau 1964 only - Mar Sun>=16 3:30 1:00 S
  694. Rule Macau 1965 only - Mar Sun>=16 0:00 1:00 S
  695. Rule Macau 1965 only - Oct 31 0:00 0 -
  696. Rule Macau 1966 1971 - Apr Sun>=16 3:30 1:00 S
  697. Rule Macau 1966 1971 - Oct Sun>=16 3:30 0 -
  698. Rule Macau 1972 1974 - Apr Sun>=15 0:00 1:00 S
  699. Rule Macau 1972 1973 - Oct Sun>=15 0:00 0 -
  700. Rule Macau 1974 1977 - Oct Sun>=15 3:30 0 -
  701. Rule Macau 1975 1977 - Apr Sun>=15 3:30 1:00 S
  702. Rule Macau 1978 1980 - Apr Sun>=15 0:00 1:00 S
  703. Rule Macau 1978 1980 - Oct Sun>=15 0:00 0 -
  704. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  705. Zone Asia/Macau 7:34:20 - LMT 1912 Jan 1
  706. 8:00 Macau MO%sT 1999 Dec 20 # return to China
  707. 8:00 PRC C%sT
  708. ###############################################################################
  709. # Cyprus
  710. #
  711. # Milne says the Eastern Telegraph Company used 2:14:00. Stick with LMT.
  712. #
  713. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  714. Rule Cyprus 1975 only - Apr 13 0:00 1:00 S
  715. Rule Cyprus 1975 only - Oct 12 0:00 0 -
  716. Rule Cyprus 1976 only - May 15 0:00 1:00 S
  717. Rule Cyprus 1976 only - Oct 11 0:00 0 -
  718. Rule Cyprus 1977 1980 - Apr Sun>=1 0:00 1:00 S
  719. Rule Cyprus 1977 only - Sep 25 0:00 0 -
  720. Rule Cyprus 1978 only - Oct 2 0:00 0 -
  721. Rule Cyprus 1979 1997 - Sep lastSun 0:00 0 -
  722. Rule Cyprus 1981 1998 - Mar lastSun 0:00 1:00 S
  723. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  724. Zone Asia/Nicosia 2:13:28 - LMT 1921 Nov 14
  725. 2:00 Cyprus EE%sT 1998 Sep
  726. 2:00 EUAsia EE%sT
  727. # IATA SSIM (1998-09) has Cyprus using EU rules for the first time.
  728. # Classically, Cyprus belongs to Asia; e.g. see Herodotus, Histories, I.72.
  729. # However, for various reasons many users expect to find it under Europe.
  730. Link Asia/Nicosia Europe/Nicosia
  731. # Georgia
  732. # From Paul Eggert (1994-11-19):
  733. # Today's _Economist_ (p 60) reports that Georgia moved its clocks forward
  734. # an hour recently, due to a law proposed by Zurab Murvanidze,
  735. # an MP who went on a hunger strike for 11 days to force discussion about it!
  736. # We have no details, but we'll guess they didn't move the clocks back in fall.
  737. #
  738. # From Mathew Englander, quoting AP (1996-10-23 13:05-04):
  739. # Instead of putting back clocks at the end of October, Georgia
  740. # will stay on daylight savings time this winter to save energy,
  741. # President Eduard Shevardnadze decreed Wednesday.
  742. #
  743. # From the BBC via Joseph S. Myers (2004-06-27):
  744. #
  745. # Georgia moved closer to Western Europe on Sunday... The former Soviet
  746. # republic has changed its time zone back to that of Moscow. As a result it
  747. # is now just four hours ahead of Greenwich Mean Time, rather than five hours
  748. # ahead. The switch was decreed by the pro-Western president of Georgia,
  749. # Mikheil Saakashvili, who said the change was partly prompted by the process
  750. # of integration into Europe.
  751. # From Teimuraz Abashidze (2005-11-07):
  752. # Government of Georgia ... decided to NOT CHANGE daylight savings time on
  753. # [Oct.] 30, as it was done before during last more than 10 years.
  754. # Currently, we are in fact GMT +4:00, as before 30 October it was GMT
  755. # +3:00.... The problem is, there is NO FORMAL LAW or governmental document
  756. # about it. As far as I can find, I was told, that there is no document,
  757. # because we just DIDN'T ISSUE document about switching to winter time....
  758. # I don't know what can be done, especially knowing that some years ago our
  759. # DST rules where changed THREE TIMES during one month.
  760. # Milne 1899 says Tbilisi (Tiflis) time was 2:59:05.7.
  761. # Byalokoz 1919 says Georgia was 2:59:11.
  762. # Go with Byalokoz.
  763. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  764. Zone Asia/Tbilisi 2:59:11 - LMT 1880
  765. 2:59:11 - TBMT 1924 May 2 # Tbilisi Mean Time
  766. 3:00 - TBIT 1957 Mar # Tbilisi Time
  767. 4:00 RussiaAsia TBI%sT 1991 Mar 31 2:00s
  768. 3:00 1:00 TBIST 1991 Apr 9 # independence
  769. 3:00 RussiaAsia GE%sT 1992 # Georgia Time
  770. 3:00 E-EurAsia GE%sT 1994 Sep lastSun
  771. 4:00 E-EurAsia GE%sT 1996 Oct lastSun
  772. 4:00 1:00 GEST 1997 Mar lastSun
  773. 4:00 E-EurAsia GE%sT 2004 Jun 27
  774. 3:00 RussiaAsia GE%sT 2005 Mar lastSun 2:00
  775. 4:00 - GET
  776. # East Timor
  777. # See Indonesia for the 1945 transition.
  778. # From João Carrascalão, brother of the former governor of East Timor, in
  779. # East Timor may be late for its millennium
  780. # <http://etan.org/et99c/december/26-31/30ETMAY.htm> (1999-12-26/31):
  781. # Portugal tried to change the time forward in 1974 because the sun
  782. # rises too early but the suggestion raised a lot of problems with the
  783. # Timorese and I still don't think it would work today because it
  784. # conflicts with their way of life.
  785. # From Paul Eggert (2000-12-04):
  786. # We don't have any record of the above attempt.
  787. # Most likely our records are incomplete, but we have no better data.
  788. # From Manoel de Almeida e Silva, Deputy Spokesman for the UN Secretary-General
  789. # http://www.hri.org/news/world/undh/2000/00-08-16.undh.html
  790. # (2000-08-16):
  791. # The Cabinet of the East Timor Transition Administration decided
  792. # today to advance East Timor's time by one hour. The time change,
  793. # which will be permanent, with no seasonal adjustment, will happen at
  794. # midnight on Saturday, September 16.
  795. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  796. Zone Asia/Dili 8:22:20 - LMT 1912 Jan 1
  797. 8:00 - TLT 1942 Feb 21 23:00 # E Timor Time
  798. 9:00 - JST 1945 Sep 23
  799. 9:00 - TLT 1976 May 3
  800. 8:00 - WITA 2000 Sep 17 0:00
  801. 9:00 - TLT
  802. # India
  803. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  804. Zone Asia/Kolkata 5:53:28 - LMT 1880 # Kolkata
  805. 5:53:20 - HMT 1941 Oct # Howrah Mean Time?
  806. 6:30 - BURT 1942 May 15 # Burma Time
  807. 5:30 - IST 1942 Sep
  808. 5:30 1:00 IST 1945 Oct 15
  809. 5:30 - IST
  810. # The following are like Asia/Kolkata:
  811. # Andaman Is
  812. # Lakshadweep (Laccadive, Minicoy and Amindivi Is)
  813. # Nicobar Is
  814. # Indonesia
  815. #
  816. # From Paul Eggert (2014-09-06):
  817. # The 1876 Report of the Secretary of the [US] Navy, p 306 says that Batavia
  818. # civil time was 7:07:12.5; round to even for Jakarta.
  819. #
  820. # From Gwillim Law (2001-05-28), overriding Shanks & Pottenger:
  821. # http://www.sumatera-inc.com/go_to_invest/about_indonesia.asp#standtime
  822. # says that Indonesia's time zones changed on 1988-01-01. Looking at some
  823. # time zone maps, I think that must refer to Western Borneo (Kalimantan Barat
  824. # and Kalimantan Tengah) switching from UTC+8 to UTC+7.
  825. #
  826. # From Paul Eggert (2007-03-10):
  827. # Here is another correction to Shanks & Pottenger.
  828. # JohnTWB writes that Japanese forces did not surrender control in
  829. # Indonesia until 1945-09-01 00:00 at the earliest (in Jakarta) and
  830. # other formal surrender ceremonies were September 9, 11, and 13, plus
  831. # September 12 for the regional surrender to Mountbatten in Singapore.
  832. # These would be the earliest possible times for a change.
  833. # Régimes horaires pour le monde entier, by Henri Le Corre, (Éditions
  834. # Traditionnelles, 1987, Paris) says that Java and Madura switched
  835. # from JST to UTC+07:30 on 1945-09-23, and gives 1944-09-01 for Jayapura
  836. # (Hollandia). For now, assume all Indonesian locations other than Jayapura
  837. # switched on 1945-09-23.
  838. #
  839. # From Paul Eggert (2013-08-11):
  840. # Normally the tz database uses English-language abbreviations, but in
  841. # Indonesia it's typical to use Indonesian-language abbreviations even
  842. # when writing in English. For example, see the English-language
  843. # summary published by the Time and Frequency Laboratory of the
  844. # Research Center for Calibration, Instrumentation and Metrology,
  845. # Indonesia, <http://time.kim.lipi.go.id/time-eng.php> (2006-09-29).
  846. # The abbreviations are:
  847. #
  848. # WIB - UTC+7 - Waktu Indonesia Barat (Indonesia western time)
  849. # WITA - UTC+8 - Waktu Indonesia Tengah (Indonesia central time)
  850. # WIT - UTC+9 - Waktu Indonesia Timur (Indonesia eastern time)
  851. #
  852. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  853. # Java, Sumatra
  854. Zone Asia/Jakarta 7:07:12 - LMT 1867 Aug 10
  855. # Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13,
  856. # but this must be a typo.
  857. 7:07:12 - BMT 1923 Dec 31 23:47:12 # Batavia
  858. 7:20 - JAVT 1932 Nov # Java Time
  859. 7:30 - WIB 1942 Mar 23
  860. 9:00 - JST 1945 Sep 23
  861. 7:30 - WIB 1948 May
  862. 8:00 - WIB 1950 May
  863. 7:30 - WIB 1964
  864. 7:00 - WIB
  865. # west and central Borneo
  866. Zone Asia/Pontianak 7:17:20 - LMT 1908 May
  867. 7:17:20 - PMT 1932 Nov # Pontianak MT
  868. 7:30 - WIB 1942 Jan 29
  869. 9:00 - JST 1945 Sep 23
  870. 7:30 - WIB 1948 May
  871. 8:00 - WIB 1950 May
  872. 7:30 - WIB 1964
  873. 8:00 - WITA 1988 Jan 1
  874. 7:00 - WIB
  875. # Sulawesi, Lesser Sundas, east and south Borneo
  876. Zone Asia/Makassar 7:57:36 - LMT 1920
  877. 7:57:36 - MMT 1932 Nov # Macassar MT
  878. 8:00 - WITA 1942 Feb 9
  879. 9:00 - JST 1945 Sep 23
  880. 8:00 - WITA
  881. # Maluku Islands, West Papua, Papua
  882. Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov
  883. 9:00 - WIT 1944 Sep 1
  884. 9:30 - ACST 1964
  885. 9:00 - WIT
  886. # Iran
  887. # From Roozbeh Pournader (2003-03-15):
  888. # This is an English translation of what I just found (originally in Persian).
  889. # The Gregorian dates in brackets are mine:
  890. #
  891. # Official Newspaper No. 13548-1370/6/25 [1991-09-16]
  892. # No. 16760/T233 H 1370/6/10 [1991-09-01]
  893. #
  894. # The Rule About Change of the Official Time of the Country
  895. #
  896. # The Board of Ministers, in the meeting dated 1370/5/23 [1991-08-14],
  897. # based on the suggestion number 2221/D dated 1370/4/22 [1991-07-13]
  898. # of the Country's Organization for Official and Employment Affairs,
  899. # and referring to the law for equating the working hours of workers
  900. # and officers in the whole country dated 1359/4/23 [1980-07-14], and
  901. # for synchronizing the official times of the country, agreed that:
  902. #
  903. # The official time of the country will should move forward one hour
  904. # at the 24[:00] hours of the first day of Farvardin and should return
  905. # to its previous state at the 24[:00] hours of the 30th day of
  906. # Shahrivar.
  907. #
  908. # First Deputy to the President - Hassan Habibi
  909. #
  910. # From personal experience, that agrees with what has been followed
  911. # for at least the last 5 years. Before that, for a few years, the
  912. # date used was the first Thursday night of Farvardin and the last
  913. # Thursday night of Shahrivar, but I can't give exact dates....
  914. # I have also changed the abbreviations to what is considered correct
  915. # here in Iran, IRST for regular time and IRDT for daylight saving time.
  916. #
  917. # From Roozbeh Pournader (2005-04-05):
  918. # The text of the Iranian law, in effect since 1925, clearly mentions
  919. # that the true solar year is the measure, and there is no arithmetic
  920. # leap year calculation involved. There has never been any serious
  921. # plan to change that law....
  922. #
  923. # From Paul Eggert (2006-03-22):
  924. # Go with Shanks & Pottenger before Sept. 1991, and with Pournader thereafter.
  925. # I used Ed Reingold's cal-persia in GNU Emacs 21.2 to check Persian dates,
  926. # stopping after 2037 when 32-bit time_t's overflow.
  927. # That cal-persia used Birashk's approximation, which disagrees with the solar
  928. # calendar predictions for the year 2025, so I corrected those dates by hand.
  929. #
  930. # From Oscar van Vlijmen (2005-03-30), writing about future
  931. # discrepancies between cal-persia and the Iranian calendar:
  932. # For 2091 solar-longitude-after yields 2091-03-20 08:40:07.7 UT for
  933. # the vernal equinox and that gets so close to 12:00 some local
  934. # Iranian time that the definition of the correct location needs to be
  935. # known exactly, amongst other factors. 2157 is even closer:
  936. # 2157-03-20 08:37:15.5 UT. But the Gregorian year 2025 should give
  937. # no interpretation problem whatsoever. By the way, another instant
  938. # in the near future where there will be a discrepancy between
  939. # arithmetical and astronomical Iranian calendars will be in 2058:
  940. # vernal equinox on 2058-03-20 09:03:05.9 UT. The Java version of
  941. # Reingold's/Dershowitz' calculator gives correctly the Gregorian date
  942. # 2058-03-21 for 1 Farvardin 1437 (astronomical).
  943. #
  944. # From Steffen Thorsen (2006-03-22):
  945. # Several of my users have reported that Iran will not observe DST anymore:
  946. # http://www.irna.ir/en/news/view/line-17/0603193812164948.htm
  947. #
  948. # From Reuters (2007-09-16), with a heads-up from Jesper Nørgaard Welen:
  949. # ... the Guardian Council ... approved a law on Sunday to re-introduce
  950. # daylight saving time ...
  951. # http://uk.reuters.com/article/oilRpt/idUKBLA65048420070916
  952. #
  953. # From Roozbeh Pournader (2007-11-05):
  954. # This is quoted from Official Gazette of the Islamic Republic of
  955. # Iran, Volume 63, No. 18242, dated Tuesday 1386/6/24
  956. # [2007-10-16]. I am doing the best translation I can:...
  957. # The official time of the country will be moved forward for one hour
  958. # on the 24 hours of the first day of the month of Farvardin and will
  959. # be changed back to its previous state on the 24 hours of the
  960. # thirtieth day of Shahrivar.
  961. #
  962. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  963. Rule Iran 1978 1980 - Mar 21 0:00 1:00 D
  964. Rule Iran 1978 only - Oct 21 0:00 0 S
  965. Rule Iran 1979 only - Sep 19 0:00 0 S
  966. Rule Iran 1980 only - Sep 23 0:00 0 S
  967. Rule Iran 1991 only - May 3 0:00 1:00 D
  968. Rule Iran 1992 1995 - Mar 22 0:00 1:00 D
  969. Rule Iran 1991 1995 - Sep 22 0:00 0 S
  970. Rule Iran 1996 only - Mar 21 0:00 1:00 D
  971. Rule Iran 1996 only - Sep 21 0:00 0 S
  972. Rule Iran 1997 1999 - Mar 22 0:00 1:00 D
  973. Rule Iran 1997 1999 - Sep 22 0:00 0 S
  974. Rule Iran 2000 only - Mar 21 0:00 1:00 D
  975. Rule Iran 2000 only - Sep 21 0:00 0 S
  976. Rule Iran 2001 2003 - Mar 22 0:00 1:00 D
  977. Rule Iran 2001 2003 - Sep 22 0:00 0 S
  978. Rule Iran 2004 only - Mar 21 0:00 1:00 D
  979. Rule Iran 2004 only - Sep 21 0:00 0 S
  980. Rule Iran 2005 only - Mar 22 0:00 1:00 D
  981. Rule Iran 2005 only - Sep 22 0:00 0 S
  982. Rule Iran 2008 only - Mar 21 0:00 1:00 D
  983. Rule Iran 2008 only - Sep 21 0:00 0 S
  984. Rule Iran 2009 2011 - Mar 22 0:00 1:00 D
  985. Rule Iran 2009 2011 - Sep 22 0:00 0 S
  986. Rule Iran 2012 only - Mar 21 0:00 1:00 D
  987. Rule Iran 2012 only - Sep 21 0:00 0 S
  988. Rule Iran 2013 2015 - Mar 22 0:00 1:00 D
  989. Rule Iran 2013 2015 - Sep 22 0:00 0 S
  990. Rule Iran 2016 only - Mar 21 0:00 1:00 D
  991. Rule Iran 2016 only - Sep 21 0:00 0 S
  992. Rule Iran 2017 2019 - Mar 22 0:00 1:00 D
  993. Rule Iran 2017 2019 - Sep 22 0:00 0 S
  994. Rule Iran 2020 only - Mar 21 0:00 1:00 D
  995. Rule Iran 2020 only - Sep 21 0:00 0 S
  996. Rule Iran 2021 2023 - Mar 22 0:00 1:00 D
  997. Rule Iran 2021 2023 - Sep 22 0:00 0 S
  998. Rule Iran 2024 only - Mar 21 0:00 1:00 D
  999. Rule Iran 2024 only - Sep 21 0:00 0 S
  1000. Rule Iran 2025 2027 - Mar 22 0:00 1:00 D
  1001. Rule Iran 2025 2027 - Sep 22 0:00 0 S
  1002. Rule Iran 2028 2029 - Mar 21 0:00 1:00 D
  1003. Rule Iran 2028 2029 - Sep 21 0:00 0 S
  1004. Rule Iran 2030 2031 - Mar 22 0:00 1:00 D
  1005. Rule Iran 2030 2031 - Sep 22 0:00 0 S
  1006. Rule Iran 2032 2033 - Mar 21 0:00 1:00 D
  1007. Rule Iran 2032 2033 - Sep 21 0:00 0 S
  1008. Rule Iran 2034 2035 - Mar 22 0:00 1:00 D
  1009. Rule Iran 2034 2035 - Sep 22 0:00 0 S
  1010. Rule Iran 2036 2037 - Mar 21 0:00 1:00 D
  1011. Rule Iran 2036 2037 - Sep 21 0:00 0 S
  1012. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1013. Zone Asia/Tehran 3:25:44 - LMT 1916
  1014. 3:25:44 - TMT 1946 # Tehran Mean Time
  1015. 3:30 - IRST 1977 Nov
  1016. 4:00 Iran IR%sT 1979
  1017. 3:30 Iran IR%sT
  1018. # Iraq
  1019. #
  1020. # From Jonathan Lennox (2000-06-12):
  1021. # An article in this week's Economist ("Inside the Saddam-free zone", p. 50 in
  1022. # the U.S. edition) on the Iraqi Kurds contains a paragraph:
  1023. # "The three northern provinces ... switched their clocks this spring and
  1024. # are an hour ahead of Baghdad."
  1025. #
  1026. # But Rives McDow (2000-06-18) quotes a contact in Iraqi-Kurdistan as follows:
  1027. # In the past, some Kurdish nationalists, as a protest to the Iraqi
  1028. # Government, did not adhere to daylight saving time. They referred
  1029. # to daylight saving as Saddam time. But, as of today, the time zone
  1030. # in Iraqi-Kurdistan is on standard time with Baghdad, Iraq.
  1031. #
  1032. # So we'll ignore the Economist's claim.
  1033. # From Steffen Thorsen (2008-03-10):
  1034. # The cabinet in Iraq abolished DST last week, according to the following
  1035. # news sources (in Arabic):
  1036. # http://www.aljeeran.net/wesima_articles/news-20080305-98602.html
  1037. # http://www.aswataliraq.info/look/article.tpl?id=2047&IdLanguage=17&IdPublication=4&NrArticle=71743&NrIssue=1&NrSection=10
  1038. #
  1039. # We have published a short article in English about the change:
  1040. # http://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html
  1041. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1042. Rule Iraq 1982 only - May 1 0:00 1:00 D
  1043. Rule Iraq 1982 1984 - Oct 1 0:00 0 S
  1044. Rule Iraq 1983 only - Mar 31 0:00 1:00 D
  1045. Rule Iraq 1984 1985 - Apr 1 0:00 1:00 D
  1046. Rule Iraq 1985 1990 - Sep lastSun 1:00s 0 S
  1047. Rule Iraq 1986 1990 - Mar lastSun 1:00s 1:00 D
  1048. # IATA SSIM (1991/1996) says Apr 1 12:01am UTC; guess the ':01' is a typo.
  1049. # Shanks & Pottenger say Iraq did not observe DST 1992/1997; ignore this.
  1050. #
  1051. Rule Iraq 1991 2007 - Apr 1 3:00s 1:00 D
  1052. Rule Iraq 1991 2007 - Oct 1 3:00s 0 S
  1053. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1054. Zone Asia/Baghdad 2:57:40 - LMT 1890
  1055. 2:57:36 - BMT 1918 # Baghdad Mean Time?
  1056. 3:00 - AST 1982 May
  1057. 3:00 Iraq A%sT
  1058. ###############################################################################
  1059. # Israel
  1060. # From Ephraim Silverberg (2001-01-11):
  1061. #
  1062. # I coined "IST/IDT" circa 1988. Until then there were three
  1063. # different abbreviations in use:
  1064. #
  1065. # JST Jerusalem Standard Time [Danny Braniss, Hebrew University]
  1066. # IZT Israel Zonal (sic) Time [Prof. Haim Papo, Technion]
  1067. # EEST Eastern Europe Standard Time [used by almost everyone else]
  1068. #
  1069. # Since timezones should be called by country and not capital cities,
  1070. # I ruled out JST. As Israel is in Asia Minor and not Eastern Europe,
  1071. # EEST was equally unacceptable. Since "zonal" was not compatible with
  1072. # any other timezone abbreviation, I felt that 'IST' was the way to go
  1073. # and, indeed, it has received almost universal acceptance in timezone
  1074. # settings in Israeli computers.
  1075. #
  1076. # In any case, I am happy to share timezone abbreviations with India,
  1077. # high on my favorite-country list (and not only because my wife's
  1078. # family is from India).
  1079. # From Shanks & Pottenger:
  1080. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1081. Rule Zion 1940 only - Jun 1 0:00 1:00 D
  1082. Rule Zion 1942 1944 - Nov 1 0:00 0 S
  1083. Rule Zion 1943 only - Apr 1 2:00 1:00 D
  1084. Rule Zion 1944 only - Apr 1 0:00 1:00 D
  1085. Rule Zion 1945 only - Apr 16 0:00 1:00 D
  1086. Rule Zion 1945 only - Nov 1 2:00 0 S
  1087. Rule Zion 1946 only - Apr 16 2:00 1:00 D
  1088. Rule Zion 1946 only - Nov 1 0:00 0 S
  1089. Rule Zion 1948 only - May 23 0:00 2:00 DD
  1090. Rule Zion 1948 only - Sep 1 0:00 1:00 D
  1091. Rule Zion 1948 1949 - Nov 1 2:00 0 S
  1092. Rule Zion 1949 only - May 1 0:00 1:00 D
  1093. Rule Zion 1950 only - Apr 16 0:00 1:00 D
  1094. Rule Zion 1950 only - Sep 15 3:00 0 S
  1095. Rule Zion 1951 only - Apr 1 0:00 1:00 D
  1096. Rule Zion 1951 only - Nov 11 3:00 0 S
  1097. Rule Zion 1952 only - Apr 20 2:00 1:00 D
  1098. Rule Zion 1952 only - Oct 19 3:00 0 S
  1099. Rule Zion 1953 only - Apr 12 2:00 1:00 D
  1100. Rule Zion 1953 only - Sep 13 3:00 0 S
  1101. Rule Zion 1954 only - Jun 13 0:00 1:00 D
  1102. Rule Zion 1954 only - Sep 12 0:00 0 S
  1103. Rule Zion 1955 only - Jun 11 2:00 1:00 D
  1104. Rule Zion 1955 only - Sep 11 0:00 0 S
  1105. Rule Zion 1956 only - Jun 3 0:00 1:00 D
  1106. Rule Zion 1956 only - Sep 30 3:00 0 S
  1107. Rule Zion 1957 only - Apr 29 2:00 1:00 D
  1108. Rule Zion 1957 only - Sep 22 0:00 0 S
  1109. Rule Zion 1974 only - Jul 7 0:00 1:00 D
  1110. Rule Zion 1974 only - Oct 13 0:00 0 S
  1111. Rule Zion 1975 only - Apr 20 0:00 1:00 D
  1112. Rule Zion 1975 only - Aug 31 0:00 0 S
  1113. Rule Zion 1985 only - Apr 14 0:00 1:00 D
  1114. Rule Zion 1985 only - Sep 15 0:00 0 S
  1115. Rule Zion 1986 only - May 18 0:00 1:00 D
  1116. Rule Zion 1986 only - Sep 7 0:00 0 S
  1117. Rule Zion 1987 only - Apr 15 0:00 1:00 D
  1118. Rule Zion 1987 only - Sep 13 0:00 0 S
  1119. # From Avigdor Finkelstein (2014-03-05):
  1120. # I check the Parliament (Knesset) records and there it's stated that the
  1121. # [1988] transition should take place on Saturday night, when the Sabbath
  1122. # ends and changes to Sunday.
  1123. Rule Zion 1988 only - Apr 10 0:00 1:00 D
  1124. Rule Zion 1988 only - Sep 4 0:00 0 S
  1125. # From Ephraim Silverberg
  1126. # (1997-03-04, 1998-03-16, 1998-12-28, 2000-01-17, 2000-07-25, 2004-12-22,
  1127. # and 2005-02-17):
  1128. # According to the Office of the Secretary General of the Ministry of
  1129. # Interior, there is NO set rule for Daylight-Savings/Standard time changes.
  1130. # One thing is entrenched in law, however: that there must be at least 150
  1131. # days of daylight savings time annually. From 1993-1998, the change to
  1132. # daylight savings time was on a Friday morning from midnight IST to
  1133. # 1 a.m IDT; up until 1998, the change back to standard time was on a
  1134. # Saturday night from midnight daylight savings time to 11 p.m. standard
  1135. # time. 1996 is an exception to this rule where the change back to standard
  1136. # time took place on Sunday night instead of Saturday night to avoid
  1137. # conflicts with the Jewish New Year. In 1999, the change to
  1138. # daylight savings time was still on a Friday morning but from
  1139. # 2 a.m. IST to 3 a.m. IDT; furthermore, the change back to standard time
  1140. # was also on a Friday morning from 2 a.m. IDT to 1 a.m. IST for
  1141. # 1999 only. In the year 2000, the change to daylight savings time was
  1142. # similar to 1999, but although the change back will be on a Friday, it
  1143. # will take place from 1 a.m. IDT to midnight IST. Starting in 2001, all
  1144. # changes to/from will take place at 1 a.m. old time, but now there is no
  1145. # rule as to what day of the week it will take place in as the start date
  1146. # (except in 2003) is the night after the Passover Seder (i.e. the eve
  1147. # of the 16th of Nisan in the lunar Hebrew calendar) and the end date
  1148. # (except in 2002) is three nights before Yom Kippur [Day of Atonement]
  1149. # (the eve of the 7th of Tishrei in the lunar Hebrew calendar).
  1150. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1151. Rule Zion 1989 only - Apr 30 0:00 1:00 D
  1152. Rule Zion 1989 only - Sep 3 0:00 0 S
  1153. Rule Zion 1990 only - Mar 25 0:00 1:00 D
  1154. Rule Zion 1990 only - Aug 26 0:00 0 S
  1155. Rule Zion 1991 only - Mar 24 0:00 1:00 D
  1156. Rule Zion 1991 only - Sep 1 0:00 0 S
  1157. Rule Zion 1992 only - Mar 29 0:00 1:00 D
  1158. Rule Zion 1992 only - Sep 6 0:00 0 S
  1159. Rule Zion 1993 only - Apr 2 0:00 1:00 D
  1160. Rule Zion 1993 only - Sep 5 0:00 0 S
  1161. # The dates for 1994-1995 were obtained from Office of the Spokeswoman for the
  1162. # Ministry of Interior, Jerusalem, Israel. The spokeswoman can be reached by
  1163. # calling the office directly at 972-2-6701447 or 972-2-6701448.
  1164. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1165. Rule Zion 1994 only - Apr 1 0:00 1:00 D
  1166. Rule Zion 1994 only - Aug 28 0:00 0 S
  1167. Rule Zion 1995 only - Mar 31 0:00 1:00 D
  1168. Rule Zion 1995 only - Sep 3 0:00 0 S
  1169. # The dates for 1996 were determined by the Minister of Interior of the
  1170. # time, Haim Ramon. The official announcement regarding 1996-1998
  1171. # (with the dates for 1997-1998 no longer being relevant) can be viewed at:
  1172. #
  1173. # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/1996-1998.ramon.ps.gz
  1174. #
  1175. # The dates for 1997-1998 were altered by his successor, Rabbi Eli Suissa.
  1176. #
  1177. # The official announcements for the years 1997-1999 can be viewed at:
  1178. #
  1179. # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/YYYY.ps.gz
  1180. #
  1181. # where YYYY is the relevant year.
  1182. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1183. Rule Zion 1996 only - Mar 15 0:00 1:00 D
  1184. Rule Zion 1996 only - Sep 16 0:00 0 S
  1185. Rule Zion 1997 only - Mar 21 0:00 1:00 D
  1186. Rule Zion 1997 only - Sep 14 0:00 0 S
  1187. Rule Zion 1998 only - Mar 20 0:00 1:00 D
  1188. Rule Zion 1998 only - Sep 6 0:00 0 S
  1189. Rule Zion 1999 only - Apr 2 2:00 1:00 D
  1190. Rule Zion 1999 only - Sep 3 2:00 0 S
  1191. # The Knesset Interior Committee has changed the dates for 2000 for
  1192. # the third time in just over a year and have set new dates for the
  1193. # years 2001-2004 as well.
  1194. #
  1195. # The official announcement for the start date of 2000 can be viewed at:
  1196. #
  1197. # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2000-start.ps.gz
  1198. #
  1199. # The official announcement for the end date of 2000 and the dates
  1200. # for the years 2001-2004 can be viewed at:
  1201. #
  1202. # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2000-2004.ps.gz
  1203. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1204. Rule Zion 2000 only - Apr 14 2:00 1:00 D
  1205. Rule Zion 2000 only - Oct 6 1:00 0 S
  1206. Rule Zion 2001 only - Apr 9 1:00 1:00 D
  1207. Rule Zion 2001 only - Sep 24 1:00 0 S
  1208. Rule Zion 2002 only - Mar 29 1:00 1:00 D
  1209. Rule Zion 2002 only - Oct 7 1:00 0 S
  1210. Rule Zion 2003 only - Mar 28 1:00 1:00 D
  1211. Rule Zion 2003 only - Oct 3 1:00 0 S
  1212. Rule Zion 2004 only - Apr 7 1:00 1:00 D
  1213. Rule Zion 2004 only - Sep 22 1:00 0 S
  1214. # The proposed law agreed upon by the Knesset Interior Committee on
  1215. # 2005-02-14 is that, for 2005 and beyond, DST starts at 02:00 the
  1216. # last Friday before April 2nd (i.e. the last Friday in March or April
  1217. # 1st itself if it falls on a Friday) and ends at 02:00 on the Saturday
  1218. # night _before_ the fast of Yom Kippur.
  1219. #
  1220. # Those who can read Hebrew can view the announcement at:
  1221. #
  1222. # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2005+beyond.ps
  1223. # From Paul Eggert (2012-10-26):
  1224. # I used Ephraim Silverberg's dst-israel.el program
  1225. # <ftp://ftp.cs.huji.ac.il/pub/tz/software/dst-israel.el> (2005-02-20)
  1226. # along with Ed Reingold's cal-hebrew in GNU Emacs 21.4,
  1227. # to generate the transitions from 2005 through 2012.
  1228. # (I replaced "lastFri" with "Fri>=26" by hand.)
  1229. # The spring transitions all correspond to the following Rule:
  1230. #
  1231. # Rule Zion 2005 2012 - Mar Fri>=26 2:00 1:00 D
  1232. #
  1233. # but older zic implementations (e.g., Solaris 8) do not support
  1234. # "Fri>=26" to mean April 1 in years like 2005, so for now we list the
  1235. # springtime transitions explicitly.
  1236. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1237. Rule Zion 2005 only - Apr 1 2:00 1:00 D
  1238. Rule Zion 2005 only - Oct 9 2:00 0 S
  1239. Rule Zion 2006 2010 - Mar Fri>=26 2:00 1:00 D
  1240. Rule Zion 2006 only - Oct 1 2:00 0 S
  1241. Rule Zion 2007 only - Sep 16 2:00 0 S
  1242. Rule Zion 2008 only - Oct 5 2:00 0 S
  1243. Rule Zion 2009 only - Sep 27 2:00 0 S
  1244. Rule Zion 2010 only - Sep 12 2:00 0 S
  1245. Rule Zion 2011 only - Apr 1 2:00 1:00 D
  1246. Rule Zion 2011 only - Oct 2 2:00 0 S
  1247. Rule Zion 2012 only - Mar Fri>=26 2:00 1:00 D
  1248. Rule Zion 2012 only - Sep 23 2:00 0 S
  1249. # From Ephraim Silverberg (2013-06-27):
  1250. # On June 23, 2013, the Israeli government approved changes to the
  1251. # Time Decree Law. The next day, the changes passed the First Reading
  1252. # in the Knesset. The law is expected to pass the Second and Third
  1253. # (final) Readings by the beginning of September 2013.
  1254. #
  1255. # As of 2013, DST starts at 02:00 on the Friday before the last Sunday
  1256. # in March. DST ends at 02:00 on the last Sunday of October.
  1257. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1258. Rule Zion 2013 max - Mar Fri>=23 2:00 1:00 D
  1259. Rule Zion 2013 max - Oct lastSun 2:00 0 S
  1260. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1261. Zone Asia/Jerusalem 2:20:54 - LMT 1880
  1262. 2:20:40 - JMT 1918 # Jerusalem Mean Time?
  1263. 2:00 Zion I%sT
  1264. ###############################################################################
  1265. # Japan
  1266. # '9:00' and 'JST' is from Guy Harris.
  1267. # From Paul Eggert (1995-03-06):
  1268. # Today's _Asahi Evening News_ (page 4) reports that Japan had
  1269. # daylight saving between 1948 and 1951, but "the system was discontinued
  1270. # because the public believed it would lead to longer working hours."
  1271. # From Mayumi Negishi in the 2005-08-10 Japan Times:
  1272. # http://www.japantimes.co.jp/cgi-bin/getarticle.pl5?nn20050810f2.htm
  1273. # Occupation authorities imposed daylight-saving time on Japan on
  1274. # [1948-05-01].... But lack of prior debate and the execution of
  1275. # daylight-saving time just three days after the bill was passed generated
  1276. # deep hatred of the concept.... The Diet unceremoniously passed a bill to
  1277. # dump the unpopular system in October 1951, less than a month after the San
  1278. # Francisco Peace Treaty was signed. (A government poll in 1951 showed 53%
  1279. # of the Japanese wanted to scrap daylight-saving time, as opposed to 30% who
  1280. # wanted to keep it.)
  1281. # From Paul Eggert (2006-03-22):
  1282. # Shanks & Pottenger write that DST in Japan during those years was as follows:
  1283. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1284. Rule Japan 1948 only - May Sun>=1 2:00 1:00 D
  1285. Rule Japan 1948 1951 - Sep Sat>=8 2:00 0 S
  1286. Rule Japan 1949 only - Apr Sun>=1 2:00 1:00 D
  1287. Rule Japan 1950 1951 - May Sun>=1 2:00 1:00 D
  1288. # but the only locations using it (for birth certificates, presumably, since
  1289. # their audience is astrologers) were US military bases. For now, assume
  1290. # that for most purposes daylight-saving time was observed; otherwise, what
  1291. # would have been the point of the 1951 poll?
  1292. # From Hideyuki Suzuki (1998-11-09):
  1293. # 'Tokyo' usually stands for the former location of Tokyo Astronomical
  1294. # Observatory: 139 degrees 44' 40.90" E (9h 18m 58.727s),
  1295. # 35 degrees 39' 16.0" N.
  1296. # This data is from 'Rika Nenpyou (Chronological Scientific Tables) 1996'
  1297. # edited by National Astronomical Observatory of Japan....
  1298. # JST (Japan Standard Time) has been used since 1888-01-01 00:00 (JST).
  1299. # The law is enacted on 1886-07-07.
  1300. # From Hideyuki Suzuki (1998-11-16):
  1301. # The ordinance No. 51 (1886) established "standard time" in Japan,
  1302. # which stands for the time on 135 degrees E.
  1303. # In the ordinance No. 167 (1895), "standard time" was renamed to "central
  1304. # standard time". And the same ordinance also established "western standard
  1305. # time", which stands for the time on 120 degrees E.... But "western standard
  1306. # time" was abolished in the ordinance No. 529 (1937). In the ordinance No.
  1307. # 167, there is no mention regarding for what place western standard time is
  1308. # standard....
  1309. #
  1310. # I wrote "ordinance" above, but I don't know how to translate.
  1311. # In Japanese it's "chokurei", which means ordinance from emperor.
  1312. # From Yu-Cheng Chuang (2013-07-12):
  1313. # ...the Meiji Emperor announced Ordinance No. 167 of Meiji Year 28 "The clause
  1314. # about standard time" ... The adoption began from Jan 1, 1896.
  1315. # http://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時)
  1316. #
  1317. # ...the Showa Emperor announced Ordinance No. 529 of Showa Year 12 ... which
  1318. # means the whole Japan territory, including later occupations, adopt Japan
  1319. # Central Time (UTC+9). The adoption began on Oct 1, 1937.
  1320. # http://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件
  1321. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1322. Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u
  1323. 9:00 - JST 1896 Jan 1
  1324. 9:00 - JCST 1937 Oct 1
  1325. 9:00 Japan J%sT
  1326. # Since 1938, all Japanese possessions have been like Asia/Tokyo.
  1327. # Jordan
  1328. #
  1329. # From <http://star.arabia.com/990701/JO9.html>
  1330. # Jordan Week (1999-07-01) via Steffen Thorsen (1999-09-09):
  1331. # Clocks in Jordan were forwarded one hour on Wednesday at midnight,
  1332. # in accordance with the government's decision to implement summer time
  1333. # all year round.
  1334. #
  1335. # From <http://star.arabia.com/990930/JO9.html>
  1336. # Jordan Week (1999-09-30) via Steffen Thorsen (1999-11-09):
  1337. # Winter time starts today Thursday, 30 September. Clocks will be turned back
  1338. # by one hour. This is the latest government decision and it's final!
  1339. # The decision was taken because of the increase in working hours in
  1340. # government's departments from six to seven hours.
  1341. #
  1342. # From Paul Eggert (2005-11-22):
  1343. # Starting 2003 transitions are from Steffen Thorsen's web site timeanddate.com.
  1344. #
  1345. # From Steffen Thorsen (2005-11-23):
  1346. # For Jordan I have received multiple independent user reports every year
  1347. # about DST end dates, as the end-rule is different every year.
  1348. #
  1349. # From Steffen Thorsen (2006-10-01), after a heads-up from Hilal Malawi:
  1350. # http://www.petranews.gov.jo/nepras/2006/Sep/05/4000.htm
  1351. # "Jordan will switch to winter time on Friday, October 27".
  1352. #
  1353. # From Steffen Thorsen (2009-04-02):
  1354. # This single one might be good enough, (2009-03-24, Arabic):
  1355. # http://petra.gov.jo/Artical.aspx?Lng=2&Section=8&Artical=95279
  1356. #
  1357. # Google's translation:
  1358. #
  1359. # > The Council of Ministers decided in 2002 to adopt the principle of timely
  1360. # > submission of the summer at 60 minutes as of midnight on the last Thursday
  1361. # > of the month of March of each year.
  1362. #
  1363. # So - this means the midnight between Thursday and Friday since 2002.
  1364. # From Arthur David Olson (2009-04-06):
  1365. # We still have Jordan switching to DST on Thursdays in 2000 and 2001.
  1366. # From Steffen Thorsen (2012-10-25):
  1367. # Yesterday the government in Jordan announced that they will not
  1368. # switch back to standard time this winter, so the will stay on DST
  1369. # until about the same time next year (at least).
  1370. # http://www.petra.gov.jo/Public_News/Nws_NewsDetails.aspx?NewsID=88950
  1371. # From Steffen Thorsen (2013-12-11):
  1372. # Jordan Times and other sources say that Jordan is going back to
  1373. # UTC+2 on 2013-12-19 at midnight:
  1374. # http://jordantimes.com/govt-decides-to-switch-back-to-wintertime
  1375. # Official, in Arabic:
  1376. # http://www.petra.gov.jo/public_news/Nws_NewsDetails.aspx?Menu_ID=&Site_Id=2&lang=1&NewsID=133230&CatID=14
  1377. # ... Our background/permalink about it
  1378. # http://www.timeanddate.com/news/time/jordan-reverses-dst-decision.html
  1379. # ...
  1380. # http://www.petra.gov.jo/Public_News/Nws_NewsDetails.aspx?lang=2&site_id=1&NewsID=133313&Type=P
  1381. # ... says midnight for the coming one and 1:00 for the ones in the future
  1382. # (and they will use DST again next year, using the normal schedule).
  1383. # From Paul Eggert (2013-12-11):
  1384. # As Steffen suggested, consider the past 21-month experiment to be DST.
  1385. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1386. Rule Jordan 1973 only - Jun 6 0:00 1:00 S
  1387. Rule Jordan 1973 1975 - Oct 1 0:00 0 -
  1388. Rule Jordan 1974 1977 - May 1 0:00 1:00 S
  1389. Rule Jordan 1976 only - Nov 1 0:00 0 -
  1390. Rule Jordan 1977 only - Oct 1 0:00 0 -
  1391. Rule Jordan 1978 only - Apr 30 0:00 1:00 S
  1392. Rule Jordan 1978 only - Sep 30 0:00 0 -
  1393. Rule Jordan 1985 only - Apr 1 0:00 1:00 S
  1394. Rule Jordan 1985 only - Oct 1 0:00 0 -
  1395. Rule Jordan 1986 1988 - Apr Fri>=1 0:00 1:00 S
  1396. Rule Jordan 1986 1990 - Oct Fri>=1 0:00 0 -
  1397. Rule Jordan 1989 only - May 8 0:00 1:00 S
  1398. Rule Jordan 1990 only - Apr 27 0:00 1:00 S
  1399. Rule Jordan 1991 only - Apr 17 0:00 1:00 S
  1400. Rule Jordan 1991 only - Sep 27 0:00 0 -
  1401. Rule Jordan 1992 only - Apr 10 0:00 1:00 S
  1402. Rule Jordan 1992 1993 - Oct Fri>=1 0:00 0 -
  1403. Rule Jordan 1993 1998 - Apr Fri>=1 0:00 1:00 S
  1404. Rule Jordan 1994 only - Sep Fri>=15 0:00 0 -
  1405. Rule Jordan 1995 1998 - Sep Fri>=15 0:00s 0 -
  1406. Rule Jordan 1999 only - Jul 1 0:00s 1:00 S
  1407. Rule Jordan 1999 2002 - Sep lastFri 0:00s 0 -
  1408. Rule Jordan 2000 2001 - Mar lastThu 0:00s 1:00 S
  1409. Rule Jordan 2002 2012 - Mar lastThu 24:00 1:00 S
  1410. Rule Jordan 2003 only - Oct 24 0:00s 0 -
  1411. Rule Jordan 2004 only - Oct 15 0:00s 0 -
  1412. Rule Jordan 2005 only - Sep lastFri 0:00s 0 -
  1413. Rule Jordan 2006 2011 - Oct lastFri 0:00s 0 -
  1414. Rule Jordan 2013 only - Dec 20 0:00 0 -
  1415. Rule Jordan 2014 max - Mar lastThu 24:00 1:00 S
  1416. Rule Jordan 2014 max - Oct lastFri 0:00s 0 -
  1417. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1418. Zone Asia/Amman 2:23:44 - LMT 1931
  1419. 2:00 Jordan EE%sT
  1420. # Kazakhstan
  1421. # From Paul Eggert (1996-11-22):
  1422. # Andrew Evtichov (1996-04-13) writes that Kazakhstan
  1423. # stayed in sync with Moscow after 1990, and that Aqtobe (formerly Aktyubinsk)
  1424. # and Aqtau (formerly Shevchenko) are the largest cities in their zones.
  1425. # Guess that Aqtau and Aqtobe diverged in 1995, since that's the first time
  1426. # IATA SSIM mentions a third time zone in Kazakhstan.
  1427. # From Paul Eggert (2006-03-22):
  1428. # German Iofis, ELSI, Almaty (2001-10-09) reports that Kazakhstan uses
  1429. # RussiaAsia rules, instead of switching at 00:00 as the IATA has it.
  1430. # Go with Shanks & Pottenger, who have them always using RussiaAsia rules.
  1431. # Also go with the following claims of Shanks & Pottenger:
  1432. #
  1433. # - Kazakhstan did not observe DST in 1991.
  1434. # - Qyzylorda switched from +5:00 to +6:00 on 1992-01-19 02:00.
  1435. # - Oral switched from +5:00 to +4:00 in spring 1989.
  1436. # From Kazakhstan Embassy's News Bulletin No. 11
  1437. # <http://www.kazsociety.org.uk/news/2005/03/30.htm> (2005-03-21):
  1438. # The Government of Kazakhstan passed a resolution March 15 abolishing
  1439. # daylight saving time citing lack of economic benefits and health
  1440. # complications coupled with a decrease in productivity.
  1441. #
  1442. # From Branislav Kojic (in Astana) via Gwillim Law (2005-06-28):
  1443. # ... what happened was that the former Kazakhstan Eastern time zone
  1444. # was "blended" with the Central zone. Therefore, Kazakhstan now has
  1445. # two time zones, and difference between them is one hour. The zone
  1446. # closer to UTC is the former Western zone (probably still called the
  1447. # same), encompassing four provinces in the west: Aqtobe, Atyrau,
  1448. # Mangghystau, and West Kazakhstan. The other zone encompasses
  1449. # everything else.... I guess that would make Kazakhstan time zones
  1450. # de jure UTC+5 and UTC+6 respectively.
  1451. #
  1452. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1453. #
  1454. # Almaty (formerly Alma-Ata), representing most locations in Kazakhstan
  1455. Zone Asia/Almaty 5:07:48 - LMT 1924 May 2 # or Alma-Ata
  1456. 5:00 - ALMT 1930 Jun 21 # Alma-Ata Time
  1457. 6:00 RussiaAsia ALM%sT 1991
  1458. 6:00 - ALMT 1992
  1459. 6:00 RussiaAsia ALM%sT 2005 Mar 15
  1460. 6:00 - ALMT
  1461. # Qyzylorda (aka Kyzylorda, Kizilorda, Kzyl-Orda, etc.)
  1462. Zone Asia/Qyzylorda 4:21:52 - LMT 1924 May 2
  1463. 4:00 - KIZT 1930 Jun 21 # Kizilorda Time
  1464. 5:00 - KIZT 1981 Apr 1
  1465. 5:00 1:00 KIZST 1981 Oct 1
  1466. 6:00 - KIZT 1982 Apr 1
  1467. 5:00 RussiaAsia KIZ%sT 1991
  1468. 5:00 - KIZT 1991 Dec 16 # independence
  1469. 5:00 - QYZT 1992 Jan 19 2:00
  1470. 6:00 RussiaAsia QYZ%sT 2005 Mar 15
  1471. 6:00 - QYZT
  1472. # Aqtobe (aka Aktobe, formerly Aktyubinsk)
  1473. Zone Asia/Aqtobe 3:48:40 - LMT 1924 May 2
  1474. 4:00 - AKTT 1930 Jun 21 # Aktyubinsk Time
  1475. 5:00 - AKTT 1981 Apr 1
  1476. 5:00 1:00 AKTST 1981 Oct 1
  1477. 6:00 - AKTT 1982 Apr 1
  1478. 5:00 RussiaAsia AKT%sT 1991
  1479. 5:00 - AKTT 1991 Dec 16 # independence
  1480. 5:00 RussiaAsia AQT%sT 2005 Mar 15 # Aqtobe Time
  1481. 5:00 - AQTT
  1482. # Mangghystau
  1483. # Aqtau was not founded until 1963, but it represents an inhabited region,
  1484. # so include time stamps before 1963.
  1485. Zone Asia/Aqtau 3:21:04 - LMT 1924 May 2
  1486. 4:00 - FORT 1930 Jun 21 # Fort Shevchenko T
  1487. 5:00 - FORT 1963
  1488. 5:00 - SHET 1981 Oct 1 # Shevchenko Time
  1489. 6:00 - SHET 1982 Apr 1
  1490. 5:00 RussiaAsia SHE%sT 1991
  1491. 5:00 - SHET 1991 Dec 16 # independence
  1492. 5:00 RussiaAsia AQT%sT 1995 Mar lastSun 2:00 # Aqtau Time
  1493. 4:00 RussiaAsia AQT%sT 2005 Mar 15
  1494. 5:00 - AQTT
  1495. # West Kazakhstan
  1496. Zone Asia/Oral 3:25:24 - LMT 1924 May 2 # or Ural'sk
  1497. 4:00 - URAT 1930 Jun 21 # Ural'sk time
  1498. 5:00 - URAT 1981 Apr 1
  1499. 5:00 1:00 URAST 1981 Oct 1
  1500. 6:00 - URAT 1982 Apr 1
  1501. 5:00 RussiaAsia URA%sT 1989 Mar 26 2:00
  1502. 4:00 RussiaAsia URA%sT 1991
  1503. 4:00 - URAT 1991 Dec 16 # independence
  1504. 4:00 RussiaAsia ORA%sT 2005 Mar 15 # Oral Time
  1505. 5:00 - ORAT
  1506. # Kyrgyzstan (Kirgizstan)
  1507. # Transitions through 1991 are from Shanks & Pottenger.
  1508. # From Paul Eggert (2005-08-15):
  1509. # According to an article dated today in the Kyrgyzstan Development Gateway
  1510. # http://eng.gateway.kg/cgi-bin/page.pl?id=1&story_name=doc9979.shtml
  1511. # Kyrgyzstan is canceling the daylight saving time system. I take the article
  1512. # to mean that they will leave their clocks at 6 hours ahead of UTC.
  1513. # From Malik Abdugaliev (2005-09-21):
  1514. # Our government cancels daylight saving time 6th of August 2005.
  1515. # From 2005-08-12 our GMT-offset is +6, w/o any daylight saving.
  1516. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1517. Rule Kyrgyz 1992 1996 - Apr Sun>=7 0:00s 1:00 S
  1518. Rule Kyrgyz 1992 1996 - Sep lastSun 0:00 0 -
  1519. Rule Kyrgyz 1997 2005 - Mar lastSun 2:30 1:00 S
  1520. Rule Kyrgyz 1997 2004 - Oct lastSun 2:30 0 -
  1521. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1522. Zone Asia/Bishkek 4:58:24 - LMT 1924 May 2
  1523. 5:00 - FRUT 1930 Jun 21 # Frunze Time
  1524. 6:00 RussiaAsia FRU%sT 1991 Mar 31 2:00s
  1525. 5:00 1:00 FRUST 1991 Aug 31 2:00 # independence
  1526. 5:00 Kyrgyz KG%sT 2005 Aug 12 # Kyrgyzstan Time
  1527. 6:00 - KGT
  1528. ###############################################################################
  1529. # Korea (North and South)
  1530. # From Annie I. Bang (2006-07-10):
  1531. # http://www.koreaherald.com/view.php?ud=200607100012
  1532. # Korea ran a daylight saving program from 1949-61 but stopped it
  1533. # during the 1950-53 Korean War. The system was temporarily enforced
  1534. # between 1987 and 1988 ...
  1535. # From Sanghyuk Jung (2014-10-29):
  1536. # http://mm.icann.org/pipermail/tz/2014-October/021830.html
  1537. # According to the Korean Wikipedia
  1538. # http://ko.wikipedia.org/wiki/한국_표준시
  1539. # [oldid=12896437 2014-09-04 08:03 UTC]
  1540. # DST in Republic of Korea was as follows.... And I checked old
  1541. # newspapers in Korean, all articles correspond with data in Wikipedia.
  1542. # For example, the article in 1948 (Korean Language) proved that DST
  1543. # started at June 1 in that year. For another example, the article in
  1544. # 1988 said that DST started at 2:00 AM in that year.
  1545. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1546. Rule ROK 1948 only - Jun 1 0:00 1:00 D
  1547. Rule ROK 1948 only - Sep 13 0:00 0 S
  1548. Rule ROK 1949 only - Apr 3 0:00 1:00 D
  1549. Rule ROK 1949 1951 - Sep Sun>=8 0:00 0 S
  1550. Rule ROK 1950 only - Apr 1 0:00 1:00 D
  1551. Rule ROK 1951 only - May 6 0:00 1:00 D
  1552. Rule ROK 1955 only - May 5 0:00 1:00 D
  1553. Rule ROK 1955 only - Sep 9 0:00 0 S
  1554. Rule ROK 1956 only - May 20 0:00 1:00 D
  1555. Rule ROK 1956 only - Sep 30 0:00 0 S
  1556. Rule ROK 1957 1960 - May Sun>=1 0:00 1:00 D
  1557. Rule ROK 1957 1960 - Sep Sun>=18 0:00 0 S
  1558. Rule ROK 1987 1988 - May Sun>=8 2:00 1:00 D
  1559. Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S
  1560. # From Paul Eggert (2014-10-30):
  1561. # The Korean Wikipedia entry gives the following sources for UT offsets:
  1562. #
  1563. # 1908: Official Journal Article No. 3994 (Edict No. 5)
  1564. # 1912: Governor-General of Korea Official Gazette Issue No. 367
  1565. # (Announcement No. 338)
  1566. # 1954: Presidential Decree No. 876 (1954-03-17)
  1567. # 1961: Law No. 676 (1961-08-07)
  1568. # 1987: Law No. 3919 (1986-12-31)
  1569. #
  1570. # The Wikipedia entry also has confusing information about a change
  1571. # to UT+9 in April 1910, but then what would be the point of the later change
  1572. # to UT+9 on 1912-01-01? Omit the 1910 change for now.
  1573. #
  1574. # I guessed that time zone abbreviations through 1945 followed the same
  1575. # rules as discussed under Taiwan, with nominal switches from JST to KST
  1576. # when the respective cities were taken over by the Allies after WWII.
  1577. #
  1578. # For Pyongyang we have no information; guess no changes since World War II.
  1579. # From Steffen Thorsen (2015-08-07):
  1580. # According to many news sources, North Korea is going to change to
  1581. # the 8:30 time zone on August 15, one example:
  1582. # http://www.bbc.com/news/world-asia-33815049
  1583. #
  1584. # From Paul Eggert (2015-08-15):
  1585. # Bells rang out midnight (00:00) Friday as part of the celebrations. See:
  1586. # Talmadge E. North Korea celebrates new time zone, 'Pyongyang Time'
  1587. # http://news.yahoo.com/north-korea-celebrates-time-zone-pyongyang-time-164038128.html
  1588. # There is no common English-language abbreviation for this time zone.
  1589. # Use KST, as that's what we already use for 1954-1961 in ROK.
  1590. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1591. Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1
  1592. 8:30 - KST 1912 Jan 1
  1593. 9:00 - JCST 1937 Oct 1
  1594. 9:00 - JST 1945 Sep 8
  1595. 9:00 - KST 1954 Mar 21
  1596. 8:30 ROK K%sT 1961 Aug 10
  1597. 9:00 ROK K%sT
  1598. Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1
  1599. 8:30 - KST 1912 Jan 1
  1600. 9:00 - JCST 1937 Oct 1
  1601. 9:00 - JST 1945 Aug 24
  1602. 9:00 - KST 2015 Aug 15 00:00
  1603. 8:30 - KST
  1604. ###############################################################################
  1605. # Kuwait
  1606. # See Asia/Riyadh.
  1607. # Laos
  1608. # See Asia/Bangkok.
  1609. # Lebanon
  1610. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1611. Rule Lebanon 1920 only - Mar 28 0:00 1:00 S
  1612. Rule Lebanon 1920 only - Oct 25 0:00 0 -
  1613. Rule Lebanon 1921 only - Apr 3 0:00 1:00 S
  1614. Rule Lebanon 1921 only - Oct 3 0:00 0 -
  1615. Rule Lebanon 1922 only - Mar 26 0:00 1:00 S
  1616. Rule Lebanon 1922 only - Oct 8 0:00 0 -
  1617. Rule Lebanon 1923 only - Apr 22 0:00 1:00 S
  1618. Rule Lebanon 1923 only - Sep 16 0:00 0 -
  1619. Rule Lebanon 1957 1961 - May 1 0:00 1:00 S
  1620. Rule Lebanon 1957 1961 - Oct 1 0:00 0 -
  1621. Rule Lebanon 1972 only - Jun 22 0:00 1:00 S
  1622. Rule Lebanon 1972 1977 - Oct 1 0:00 0 -
  1623. Rule Lebanon 1973 1977 - May 1 0:00 1:00 S
  1624. Rule Lebanon 1978 only - Apr 30 0:00 1:00 S
  1625. Rule Lebanon 1978 only - Sep 30 0:00 0 -
  1626. Rule Lebanon 1984 1987 - May 1 0:00 1:00 S
  1627. Rule Lebanon 1984 1991 - Oct 16 0:00 0 -
  1628. Rule Lebanon 1988 only - Jun 1 0:00 1:00 S
  1629. Rule Lebanon 1989 only - May 10 0:00 1:00 S
  1630. Rule Lebanon 1990 1992 - May 1 0:00 1:00 S
  1631. Rule Lebanon 1992 only - Oct 4 0:00 0 -
  1632. Rule Lebanon 1993 max - Mar lastSun 0:00 1:00 S
  1633. Rule Lebanon 1993 1998 - Sep lastSun 0:00 0 -
  1634. Rule Lebanon 1999 max - Oct lastSun 0:00 0 -
  1635. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1636. Zone Asia/Beirut 2:22:00 - LMT 1880
  1637. 2:00 Lebanon EE%sT
  1638. # Malaysia
  1639. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1640. Rule NBorneo 1935 1941 - Sep 14 0:00 0:20 TS # one-Third Summer
  1641. Rule NBorneo 1935 1941 - Dec 14 0:00 0 -
  1642. #
  1643. # peninsular Malaysia
  1644. # taken from Mok Ly Yng (2003-10-30)
  1645. # http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html
  1646. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1647. Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1
  1648. 6:55:25 - SMT 1905 Jun 1 # Singapore M.T.
  1649. 7:00 - MALT 1933 Jan 1 # Malaya Time
  1650. 7:00 0:20 MALST 1936 Jan 1
  1651. 7:20 - MALT 1941 Sep 1
  1652. 7:30 - MALT 1942 Feb 16
  1653. 9:00 - JST 1945 Sep 12
  1654. 7:30 - MALT 1982 Jan 1
  1655. 8:00 - MYT # Malaysia Time
  1656. # Sabah & Sarawak
  1657. # From Paul Eggert (2014-08-12):
  1658. # The data entries here are mostly from Shanks & Pottenger, but the 1942, 1945
  1659. # and 1982 transition dates are from Mok Ly Yng.
  1660. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1661. Zone Asia/Kuching 7:21:20 - LMT 1926 Mar
  1662. 7:30 - BORT 1933 # Borneo Time
  1663. 8:00 NBorneo BOR%sT 1942 Feb 16
  1664. 9:00 - JST 1945 Sep 12
  1665. 8:00 - BORT 1982 Jan 1
  1666. 8:00 - MYT
  1667. # Maldives
  1668. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1669. Zone Indian/Maldives 4:54:00 - LMT 1880 # Male
  1670. 4:54:00 - MMT 1960 # Male Mean Time
  1671. 5:00 - MVT # Maldives Time
  1672. # Mongolia
  1673. # Shanks & Pottenger say that Mongolia has three time zones, but
  1674. # The USNO (1995-12-21) and the CIA map Standard Time Zones of the World
  1675. # (2005-03) both say that it has just one.
  1676. # From Oscar van Vlijmen (1999-12-11):
  1677. # General Information Mongolia
  1678. # <http://www.mongoliatourism.gov.mn/general.htm> (1999-09)
  1679. # "Time: Mongolia has two time zones. Three westernmost provinces of
  1680. # Bayan-Ölgii, Uvs, and Hovd are one hour earlier than the capital city, and
  1681. # the rest of the country follows the Ulaanbaatar time, which is UTC/GMT plus
  1682. # eight hours."
  1683. # From Rives McDow (1999-12-13):
  1684. # Mongolia discontinued the use of daylight savings time in 1999; 1998
  1685. # being the last year it was implemented. The dates of implementation I am
  1686. # unsure of, but most probably it was similar to Russia, except for the time
  1687. # of implementation may have been different....
  1688. # Some maps in the past have indicated that there was an additional time
  1689. # zone in the eastern part of Mongolia, including the provinces of Dornod,
  1690. # Sükhbaatar, and possibly Khentii.
  1691. # From Paul Eggert (1999-12-15):
  1692. # Naming and spelling is tricky in Mongolia.
  1693. # We'll use Hovd (also spelled Chovd and Khovd) to represent the west zone;
  1694. # the capital of the Hovd province is sometimes called Hovd, sometimes Dund-Us,
  1695. # and sometimes Jirgalanta (with variant spellings), but the name Hovd
  1696. # is good enough for our purposes.
  1697. # From Rives McDow (2001-05-13):
  1698. # In addition to Mongolia starting daylight savings as reported earlier
  1699. # (adopted DST on 2001-04-27 02:00 local time, ending 2001-09-28),
  1700. # there are three time zones.
  1701. #
  1702. # Provinces [at 7:00]: Bayan-Ölgii, Uvs, Khovd, Zavkhan, Govi-Altai
  1703. # Provinces [at 8:00]: Khövsgöl, Bulgan, Arkhangai, Khentii, Töv,
  1704. # Bayankhongor, Övörkhangai, Dundgovi, Dornogovi, Ömnögovi
  1705. # Provinces [at 9:00]: Dornod, Sükhbaatar
  1706. #
  1707. # [The province of Selenge is omitted from the above lists.]
  1708. # From Ganbold Ts., Ulaanbaatar (2004-04-17):
  1709. # Daylight saving occurs at 02:00 local time last Saturday of March.
  1710. # It will change back to normal at 02:00 local time last Saturday of
  1711. # September.... As I remember this rule was changed in 2001.
  1712. #
  1713. # From Paul Eggert (2004-04-17):
  1714. # For now, assume Rives McDow's informant got confused about Friday vs
  1715. # Saturday, and that his 2001 dates should have 1 added to them.
  1716. # From Paul Eggert (2005-07-26):
  1717. # We have wildly conflicting information about Mongolia's time zones.
  1718. # Bill Bonnet (2005-05-19) reports that the US Embassy in Ulaanbaatar says
  1719. # there is only one time zone and that DST is observed, citing Microsoft
  1720. # Windows XP as the source. Risto Nykänen (2005-05-16) reports that
  1721. # travelmongolia.org says there are two time zones (UTC+7, UTC+8) with no DST.
  1722. # Oscar van Vlijmen (2005-05-20) reports that the Mongolian Embassy in
  1723. # Washington, DC says there are two time zones, with DST observed.
  1724. # He also found
  1725. # http://ubpost.mongolnews.mn/index.php?subaction=showcomments&id=1111634894&archive=&start_from=&ucat=1&
  1726. # which also says that there is DST, and which has a comment by "Toddius"
  1727. # (2005-03-31 06:05 +0700) saying "Mongolia actually has 3.5 time zones.
  1728. # The West (OLGII) is +7 GMT, most of the country is ULAT is +8 GMT
  1729. # and some Eastern provinces are +9 GMT but Sükhbaatar Aimag is SUHK +8.5 GMT.
  1730. # The SUKH timezone is new this year, it is one of the few things the
  1731. # parliament passed during the tumultuous winter session."
  1732. # For now, let's ignore this information, until we have more confirmation.
  1733. # From Ganbold Ts. (2007-02-26):
  1734. # Parliament of Mongolia has just changed the daylight-saving rule in February.
  1735. # They decided not to adopt daylight-saving time....
  1736. # http://www.mongolnews.mn/index.php?module=unuudur&sec=view&id=15742
  1737. # From Deborah Goldsmith (2008-03-30):
  1738. # We received a bug report claiming that the tz database UTC offset for
  1739. # Asia/Choibalsan (GMT+09:00) is incorrect, and that it should be GMT
  1740. # +08:00 instead. Different sources appear to disagree with the tz
  1741. # database on this, e.g.:
  1742. #
  1743. # http://www.timeanddate.com/worldclock/city.html?n=1026
  1744. # http://www.worldtimeserver.com/current_time_in_MN.aspx
  1745. #
  1746. # both say GMT+08:00.
  1747. # From Steffen Thorsen (2008-03-31):
  1748. # eznis airways, which operates several domestic flights, has a flight
  1749. # schedule here:
  1750. # http://www.eznis.com/Container.jsp?id=112
  1751. # (click the English flag for English)
  1752. #
  1753. # There it appears that flights between Choibalsan and Ulaanbaatar arrive
  1754. # about 1:35 - 1:50 hours later in local clock time, no matter the
  1755. # direction, while Ulaanbaatar-Khovd takes 2 hours in the Eastern
  1756. # direction and 3:35 back, which indicates that Ulaanbaatar and Khovd are
  1757. # in different time zones (like we know about), while Choibalsan and
  1758. # Ulaanbaatar are in the same time zone (correction needed).
  1759. # From Arthur David Olson (2008-05-19):
  1760. # Assume that Choibalsan is indeed offset by 8:00.
  1761. # XXX--in the absence of better information, assume that transition
  1762. # was at the start of 2008-03-31 (the day of Steffen Thorsen's report);
  1763. # this is almost surely wrong.
  1764. # From Ganbold Tsagaankhuu (2015-03-10):
  1765. # It seems like yesterday Mongolian Government meeting has concluded to use
  1766. # daylight saving time in Mongolia.... Starting at 2:00AM of last Saturday of
  1767. # March 2015, daylight saving time starts. And 00:00AM of last Saturday of
  1768. # September daylight saving time ends. Source:
  1769. # http://zasag.mn/news/view/8969
  1770. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1771. Rule Mongol 1983 1984 - Apr 1 0:00 1:00 S
  1772. Rule Mongol 1983 only - Oct 1 0:00 0 -
  1773. # Shanks & Pottenger and IATA SSIM say 1990s switches occurred at 00:00,
  1774. # but McDow says the 2001 switches occurred at 02:00. Also, IATA SSIM
  1775. # (1996-09) says 1996-10-25. Go with Shanks & Pottenger through 1998.
  1776. #
  1777. # Shanks & Pottenger say that the Sept. 1984 through Sept. 1990 switches
  1778. # in Choibalsan (more precisely, in Dornod and Sükhbaatar) took place
  1779. # at 02:00 standard time, not at 00:00 local time as in the rest of
  1780. # the country. That would be odd, and possibly is a result of their
  1781. # correction of 02:00 (in the previous edition) not being done correctly
  1782. # in the latest edition; so ignore it for now.
  1783. Rule Mongol 1985 1998 - Mar lastSun 0:00 1:00 S
  1784. Rule Mongol 1984 1998 - Sep lastSun 0:00 0 -
  1785. # IATA SSIM (1999-09) says Mongolia no longer observes DST.
  1786. Rule Mongol 2001 only - Apr lastSat 2:00 1:00 S
  1787. Rule Mongol 2001 2006 - Sep lastSat 2:00 0 -
  1788. Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 S
  1789. Rule Mongol 2015 max - Mar lastSat 2:00 1:00 S
  1790. Rule Mongol 2015 max - Sep lastSat 0:00 0 -
  1791. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1792. # Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta
  1793. Zone Asia/Hovd 6:06:36 - LMT 1905 Aug
  1794. 6:00 - HOVT 1978 # Hovd Time
  1795. 7:00 Mongol HOV%sT
  1796. # Ulaanbaatar, a.k.a. Ulan Bataar, Ulan Bator, Urga
  1797. Zone Asia/Ulaanbaatar 7:07:32 - LMT 1905 Aug
  1798. 7:00 - ULAT 1978 # Ulaanbaatar Time
  1799. 8:00 Mongol ULA%sT
  1800. # Choibalsan, a.k.a. Bajan Tümen, Bajan Tumen, Chojbalsan,
  1801. # Choybalsan, Sanbejse, Tchoibalsan
  1802. Zone Asia/Choibalsan 7:38:00 - LMT 1905 Aug
  1803. 7:00 - ULAT 1978
  1804. 8:00 - ULAT 1983 Apr
  1805. 9:00 Mongol CHO%sT 2008 Mar 31 # Choibalsan Time
  1806. 8:00 Mongol CHO%sT
  1807. # Nepal
  1808. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1809. Zone Asia/Kathmandu 5:41:16 - LMT 1920
  1810. 5:30 - IST 1986
  1811. 5:45 - NPT # Nepal Time
  1812. # Oman
  1813. # See Asia/Dubai.
  1814. # Pakistan
  1815. # From Rives McDow (2002-03-13):
  1816. # I have been advised that Pakistan has decided to adopt dst on a
  1817. # TRIAL basis for one year, starting 00:01 local time on April 7, 2002
  1818. # and ending at 00:01 local time October 6, 2002. This is what I was
  1819. # told, but I believe that the actual time of change may be 00:00; the
  1820. # 00:01 was to make it clear which day it was on.
  1821. # From Paul Eggert (2002-03-15):
  1822. # Jesper Nørgaard found this URL:
  1823. # http://www.pak.gov.pk/public/news/app/app06_dec.htm
  1824. # (dated 2001-12-06) which says that the Cabinet adopted a scheme "to
  1825. # advance the clocks by one hour on the night between the first
  1826. # Saturday and Sunday of April and revert to the original position on
  1827. # 15th October each year". This agrees with McDow's 04-07 at 00:00,
  1828. # but disagrees about the October transition, and makes it sound like
  1829. # it's not on a trial basis. Also, the "between the first Saturday
  1830. # and Sunday of April" phrase, if taken literally, means that the
  1831. # transition takes place at 00:00 on the first Sunday on or after 04-02.
  1832. # From Paul Eggert (2003-02-09):
  1833. # DAWN <http://www.dawn.com/2002/10/06/top13.htm> reported on 2002-10-05
  1834. # that 2002 DST ended that day at midnight. Go with McDow for now.
  1835. # From Steffen Thorsen (2003-03-14):
  1836. # According to http://www.dawn.com/2003/03/07/top15.htm
  1837. # there will be no DST in Pakistan this year:
  1838. #
  1839. # ISLAMABAD, March 6: Information and Media Development Minister Sheikh
  1840. # Rashid Ahmed on Thursday said the cabinet had reversed a previous
  1841. # decision to advance clocks by one hour in summer and put them back by
  1842. # one hour in winter with the aim of saving light hours and energy.
  1843. #
  1844. # The minister told a news conference that the experiment had rather
  1845. # shown 8 per cent higher consumption of electricity.
  1846. # From Alex Krivenyshev (2008-05-15):
  1847. #
  1848. # Here is an article that Pakistan plan to introduce Daylight Saving Time
  1849. # on June 1, 2008 for 3 months.
  1850. #
  1851. # "... The federal cabinet on Wednesday announced a new conservation plan to
  1852. # help reduce load shedding by approving the closure of commercial centres at
  1853. # 9pm and moving clocks forward by one hour for the next three months. ...."
  1854. #
  1855. # http://www.worldtimezone.net/dst_news/dst_news_pakistan01.html
  1856. # http://www.dailytimes.com.pk/default.asp?page=2008%5C05%5C15%5Cstory_15-5-2008_pg1_4
  1857. # From Arthur David Olson (2008-05-19):
  1858. # XXX--midnight transitions is a guess; 2008 only is a guess.
  1859. # From Alexander Krivenyshev (2008-08-28):
  1860. # Pakistan government has decided to keep the watches one-hour advanced
  1861. # for another 2 months - plan to return to Standard Time on October 31
  1862. # instead of August 31.
  1863. #
  1864. # http://www.worldtimezone.com/dst_news/dst_news_pakistan02.html
  1865. # http://dailymailnews.com/200808/28/news/dmbrn03.html
  1866. # From Alexander Krivenyshev (2009-04-08):
  1867. # Based on previous media reports that "... proposed plan to
  1868. # advance clocks by one hour from May 1 will cause disturbance
  1869. # to the working schedules rather than bringing discipline in
  1870. # official working."
  1871. # http://www.thenews.com.pk/daily_detail.asp?id=171280
  1872. #
  1873. # recent news that instead of May 2009 - Pakistan plan to
  1874. # introduce DST from April 15, 2009
  1875. #
  1876. # FYI: Associated Press Of Pakistan
  1877. # April 08, 2009
  1878. # Cabinet okays proposal to advance clocks by one hour from April 15
  1879. # http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=73043&Itemid=1
  1880. # http://www.worldtimezone.com/dst_news/dst_news_pakistan05.html
  1881. #
  1882. # ....
  1883. # The Federal Cabinet on Wednesday approved the proposal to
  1884. # advance clocks in the country by one hour from April 15 to
  1885. # conserve energy"
  1886. # From Steffen Thorsen (2009-09-17):
  1887. # "The News International," Pakistan reports that: "The Federal
  1888. # Government has decided to restore the previous time by moving the
  1889. # clocks backward by one hour from October 1. A formal announcement to
  1890. # this effect will be made after the Prime Minister grants approval in
  1891. # this regard."
  1892. # http://www.thenews.com.pk/updates.asp?id=87168
  1893. # From Alexander Krivenyshev (2009-09-28):
  1894. # According to Associated Press Of Pakistan, it is confirmed that
  1895. # Pakistan clocks across the country would be turned back by an hour from
  1896. # October 1, 2009.
  1897. #
  1898. # "Clocks to go back one hour from 1 Oct"
  1899. # http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=86715&Itemid=2
  1900. # http://www.worldtimezone.com/dst_news/dst_news_pakistan07.htm
  1901. #
  1902. # From Steffen Thorsen (2009-09-29):
  1903. # Now they seem to have changed their mind, November 1 is the new date:
  1904. # http://www.thenews.com.pk/top_story_detail.asp?Id=24742
  1905. # "The country's clocks will be reversed by one hour on November 1.
  1906. # Officials of Federal Ministry for Interior told this to Geo News on
  1907. # Monday."
  1908. #
  1909. # And more importantly, it seems that these dates will be kept every year:
  1910. # "It has now been decided that clocks will be wound forward by one hour
  1911. # on April 15 and reversed by an hour on November 1 every year without
  1912. # obtaining prior approval, the officials added."
  1913. #
  1914. # We have confirmed this year's end date with both with the Ministry of
  1915. # Water and Power and the Pakistan Electric Power Company:
  1916. # http://www.timeanddate.com/news/time/pakistan-ends-dst09.html
  1917. # From Christoph Göhre (2009-10-01):
  1918. # [T]he German Consulate General in Karachi reported me today that Pakistan
  1919. # will go back to standard time on 1st of November.
  1920. # From Steffen Thorsen (2010-03-26):
  1921. # Steffen Thorsen wrote:
  1922. # > On Thursday (2010-03-25) it was announced that DST would start in
  1923. # > Pakistan on 2010-04-01.
  1924. # >
  1925. # > Then today, the president said that they might have to revert the
  1926. # > decision if it is not supported by the parliament. So at the time
  1927. # > being, it seems unclear if DST will be actually observed or not - but
  1928. # > April 1 could be a more likely date than April 15.
  1929. # Now, it seems that the decision to not observe DST in final:
  1930. #
  1931. # "Govt Withdraws Plan To Advance Clocks"
  1932. # http://www.apakistannews.com/govt-withdraws-plan-to-advance-clocks-172041
  1933. #
  1934. # "People laud PM's announcement to end DST"
  1935. # http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=99374&Itemid=2
  1936. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  1937. Rule Pakistan 2002 only - Apr Sun>=2 0:01 1:00 S
  1938. Rule Pakistan 2002 only - Oct Sun>=2 0:01 0 -
  1939. Rule Pakistan 2008 only - Jun 1 0:00 1:00 S
  1940. Rule Pakistan 2008 2009 - Nov 1 0:00 0 -
  1941. Rule Pakistan 2009 only - Apr 15 0:00 1:00 S
  1942. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  1943. Zone Asia/Karachi 4:28:12 - LMT 1907
  1944. 5:30 - IST 1942 Sep
  1945. 5:30 1:00 IST 1945 Oct 15
  1946. 5:30 - IST 1951 Sep 30
  1947. 5:00 - KART 1971 Mar 26 # Karachi Time
  1948. 5:00 Pakistan PK%sT # Pakistan Time
  1949. # Palestine
  1950. # From Amos Shapir (1998-02-15):
  1951. #
  1952. # From 1917 until 1948-05-15, all of Palestine, including the parts now
  1953. # known as the Gaza Strip and the West Bank, was under British rule.
  1954. # Therefore the rules given for Israel for that period, apply there too...
  1955. #
  1956. # The Gaza Strip was under Egyptian rule between 1948-05-15 until 1967-06-05
  1957. # (except a short occupation by Israel from 1956-11 till 1957-03, but no
  1958. # time zone was affected then). It was never formally annexed to Egypt,
  1959. # though.
  1960. #
  1961. # The rest of Palestine was under Jordanian rule at that time, formally
  1962. # annexed in 1950 as the West Bank (and the word "Trans" was dropped from
  1963. # the country's previous name of "the Hashemite Kingdom of the
  1964. # Trans-Jordan"). So the rules for Jordan for that time apply. Major
  1965. # towns in that area are Nablus (Shchem), El-Halil (Hebron), Ramallah, and
  1966. # East Jerusalem.
  1967. #
  1968. # Both areas were occupied by Israel in June 1967, but not annexed (except
  1969. # for East Jerusalem). They were on Israel time since then; there might
  1970. # have been a Military Governor's order about time zones, but I'm not aware
  1971. # of any (such orders may have been issued semi-annually whenever summer
  1972. # time was in effect, but maybe the legal aspect of time was just neglected).
  1973. #
  1974. # The Palestinian Authority was established in 1993, and got hold of most
  1975. # towns in the West Bank and Gaza by 1995. I know that in order to
  1976. # demonstrate...independence, they have been switching to
  1977. # summer time and back on a different schedule than Israel's, but I don't
  1978. # know when this was started, or what algorithm is used (most likely the
  1979. # Jordanian one).
  1980. #
  1981. # To summarize, the table should probably look something like that:
  1982. #
  1983. # Area \ when | 1918-1947 | 1948-1967 | 1967-1995 | 1996-
  1984. # ------------+-----------+-----------+-----------+-----------
  1985. # Israel | Zion | Zion | Zion | Zion
  1986. # West bank | Zion | Jordan | Zion | Jordan
  1987. # Gaza | Zion | Egypt | Zion | Jordan
  1988. #
  1989. # I guess more info may be available from the PA's web page (if/when they
  1990. # have one).
  1991. # From Paul Eggert (2006-03-22):
  1992. # Shanks & Pottenger write that Gaza did not observe DST until 1957, but go
  1993. # with Shapir and assume that it observed DST from 1940 through 1947,
  1994. # and that it used Jordanian rules starting in 1996.
  1995. # We don't yet need a separate entry for the West Bank, since
  1996. # the only differences between it and Gaza that we know about
  1997. # occurred before our cutoff date of 1970.
  1998. # However, as we get more information, we may need to add entries
  1999. # for parts of the West Bank as they transitioned from Israel's rules
  2000. # to Palestine's rules.
  2001. # From IINS News Service - Israel - 1998-03-23 10:38:07 Israel time,
  2002. # forwarded by Ephraim Silverberg:
  2003. #
  2004. # Despite the fact that Israel changed over to daylight savings time
  2005. # last week, the PLO Authority (PA) has decided not to turn its clocks
  2006. # one-hour forward at this time. As a sign of independence from Israeli rule,
  2007. # the PA has decided to implement DST in April.
  2008. # From Paul Eggert (1999-09-20):
  2009. # Daoud Kuttab writes in Holiday havoc
  2010. # http://www.jpost.com/com/Archive/22.Apr.1999/Opinion/Article-2.html
  2011. # (Jerusalem Post, 1999-04-22) that
  2012. # the Palestinian National Authority changed to DST on 1999-04-15.
  2013. # I vaguely recall that they switch back in October (sorry, forgot the source).
  2014. # For now, let's assume that the spring switch was at 24:00,
  2015. # and that they switch at 0:00 on the 3rd Fridays of April and October.
  2016. # From Paul Eggert (2005-11-22):
  2017. # Starting 2004 transitions are from Steffen Thorsen's web site timeanddate.com.
  2018. # From Steffen Thorsen (2005-11-23):
  2019. # A user from Gaza reported that Gaza made the change early because of
  2020. # the Ramadan. Next year Ramadan will be even earlier, so I think
  2021. # there is a good chance next year's end date will be around two weeks
  2022. # earlier - the same goes for Jordan.
  2023. # From Steffen Thorsen (2006-08-17):
  2024. # I was informed by a user in Bethlehem that in Bethlehem it started the
  2025. # same day as Israel, and after checking with other users in the area, I
  2026. # was informed that they started DST one day after Israel. I was not
  2027. # able to find any authoritative sources at the time, nor details if
  2028. # Gaza changed as well, but presumed Gaza to follow the same rules as
  2029. # the West Bank.
  2030. # From Steffen Thorsen (2006-09-26):
  2031. # according to the Palestine News Network (2006-09-19):
  2032. # http://english.pnn.ps/index.php?option=com_content&task=view&id=596&Itemid=5
  2033. # > The Council of Ministers announced that this year its winter schedule
  2034. # > will begin early, as of midnight Thursday. It is also time to turn
  2035. # > back the clocks for winter. Friday will begin an hour late this week.
  2036. # I guess it is likely that next year's date will be moved as well,
  2037. # because of the Ramadan.
  2038. # From Jesper Nørgaard Welen (2007-09-18):
  2039. # According to Steffen Thorsen's web site the Gaza Strip and the rest of the
  2040. # Palestinian territories left DST early on 13.th. of September at 2:00.
  2041. # From Paul Eggert (2007-09-20):
  2042. # My understanding is that Gaza and the West Bank disagree even over when
  2043. # the weekend is (Thursday+Friday versus Friday+Saturday), so I'd be a bit
  2044. # surprised if they agreed about DST. But for now, assume they agree.
  2045. # For lack of better information, predict that future changes will be
  2046. # the 2nd Thursday of September at 02:00.
  2047. # From Alexander Krivenyshev (2008-08-28):
  2048. # Here is an article, that Mideast running on different clocks at Ramadan.
  2049. #
  2050. # Gaza Strip (as Egypt) ended DST at midnight Thursday (Aug 28, 2008), while
  2051. # the West Bank will end Daylight Saving Time at midnight Sunday (Aug 31, 2008).
  2052. #
  2053. # http://www.guardian.co.uk/world/feedarticle/7759001
  2054. # http://www.abcnews.go.com/International/wireStory?id=5676087
  2055. # http://www.worldtimezone.com/dst_news/dst_news_gazastrip01.html
  2056. # From Alexander Krivenyshev (2009-03-26):
  2057. # According to the Palestine News Network (arabic.pnn.ps), Palestinian
  2058. # government decided to start Daylight Time on Thursday night March
  2059. # 26 and continue until the night of 27 September 2009.
  2060. #
  2061. # (in Arabic)
  2062. # http://arabic.pnn.ps/index.php?option=com_content&task=view&id=50850
  2063. #
  2064. # (English translation)
  2065. # http://www.worldtimezone.com/dst_news/dst_news_westbank01.html
  2066. # From Steffen Thorsen (2009-08-31):
  2067. # Palestine's Council of Ministers announced that they will revert back to
  2068. # winter time on Friday, 2009-09-04.
  2069. #
  2070. # One news source:
  2071. # http://www.safa.ps/ara/?action=showdetail&seid=4158
  2072. # (Palestinian press agency, Arabic),
  2073. # Google translate: "Decided that the Palestinian government in Ramallah
  2074. # headed by Salam Fayyad, the start of work in time for the winter of
  2075. # 2009, starting on Friday approved the fourth delay Sept. clock sixty
  2076. # minutes per hour as of Friday morning."
  2077. #
  2078. # We are not sure if Gaza will do the same, last year they had a different
  2079. # end date, we will keep this page updated:
  2080. # http://www.timeanddate.com/news/time/westbank-gaza-dst-2009.html
  2081. # From Alexander Krivenyshev (2009-09-02):
  2082. # Seems that Gaza Strip will go back to Winter Time same date as West Bank.
  2083. #
  2084. # According to Palestinian Ministry Of Interior, West Bank and Gaza Strip plan
  2085. # to change time back to Standard time on September 4, 2009.
  2086. #
  2087. # "Winter time unite the West Bank and Gaza"
  2088. # (from Palestinian National Authority):
  2089. # http://www.moi.gov.ps/en/?page=633167343250594025&nid=11505
  2090. # http://www.worldtimezone.com/dst_news/dst_news_gazastrip02.html
  2091. # From Alexander Krivenyshev (2010-03-19):
  2092. # According to Voice of Palestine DST will last for 191 days, from March
  2093. # 26, 2010 till "the last Sunday before the tenth day of Tishri
  2094. # (October), each year" (October 03, 2010?)
  2095. #
  2096. # http://palvoice.org/forums/showthread.php?t=245697
  2097. # (in Arabic)
  2098. # http://www.worldtimezone.com/dst_news/dst_news_westbank03.html
  2099. # From Steffen Thorsen (2010-03-24):
  2100. # ...Ma'an News Agency reports that Hamas cabinet has decided it will
  2101. # start one day later, at 12:01am. Not sure if they really mean 12:01am or
  2102. # noon though:
  2103. #
  2104. # http://www.maannews.net/eng/ViewDetails.aspx?ID=271178
  2105. # (Ma'an News Agency)
  2106. # "At 12:01am Friday, clocks in Israel and the West Bank will change to
  2107. # 1:01am, while Gaza clocks will change at 12:01am Saturday morning."
  2108. # From Steffen Thorsen (2010-08-11):
  2109. # According to several sources, including
  2110. # http://www.maannews.net/eng/ViewDetails.aspx?ID=306795
  2111. # the clocks were set back one hour at 2010-08-11 00:00:00 local time in
  2112. # Gaza and the West Bank.
  2113. # Some more background info:
  2114. # http://www.timeanddate.com/news/time/westbank-gaza-end-dst-2010.html
  2115. # From Steffen Thorsen (2011-08-26):
  2116. # Gaza and the West Bank did go back to standard time in the beginning of
  2117. # August, and will now enter daylight saving time again on 2011-08-30
  2118. # 00:00 (so two periods of DST in 2011). The pause was because of
  2119. # Ramadan.
  2120. #
  2121. # http://www.maannews.net/eng/ViewDetails.aspx?ID=416217
  2122. # Additional info:
  2123. # http://www.timeanddate.com/news/time/palestine-dst-2011.html
  2124. # From Alexander Krivenyshev (2011-08-27):
  2125. # According to the article in The Jerusalem Post:
  2126. # "...Earlier this month, the Palestinian government in the West Bank decided to
  2127. # move to standard time for 30 days, during Ramadan. The Palestinians in the
  2128. # Gaza Strip accepted the change and also moved their clocks one hour back.
  2129. # The Hamas government said on Saturday that it won't observe summertime after
  2130. # the Muslim feast of Id al-Fitr, which begins on Tuesday..."
  2131. # ...
  2132. # http://www.jpost.com/MiddleEast/Article.aspx?id=235650
  2133. # http://www.worldtimezone.com/dst_news/dst_news_gazastrip05.html
  2134. # The rules for Egypt are stolen from the 'africa' file.
  2135. # From Steffen Thorsen (2011-09-30):
  2136. # West Bank did end Daylight Saving Time this morning/midnight (2011-09-30
  2137. # 00:00).
  2138. # So West Bank and Gaza now have the same time again.
  2139. #
  2140. # Many sources, including:
  2141. # http://www.maannews.net/eng/ViewDetails.aspx?ID=424808
  2142. # From Steffen Thorsen (2012-03-26):
  2143. # Palestinian news sources tell that both Gaza and West Bank will start DST
  2144. # on Friday (Thursday midnight, 2012-03-29 24:00).
  2145. # Some of many sources in Arabic:
  2146. # http://www.samanews.com/index.php?act=Show&id=122638
  2147. #
  2148. # http://safa.ps/details/news/74352/%D8%A8%D8%AF%D8%A1-%D8%A7%D9%84%D8%AA%D9%88%D9%82%D9%8A%D8%AA-%D8%A7%D9%84%D8%B5%D9%8A%D9%81%D9%8A-%D8%A8%D8%A7%D9%84%D8%B6%D9%81%D8%A9-%D9%88%D8%BA%D8%B2%D8%A9-%D9%84%D9%8A%D9%84%D8%A9-%D8%A7%D9%84%D8%AC%D9%85%D8%B9%D8%A9.html
  2149. #
  2150. # Our brief summary:
  2151. # http://www.timeanddate.com/news/time/gaza-west-bank-dst-2012.html
  2152. # From Steffen Thorsen (2013-03-26):
  2153. # The following news sources tells that Palestine will "start daylight saving
  2154. # time from midnight on Friday, March 29, 2013" (translated).
  2155. # [These are in Arabic and are for Gaza and for Ramallah, respectively.]
  2156. # http://www.samanews.com/index.php?act=Show&id=154120
  2157. # http://safa.ps/details/news/99844/%D8%B1%D8%A7%D9%85-%D8%A7%D9%84%D9%84%D9%87-%D8%A8%D8%AF%D8%A1-%D8%A7%D9%84%D8%AA%D9%88%D9%82%D9%8A%D8%AA-%D8%A7%D9%84%D8%B5%D9%8A%D9%81%D9%8A-29-%D8%A7%D9%84%D8%AC%D8%A7%D8%B1%D9%8A.html
  2158. # From Steffen Thorsen (2013-09-24):
  2159. # The Gaza and West Bank are ending DST Thursday at midnight
  2160. # (2013-09-27 00:00:00) (one hour earlier than last year...).
  2161. # This source in English, says "that winter time will go into effect
  2162. # at midnight on Thursday in the West Bank and Gaza Strip":
  2163. # http://english.wafa.ps/index.php?action=detail&id=23246
  2164. # official source...:
  2165. # http://www.palestinecabinet.gov.ps/ar/Views/ViewDetails.aspx?pid=1252
  2166. # From Steffen Thorsen (2015-03-03):
  2167. # Sources such as http://www.alquds.com/news/article/view/id/548257
  2168. # and http://www.raya.ps/ar/news/890705.html say Palestine areas will
  2169. # start DST on 2015-03-28 00:00 which is one day later than expected.
  2170. #
  2171. # From Paul Eggert (2015-03-03):
  2172. # http://www.timeanddate.com/time/change/west-bank/ramallah?year=2014
  2173. # says that the fall 2014 transition was Oct 23 at 24:00.
  2174. # For future dates, guess the last Friday in March at 24:00 through
  2175. # the first Friday on or after October 21 at 00:00. This is consistent with
  2176. # the predictions in today's editions of the following URLs:
  2177. # http://www.timeanddate.com/time/change/gaza-strip/gaza
  2178. # http://www.timeanddate.com/time/change/west-bank/hebron
  2179. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  2180. Rule EgyptAsia 1957 only - May 10 0:00 1:00 S
  2181. Rule EgyptAsia 1957 1958 - Oct 1 0:00 0 -
  2182. Rule EgyptAsia 1958 only - May 1 0:00 1:00 S
  2183. Rule EgyptAsia 1959 1967 - May 1 1:00 1:00 S
  2184. Rule EgyptAsia 1959 1965 - Sep 30 3:00 0 -
  2185. Rule EgyptAsia 1966 only - Oct 1 3:00 0 -
  2186. Rule Palestine 1999 2005 - Apr Fri>=15 0:00 1:00 S
  2187. Rule Palestine 1999 2003 - Oct Fri>=15 0:00 0 -
  2188. Rule Palestine 2004 only - Oct 1 1:00 0 -
  2189. Rule Palestine 2005 only - Oct 4 2:00 0 -
  2190. Rule Palestine 2006 2007 - Apr 1 0:00 1:00 S
  2191. Rule Palestine 2006 only - Sep 22 0:00 0 -
  2192. Rule Palestine 2007 only - Sep Thu>=8 2:00 0 -
  2193. Rule Palestine 2008 2009 - Mar lastFri 0:00 1:00 S
  2194. Rule Palestine 2008 only - Sep 1 0:00 0 -
  2195. Rule Palestine 2009 only - Sep Fri>=1 1:00 0 -
  2196. Rule Palestine 2010 only - Mar 26 0:00 1:00 S
  2197. Rule Palestine 2010 only - Aug 11 0:00 0 -
  2198. Rule Palestine 2011 only - Apr 1 0:01 1:00 S
  2199. Rule Palestine 2011 only - Aug 1 0:00 0 -
  2200. Rule Palestine 2011 only - Aug 30 0:00 1:00 S
  2201. Rule Palestine 2011 only - Sep 30 0:00 0 -
  2202. Rule Palestine 2012 2014 - Mar lastThu 24:00 1:00 S
  2203. Rule Palestine 2012 only - Sep 21 1:00 0 -
  2204. Rule Palestine 2013 only - Sep Fri>=21 0:00 0 -
  2205. Rule Palestine 2014 max - Oct Fri>=21 0:00 0 -
  2206. Rule Palestine 2015 max - Mar lastFri 24:00 1:00 S
  2207. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  2208. Zone Asia/Gaza 2:17:52 - LMT 1900 Oct
  2209. 2:00 Zion EET 1948 May 15
  2210. 2:00 EgyptAsia EE%sT 1967 Jun 5
  2211. 2:00 Zion I%sT 1996
  2212. 2:00 Jordan EE%sT 1999
  2213. 2:00 Palestine EE%sT 2008 Aug 29 0:00
  2214. 2:00 - EET 2008 Sep
  2215. 2:00 Palestine EE%sT 2010
  2216. 2:00 - EET 2010 Mar 27 0:01
  2217. 2:00 Palestine EE%sT 2011 Aug 1
  2218. 2:00 - EET 2012
  2219. 2:00 Palestine EE%sT
  2220. Zone Asia/Hebron 2:20:23 - LMT 1900 Oct
  2221. 2:00 Zion EET 1948 May 15
  2222. 2:00 EgyptAsia EE%sT 1967 Jun 5
  2223. 2:00 Zion I%sT 1996
  2224. 2:00 Jordan EE%sT 1999
  2225. 2:00 Palestine EE%sT
  2226. # Paracel Is
  2227. # no information
  2228. # Philippines
  2229. # On 1844-08-16, Narciso Clavería, governor-general of the
  2230. # Philippines, issued a proclamation announcing that 1844-12-30 was to
  2231. # be immediately followed by 1845-01-01; see R.H. van Gent's
  2232. # History of the International Date Line
  2233. # http://www.staff.science.uu.nl/~gent0113/idl/idl_philippines.htm
  2234. # The rest of the data entries are from Shanks & Pottenger.
  2235. # From Jesper Nørgaard Welen (2006-04-26):
  2236. # ... claims that Philippines had DST last time in 1990:
  2237. # http://story.philippinetimes.com/p.x/ct/9/id/145be20cc6b121c0/cid/3e5bbccc730d258c/
  2238. # [a story dated 2006-04-25 by Cris Larano of Dow Jones Newswires,
  2239. # but no details]
  2240. # From Paul Eggert (2014-08-14):
  2241. # The following source says DST may be instituted November-January and again
  2242. # March-June, but this is not definite. It also says DST was last proclaimed
  2243. # during the Ramos administration (1992-1998); but again, no details.
  2244. # Carcamo D. PNoy urged to declare use of daylight saving time.
  2245. # Philippine Star 2014-08-05
  2246. # http://www.philstar.com/headlines/2014/08/05/1354152/pnoy-urged-declare-use-daylight-saving-time
  2247. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  2248. Rule Phil 1936 only - Nov 1 0:00 1:00 S
  2249. Rule Phil 1937 only - Feb 1 0:00 0 -
  2250. Rule Phil 1954 only - Apr 12 0:00 1:00 S
  2251. Rule Phil 1954 only - Jul 1 0:00 0 -
  2252. Rule Phil 1978 only - Mar 22 0:00 1:00 S
  2253. Rule Phil 1978 only - Sep 21 0:00 0 -
  2254. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  2255. Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31
  2256. 8:04:00 - LMT 1899 May 11
  2257. 8:00 Phil PH%sT 1942 May
  2258. 9:00 - JST 1944 Nov
  2259. 8:00 Phil PH%sT
  2260. # Qatar
  2261. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  2262. Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha
  2263. 4:00 - GST 1972 Jun
  2264. 3:00 - AST
  2265. Link Asia/Qatar Asia/Bahrain
  2266. # Saudi Arabia
  2267. #
  2268. # From Paul Eggert (2014-07-15):
  2269. # Time in Saudi Arabia and other countries in the Arabian peninsula was not
  2270. # standardized until relatively recently; we don't know when, and possibly it
  2271. # has never been made official. Richard P Hunt, in "Islam city yielding to
  2272. # modern times", New York Times (1961-04-09), p 20, wrote that only airlines
  2273. # observed standard time, and that people in Jeddah mostly observed quasi-solar
  2274. # time, doing so by setting their watches at sunrise to 6 o'clock (or to 12
  2275. # o'clock for "Arab" time).
  2276. #
  2277. # The TZ database cannot represent quasi-solar time; airline time is the best
  2278. # we can do. The 1946 foreign air news digest of the U.S. Civil Aeronautics
  2279. # Board (OCLC 42299995) reported that the "... Arabian Government, inaugurated
  2280. # a weekly Dhahran-Cairo service, via the Saudi Arabian cities of Riyadh and
  2281. # Jidda, on March 14, 1947". Shanks & Pottenger guessed 1950; go with the
  2282. # earlier date.
  2283. #
  2284. # Shanks & Pottenger also state that until 1968-05-01 Saudi Arabia had two
  2285. # time zones; the other zone, at UTC+4, was in the far eastern part of
  2286. # the country. Ignore this, as it's before our 1970 cutoff.
  2287. #
  2288. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  2289. Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14
  2290. 3:00 - AST
  2291. Link Asia/Riyadh Asia/Aden # Yemen
  2292. Link Asia/Riyadh Asia/Kuwait
  2293. # Singapore
  2294. # taken from Mok Ly Yng (2003-10-30)
  2295. # http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html
  2296. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  2297. Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1
  2298. 6:55:25 - SMT 1905 Jun 1 # Singapore M.T.
  2299. 7:00 - MALT 1933 Jan 1 # Malaya Time
  2300. 7:00 0:20 MALST 1936 Jan 1
  2301. 7:20 - MALT 1941 Sep 1
  2302. 7:30 - MALT 1942 Feb 16
  2303. 9:00 - JST 1945 Sep 12
  2304. 7:30 - MALT 1965 Aug 9 # independence
  2305. 7:30 - SGT 1982 Jan 1 # Singapore Time
  2306. 8:00 - SGT
  2307. # Spratly Is
  2308. # no information
  2309. # Sri Lanka
  2310. # From Paul Eggert (2013-02-21):
  2311. # Milne says "Madras mean time use from May 1, 1898. Prior to this Colombo
  2312. # mean time, 5h. 4m. 21.9s. F., was used." But 5:04:21.9 differs considerably
  2313. # from Colombo's meridian 5:19:24, so for now ignore Milne and stick with
  2314. # Shanks and Pottenger.
  2315. # From Paul Eggert (1996-09-03):
  2316. # "Sri Lanka advances clock by an hour to avoid blackout"
  2317. # (<http://www.virtual-pc.com/lankaweb/news/items/240596-2.html>, 1996-05-24,
  2318. # no longer available as of 1999-08-17)
  2319. # reported "the country's standard time will be put forward by one hour at
  2320. # midnight Friday (1830 GMT) 'in the light of the present power crisis'."
  2321. #
  2322. # From Dharmasiri Senanayake, Sri Lanka Media Minister (1996-10-24), as quoted
  2323. # by Shamindra in Daily News - Hot News Section
  2324. # <news:54rka5$m5h@mtinsc01-mgt.ops.worldnet.att.net> (1996-10-26):
  2325. # With effect from 12.30 a.m. on 26th October 1996
  2326. # Sri Lanka will be six (06) hours ahead of GMT.
  2327. # From Jesper Nørgaard Welen (2006-04-14), quoting Sri Lanka News Online
  2328. # <http://news.sinhalaya.com/wmview.php?ArtID=11002> (2006-04-13):
  2329. # 0030 hrs on April 15, 2006 (midnight of April 14, 2006 +30 minutes)
  2330. # at present, become 2400 hours of April 14, 2006 (midnight of April 14, 2006).
  2331. # From Peter Apps and Ranga Sirila of Reuters (2006-04-12) in:
  2332. # http://today.reuters.co.uk/news/newsArticle.aspx?type=scienceNews&storyID=2006-04-12T172228Z_01_COL295762_RTRIDST_0_SCIENCE-SRILANKA-TIME-DC.XML
  2333. # [The Tamil Tigers] never accepted the original 1996 time change and simply
  2334. # kept their clocks set five and a half hours ahead of Greenwich Mean
  2335. # Time (GMT), in line with neighbor India.
  2336. # From Paul Eggert (2006-04-18):
  2337. # People who live in regions under Tamil control can use [TZ='Asia/Kolkata'],
  2338. # as that zone has agreed with the Tamil areas since our cutoff date of 1970.
  2339. # From K Sethu (2006-04-25):
  2340. # I think the abbreviation LKT originated from the world of computers at
  2341. # the time of or subsequent to the time zone changes by SL Government
  2342. # twice in 1996 and probably SL Government or its standardization
  2343. # agencies never declared an abbreviation as a national standard.
  2344. #
  2345. # I recollect before the recent change the government announcements
  2346. # mentioning it as simply changing Sri Lanka Standard Time or Sri Lanka
  2347. # Time and no mention was made about the abbreviation.
  2348. #
  2349. # If we look at Sri Lanka Department of Government's "Official News
  2350. # Website of Sri Lanka" ... http://www.news.lk/ we can see that they
  2351. # use SLT as abbreviation in time stamp at the beginning of each news
  2352. # item....
  2353. #
  2354. # Within Sri Lanka I think LKT is well known among computer users and
  2355. # administrators. In my opinion SLT may not be a good choice because the
  2356. # nation's largest telcom / internet operator Sri Lanka Telcom is well
  2357. # known by that abbreviation - simply as SLT (there IP domains are
  2358. # slt.lk and sltnet.lk).
  2359. #
  2360. # But if indeed our government has adopted SLT as standard abbreviation
  2361. # (that we have not known so far) then it is better that it be used for
  2362. # all computers.
  2363. # From Paul Eggert (2006-04-25):
  2364. # One possibility is that we wait for a bit for the dust to settle down
  2365. # and then see what people actually say in practice.
  2366. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  2367. Zone Asia/Colombo 5:19:24 - LMT 1880
  2368. 5:19:32 - MMT 1906 # Moratuwa Mean Time
  2369. 5:30 - IST 1942 Jan 5
  2370. 5:30 0:30 IHST 1942 Sep
  2371. 5:30 1:00 IST 1945 Oct 16 2:00
  2372. 5:30 - IST 1996 May 25 0:00
  2373. 6:30 - LKT 1996 Oct 26 0:30
  2374. 6:00 - LKT 2006 Apr 15 0:30
  2375. 5:30 - IST
  2376. # Syria
  2377. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  2378. Rule Syria 1920 1923 - Apr Sun>=15 2:00 1:00 S
  2379. Rule Syria 1920 1923 - Oct Sun>=1 2:00 0 -
  2380. Rule Syria 1962 only - Apr 29 2:00 1:00 S
  2381. Rule Syria 1962 only - Oct 1 2:00 0 -
  2382. Rule Syria 1963 1965 - May 1 2:00 1:00 S
  2383. Rule Syria 1963 only - Sep 30 2:00 0 -
  2384. Rule Syria 1964 only - Oct 1 2:00 0 -
  2385. Rule Syria 1965 only - Sep 30 2:00 0 -
  2386. Rule Syria 1966 only - Apr 24 2:00 1:00 S
  2387. Rule Syria 1966 1976 - Oct 1 2:00 0 -
  2388. Rule Syria 1967 1978 - May 1 2:00 1:00 S
  2389. Rule Syria 1977 1978 - Sep 1 2:00 0 -
  2390. Rule Syria 1983 1984 - Apr 9 2:00 1:00 S
  2391. Rule Syria 1983 1984 - Oct 1 2:00 0 -
  2392. Rule Syria 1986 only - Feb 16 2:00 1:00 S
  2393. Rule Syria 1986 only - Oct 9 2:00 0 -
  2394. Rule Syria 1987 only - Mar 1 2:00 1:00 S
  2395. Rule Syria 1987 1988 - Oct 31 2:00 0 -
  2396. Rule Syria 1988 only - Mar 15 2:00 1:00 S
  2397. Rule Syria 1989 only - Mar 31 2:00 1:00 S
  2398. Rule Syria 1989 only - Oct 1 2:00 0 -
  2399. Rule Syria 1990 only - Apr 1 2:00 1:00 S
  2400. Rule Syria 1990 only - Sep 30 2:00 0 -
  2401. Rule Syria 1991 only - Apr 1 0:00 1:00 S
  2402. Rule Syria 1991 1992 - Oct 1 0:00 0 -
  2403. Rule Syria 1992 only - Apr 8 0:00 1:00 S
  2404. Rule Syria 1993 only - Mar 26 0:00 1:00 S
  2405. Rule Syria 1993 only - Sep 25 0:00 0 -
  2406. # IATA SSIM (1998-02) says 1998-04-02;
  2407. # (1998-09) says 1999-03-29 and 1999-09-29; (1999-02) says 1999-04-02,
  2408. # 2000-04-02, and 2001-04-02; (1999-09) says 2000-03-31 and 2001-03-31;
  2409. # (2006) says 2006-03-31 and 2006-09-22;
  2410. # for now ignore all these claims and go with Shanks & Pottenger,
  2411. # except for the 2006-09-22 claim (which seems right for Ramadan).
  2412. Rule Syria 1994 1996 - Apr 1 0:00 1:00 S
  2413. Rule Syria 1994 2005 - Oct 1 0:00 0 -
  2414. Rule Syria 1997 1998 - Mar lastMon 0:00 1:00 S
  2415. Rule Syria 1999 2006 - Apr 1 0:00 1:00 S
  2416. # From Stephen Colebourne (2006-09-18):
  2417. # According to IATA data, Syria will change DST on 21st September [21:00 UTC]
  2418. # this year [only].... This is probably related to Ramadan, like Egypt.
  2419. Rule Syria 2006 only - Sep 22 0:00 0 -
  2420. # From Paul Eggert (2007-03-29):
  2421. # Today the AP reported "Syria will switch to summertime at midnight Thursday."
  2422. # http://www.iht.com/articles/ap/2007/03/29/africa/ME-GEN-Syria-Time-Change.php
  2423. Rule Syria 2007 only - Mar lastFri 0:00 1:00 S
  2424. # From Jesper Nørgaard (2007-10-27):
  2425. # The sister center ICARDA of my work CIMMYT is confirming that Syria DST will
  2426. # not take place 1st November at 0:00 o'clock but 1st November at 24:00 or
  2427. # rather Midnight between Thursday and Friday. This does make more sense than
  2428. # having it between Wednesday and Thursday (two workdays in Syria) since the
  2429. # weekend in Syria is not Saturday and Sunday, but Friday and Saturday. So now
  2430. # it is implemented at midnight of the last workday before weekend...
  2431. #
  2432. # From Steffen Thorsen (2007-10-27):
  2433. # Jesper Nørgaard Welen wrote:
  2434. #
  2435. # > "Winter local time in Syria will be observed at midnight of Thursday 1
  2436. # > November 2007, and the clock will be put back 1 hour."
  2437. #
  2438. # I found confirmation on this in this gov.sy-article (Arabic):
  2439. # http://wehda.alwehda.gov.sy/_print_veiw.asp?FileName=12521710520070926111247
  2440. #
  2441. # which using Google's translate tools says:
  2442. # Council of Ministers also approved the commencement of work on
  2443. # identifying the winter time as of Friday, 2/11/2007 where the 60th
  2444. # minute delay at midnight Thursday 1/11/2007.
  2445. Rule Syria 2007 only - Nov Fri>=1 0:00 0 -
  2446. # From Stephen Colebourne (2008-03-17):
  2447. # For everyone's info, I saw an IATA time zone change for [Syria] for
  2448. # this month (March 2008) in the last day or so....
  2449. # Country Time Standard --- DST Start --- --- DST End --- DST
  2450. # Name Zone Variation Time Date Time Date
  2451. # Variation
  2452. # Syrian Arab
  2453. # Republic SY +0200 2200 03APR08 2100 30SEP08 +0300
  2454. # 2200 02APR09 2100 30SEP09 +0300
  2455. # 2200 01APR10 2100 30SEP10 +0300
  2456. # From Arthur David Olson (2008-03-17):
  2457. # Here's a link to English-language coverage by the Syrian Arab News
  2458. # Agency (SANA)...
  2459. # http://www.sana.sy/eng/21/2008/03/11/165173.htm
  2460. # ...which reads (in part) "The Cabinet approved the suggestion of the
  2461. # Ministry of Electricity to begin daylight savings time on Friday April
  2462. # 4th, advancing clocks one hour ahead on midnight of Thursday April 3rd."
  2463. # Since Syria is two hours east of UTC, the 2200 and 2100 transition times
  2464. # shown above match up with midnight in Syria.
  2465. # From Arthur David Olson (2008-03-18):
  2466. # My best guess at a Syrian rule is "the Friday nearest April 1";
  2467. # coding that involves either using a "Mar Fri>=29" construct that old time zone
  2468. # compilers can't handle or having multiple Rules (a la Israel).
  2469. # For now, use "Apr Fri>=1", and go with IATA on a uniform Sep 30 end.
  2470. # From Steffen Thorsen (2008-10-07):
  2471. # Syria has now officially decided to end DST on 2008-11-01 this year,
  2472. # according to the following article in the Syrian Arab News Agency (SANA).
  2473. #
  2474. # The article is in Arabic, and seems to tell that they will go back to
  2475. # winter time on 2008-11-01 at 00:00 local daylight time (delaying/setting
  2476. # clocks back 60 minutes).
  2477. #
  2478. # http://sana.sy/ara/2/2008/10/07/195459.htm
  2479. # From Steffen Thorsen (2009-03-19):
  2480. # Syria will start DST on 2009-03-27 00:00 this year according to many sources,
  2481. # two examples:
  2482. #
  2483. # http://www.sana.sy/eng/21/2009/03/17/217563.htm
  2484. # (English, Syrian Arab News # Agency)
  2485. # http://thawra.alwehda.gov.sy/_View_news2.asp?FileName=94459258720090318012209
  2486. # (Arabic, gov-site)
  2487. #
  2488. # We have not found any sources saying anything about when DST ends this year.
  2489. #
  2490. # Our summary
  2491. # http://www.timeanddate.com/news/time/syria-dst-starts-march-27-2009.html
  2492. # From Steffen Thorsen (2009-10-27):
  2493. # The Syrian Arab News Network on 2009-09-29 reported that Syria will
  2494. # revert back to winter (standard) time on midnight between Thursday
  2495. # 2009-10-29 and Friday 2009-10-30:
  2496. # http://www.sana.sy/ara/2/2009/09/29/247012.htm (Arabic)
  2497. # From Arthur David Olson (2009-10-28):
  2498. # We'll see if future DST switching times turn out to be end of the last
  2499. # Thursday of the month or the start of the last Friday of the month or
  2500. # something else. For now, use the start of the last Friday.
  2501. # From Steffen Thorsen (2010-03-17):
  2502. # The "Syrian News Station" reported on 2010-03-16 that the Council of
  2503. # Ministers has decided that Syria will start DST on midnight Thursday
  2504. # 2010-04-01: (midnight between Thursday and Friday):
  2505. # http://sns.sy/sns/?path=news/read/11421 (Arabic)
  2506. # From Steffen Thorsen (2012-03-26):
  2507. # Today, Syria's government announced that they will start DST early on Friday
  2508. # (00:00). This is a bit earlier than the past two years.
  2509. #
  2510. # From Syrian Arab News Agency, in Arabic:
  2511. # http://www.sana.sy/ara/2/2012/03/26/408215.htm
  2512. #
  2513. # Our brief summary:
  2514. # http://www.timeanddate.com/news/time/syria-dst-2012.html
  2515. # From Arthur David Olson (2012-03-27):
  2516. # Assume last Friday in March going forward XXX.
  2517. Rule Syria 2008 only - Apr Fri>=1 0:00 1:00 S
  2518. Rule Syria 2008 only - Nov 1 0:00 0 -
  2519. Rule Syria 2009 only - Mar lastFri 0:00 1:00 S
  2520. Rule Syria 2010 2011 - Apr Fri>=1 0:00 1:00 S
  2521. Rule Syria 2012 max - Mar lastFri 0:00 1:00 S
  2522. Rule Syria 2009 max - Oct lastFri 0:00 0 -
  2523. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  2524. Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq
  2525. 2:00 Syria EE%sT
  2526. # Tajikistan
  2527. # From Shanks & Pottenger.
  2528. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  2529. Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2
  2530. 5:00 - DUST 1930 Jun 21 # Dushanbe Time
  2531. 6:00 RussiaAsia DUS%sT 1991 Mar 31 2:00s
  2532. 5:00 1:00 DUSST 1991 Sep 9 2:00s
  2533. 5:00 - TJT # Tajikistan Time
  2534. # Thailand
  2535. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  2536. Zone Asia/Bangkok 6:42:04 - LMT 1880
  2537. 6:42:04 - BMT 1920 Apr # Bangkok Mean Time
  2538. 7:00 - ICT
  2539. Link Asia/Bangkok Asia/Phnom_Penh # Cambodia
  2540. Link Asia/Bangkok Asia/Vientiane # Laos
  2541. # Turkmenistan
  2542. # From Shanks & Pottenger.
  2543. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  2544. Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad
  2545. 4:00 - ASHT 1930 Jun 21 # Ashkhabad Time
  2546. 5:00 RussiaAsia ASH%sT 1991 Mar 31 2:00
  2547. 4:00 RussiaAsia ASH%sT 1991 Oct 27 # independence
  2548. 4:00 RussiaAsia TM%sT 1992 Jan 19 2:00
  2549. 5:00 - TMT
  2550. # United Arab Emirates
  2551. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  2552. Zone Asia/Dubai 3:41:12 - LMT 1920
  2553. 4:00 - GST
  2554. Link Asia/Dubai Asia/Muscat # Oman
  2555. # Uzbekistan
  2556. # Byalokoz 1919 says Uzbekistan was 4:27:53.
  2557. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  2558. Zone Asia/Samarkand 4:27:53 - LMT 1924 May 2
  2559. 4:00 - SAMT 1930 Jun 21 # Samarkand Time
  2560. 5:00 - SAMT 1981 Apr 1
  2561. 5:00 1:00 SAMST 1981 Oct 1
  2562. 6:00 - TAST 1982 Apr 1 # Tashkent Time
  2563. 5:00 RussiaAsia SAM%sT 1991 Sep 1 # independence
  2564. 5:00 RussiaAsia UZ%sT 1992
  2565. 5:00 - UZT
  2566. # Milne says Tashkent was 4:37:10.8; round to nearest.
  2567. Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2
  2568. 5:00 - TAST 1930 Jun 21 # Tashkent Time
  2569. 6:00 RussiaAsia TAS%sT 1991 Mar 31 2:00
  2570. 5:00 RussiaAsia TAS%sT 1991 Sep 1 # independence
  2571. 5:00 RussiaAsia UZ%sT 1992
  2572. 5:00 - UZT
  2573. # Vietnam
  2574. # From Paul Eggert (2014-10-04):
  2575. # Milne gives 7:16:56 for the meridian of Saigon in 1899, as being
  2576. # used in Lower Laos, Cambodia, and Annam. But this is quite a ways
  2577. # from Saigon's location. For now, ignore this and stick with Shanks
  2578. # and Pottenger for LMT before 1906.
  2579. # From Arthur David Olson (2008-03-18):
  2580. # The English-language name of Vietnam's most populous city is "Ho Chi Minh
  2581. # City"; use Ho_Chi_Minh below to avoid a name of more than 14 characters.
  2582. # From Paul Eggert (2014-10-21) after a heads-up from Trần Ngọc Quân:
  2583. # Trần Tiến Bình's authoritative book "Lịch Việt Nam: thế kỷ XX-XXI (1901-2100)"
  2584. # (Nhà xuất bản Văn Hoá - Thông Tin, Hanoi, 2005), pp 49-50,
  2585. # is quoted verbatim in:
  2586. # http://www.thoigian.com.vn/?mPage=P80D01
  2587. # is translated by Brian Inglis in:
  2588. # http://mm.icann.org/pipermail/tz/2014-October/021654.html
  2589. # and is the basis for the information below.
  2590. #
  2591. # The 1906 transition was effective July 1 and standardized Indochina to
  2592. # Phù Liễn Observatory, legally 104 deg. 17'17" east of Paris.
  2593. # It's unclear whether this meant legal Paris Mean Time (00:09:21) or
  2594. # the Paris Meridian (2 deg. 20'14.03" E); the former yields 07:06:30.1333...
  2595. # and the latter 07:06:29.333... so either way it rounds to 07:06:30,
  2596. # which is used below even though the modern-day Phù Liễn Observatory
  2597. # is closer to 07:06:31. Abbreviate Phù Liễn Mean Time as PLMT.
  2598. #
  2599. # The following transitions occurred in Indochina in general (before 1954)
  2600. # and in South Vietnam in particular (after 1954):
  2601. # To 07:00 on 1911-05-01.
  2602. # To 08:00 on 1942-12-31 at 23:00.
  2603. # To 09:00 in 1945-03-14 at 23:00.
  2604. # To 07:00 on 1945-09-02 in Vietnam.
  2605. # To 08:00 on 1947-04-01 in French-controlled Indochina.
  2606. # To 07:00 on 1955-07-01 in South Vietnam.
  2607. # To 08:00 on 1959-12-31 at 23:00 in South Vietnam.
  2608. # To 07:00 on 1975-06-13 in South Vietnam.
  2609. #
  2610. # Trần cites the following sources; it's unclear which supplied the info above.
  2611. #
  2612. # Hoàng Xuân Hãn: "Lịch và lịch Việt Nam". Tập san Khoa học Xã hội,
  2613. # No. 9, Paris, February 1982.
  2614. #
  2615. # Lê Thành Lân: "Lịch và niên biểu lịch sử hai mươi thế kỷ (0001-2010)",
  2616. # NXB Thống kê, Hanoi, 2000.
  2617. #
  2618. # Lê Thành Lân: "Lịch hai thế kỷ (1802-2010) và các lịch vĩnh cửu",
  2619. # NXB Thuận Hoá, Huế, 1995.
  2620. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  2621. Zone Asia/Ho_Chi_Minh 7:06:40 - LMT 1906 Jul 1
  2622. 7:06:30 - PLMT 1911 May 1
  2623. 7:00 - ICT 1942 Dec 31 23:00
  2624. 8:00 - IDT 1945 Mar 14 23:00
  2625. 9:00 - JST 1945 Sep 2
  2626. 7:00 - ICT 1947 Apr 1
  2627. 8:00 - IDT 1955 Jul 1
  2628. 7:00 - ICT 1959 Dec 31 23:00
  2629. 8:00 - IDT 1975 Jun 13
  2630. 7:00 - ICT
  2631. # Yemen
  2632. # See Asia/Riyadh.