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- # This file is in the public domain, so clarified as of
- # 2009-05-17 by Arthur David Olson.
- # This file is by no means authoritative; if you think you know better,
- # go ahead and edit the file (and please send any changes to
- # tz@iana.org for general use in the future). For more, please see
- # the file CONTRIBUTING in the tz distribution.
- # From Paul Eggert (2015-08-08):
- #
- # Unless otherwise specified, the source for data through 1990 is:
- # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
- # San Diego: ACS Publications, Inc. (2003).
- # Unfortunately this book contains many errors and cites no sources.
- #
- # Gwillim Law writes that a good source
- # for recent time zone data is the International Air Transport
- # Association's Standard Schedules Information Manual (IATA SSIM),
- # published semiannually. Law sent in several helpful summaries
- # of the IATA's data after 1990. Except where otherwise noted,
- # IATA SSIM is the source for entries after 1990.
- #
- # Another source occasionally used is Edward W. Whitman, World Time Differences,
- # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
- # I found in the UCLA library.
- #
- # For data circa 1899, a common source is:
- # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
- # http://www.jstor.org/stable/1774359
- #
- # For Russian data circa 1919, a source is:
- # Byalokoz EL. New Counting of Time in Russia since July 1, 1919.
- # (See the 'europe' file for a fuller citation.)
- #
- # A reliable and entertaining source about time zones is
- # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
- #
- # I invented the abbreviations marked '*' in the following table;
- # the rest are from earlier versions of this file, or from other sources.
- # Corrections are welcome!
- # std dst
- # LMT Local Mean Time
- # 2:00 EET EEST Eastern European Time
- # 2:00 IST IDT Israel
- # 3:00 AST ADT Arabia*
- # 3:30 IRST IRDT Iran*
- # 4:00 GST Gulf*
- # 5:30 IST India
- # 7:00 ICT Indochina, most times and locations*
- # 7:00 WIB west Indonesia (Waktu Indonesia Barat)
- # 8:00 WITA central Indonesia (Waktu Indonesia Tengah)
- # 8:00 CST China
- # 8:00 IDT Indochina, 1943-45, 1947-55, 1960-75 (some locations)*
- # 8:00 JWST Western Standard Time (Japan, 1896/1937)*
- # 8:30 KST KDT Korea when at +0830*
- # 9:00 JCST Central Standard Time (Japan, 1896/1937)
- # 9:00 WIT east Indonesia (Waktu Indonesia Timur)
- # 9:00 JST JDT Japan
- # 9:00 KST KDT Korea when at +09
- # 9:30 ACST Australian Central Standard Time
- #
- # See the 'europe' file for Russia and Turkey in Asia.
- # From Guy Harris:
- # Incorporates data for Singapore from Robert Elz' asia 1.1, as well as
- # additional information from Tom Yap, Sun Microsystems Intercontinental
- # Technical Support (including a page from the Official Airline Guide -
- # Worldwide Edition). The names for time zones are guesses.
- ###############################################################################
- # These rules are stolen from the 'europe' file.
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule EUAsia 1981 max - Mar lastSun 1:00u 1:00 S
- Rule EUAsia 1979 1995 - Sep lastSun 1:00u 0 -
- Rule EUAsia 1996 max - Oct lastSun 1:00u 0 -
- Rule E-EurAsia 1981 max - Mar lastSun 0:00 1:00 S
- Rule E-EurAsia 1979 1995 - Sep lastSun 0:00 0 -
- Rule E-EurAsia 1996 max - Oct lastSun 0:00 0 -
- Rule RussiaAsia 1981 1984 - Apr 1 0:00 1:00 S
- Rule RussiaAsia 1981 1983 - Oct 1 0:00 0 -
- Rule RussiaAsia 1984 1991 - Sep lastSun 2:00s 0 -
- Rule RussiaAsia 1985 1991 - Mar lastSun 2:00s 1:00 S
- Rule RussiaAsia 1992 only - Mar lastSat 23:00 1:00 S
- Rule RussiaAsia 1992 only - Sep lastSat 23:00 0 -
- Rule RussiaAsia 1993 max - Mar lastSun 2:00s 1:00 S
- Rule RussiaAsia 1993 1995 - Sep lastSun 2:00s 0 -
- Rule RussiaAsia 1996 max - Oct lastSun 2:00s 0 -
- # Afghanistan
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Kabul 4:36:48 - LMT 1890
- 4:00 - AFT 1945
- 4:30 - AFT
- # Armenia
- # From Paul Eggert (2006-03-22):
- # Shanks & Pottenger have Yerevan switching to 3:00 (with Russian DST)
- # in spring 1991, then to 4:00 with no DST in fall 1995, then
- # readopting Russian DST in 1997. Go with Shanks & Pottenger, even
- # when they disagree with others. Edgar Der-Danieliantz
- # reported (1996-05-04) that Yerevan probably wouldn't use DST
- # in 1996, though it did use DST in 1995. IATA SSIM (1991/1998) reports that
- # Armenia switched from 3:00 to 4:00 in 1998 and observed DST after 1991,
- # but started switching at 3:00s in 1998.
- # From Arthur David Olson (2011-06-15):
- # While Russia abandoned DST in 2011, Armenia may choose to
- # follow Russia's "old" rules.
- # From Alexander Krivenyshev (2012-02-10):
- # According to News Armenia, on Feb 9, 2012,
- # http://newsarmenia.ru/society/20120209/42609695.html
- #
- # The Armenia National Assembly adopted final reading of Amendments to the
- # Law "On procedure of calculation time on the territory of the Republic of
- # Armenia" according to which Armenia [is] abolishing Daylight Saving Time.
- # or
- # (brief)
- # http://www.worldtimezone.com/dst_news/dst_news_armenia03.html
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2
- 3:00 - YERT 1957 Mar # Yerevan Time
- 4:00 RussiaAsia YER%sT 1991 Mar 31 2:00s
- 3:00 1:00 YERST 1991 Sep 23 # independence
- 3:00 RussiaAsia AM%sT 1995 Sep 24 2:00s
- 4:00 - AMT 1997
- 4:00 RussiaAsia AM%sT 2012 Mar 25 2:00s
- 4:00 - AMT
- # Azerbaijan
- # From Rustam Aliyev of the Azerbaijan Internet Forum (2005-10-23):
- # According to the resolution of Cabinet of Ministers, 1997
- # From Paul Eggert (2015-09-17): It was Resolution No. 21 (1997-03-17).
- # http://code.az/files/daylight_res.pdf
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Azer 1997 max - Mar lastSun 4:00 1:00 S
- Rule Azer 1997 max - Oct lastSun 5:00 0 -
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Baku 3:19:24 - LMT 1924 May 2
- 3:00 - BAKT 1957 Mar # Baku Time
- 4:00 RussiaAsia BAK%sT 1991 Mar 31 2:00s
- 3:00 1:00 BAKST 1991 Aug 30 # independence
- 3:00 RussiaAsia AZ%sT 1992 Sep lastSat 23:00
- 4:00 - AZT 1996 # Azerbaijan Time
- 4:00 EUAsia AZ%sT 1997
- 4:00 Azer AZ%sT
- # Bahrain
- # See Asia/Qatar.
- # Bangladesh
- # From Alexander Krivenyshev (2009-05-13):
- # According to newspaper Asian Tribune (May 6, 2009) Bangladesh may introduce
- # Daylight Saving Time from June 16 to Sept 30
- #
- # Bangladesh to introduce daylight saving time likely from June 16
- # http://www.asiantribune.com/?q=node/17288
- # http://www.worldtimezone.com/dst_news/dst_news_bangladesh02.html
- #
- # "... Bangladesh government has decided to switch daylight saving time from
- # June
- # 16 till September 30 in a bid to ensure maximum use of daylight to cope with
- # crippling power crisis. "
- #
- # The switch will remain in effect from June 16 to Sept 30 (2009) but if
- # implemented the next year, it will come in force from April 1, 2010
- # From Steffen Thorsen (2009-06-02):
- # They have finally decided now, but changed the start date to midnight between
- # the 19th and 20th, and they have not set the end date yet.
- #
- # Some sources:
- # http://in.reuters.com/article/southAsiaNews/idINIndia-40017620090601
- # http://bdnews24.com/details.php?id=85889&cid=2
- #
- # Our wrap-up:
- # http://www.timeanddate.com/news/time/bangladesh-daylight-saving-2009.html
- # From A. N. M. Kamrus Saadat (2009-06-15):
- # Finally we've got the official mail regarding DST start time where DST start
- # time is mentioned as Jun 19 2009, 23:00 from BTRC (Bangladesh
- # Telecommunication Regulatory Commission).
- #
- # No DST end date has been announced yet.
- # From Alexander Krivenyshev (2009-09-25):
- # Bangladesh won't go back to Standard Time from October 1, 2009,
- # instead it will continue DST measure till the cabinet makes a fresh decision.
- #
- # Following report by same newspaper-"The Daily Star Friday":
- # "DST change awaits cabinet decision-Clock won't go back by 1-hr from Oct 1"
- # http://www.thedailystar.net/newDesign/news-details.php?nid=107021
- # http://www.worldtimezone.com/dst_news/dst_news_bangladesh04.html
- # From Steffen Thorsen (2009-10-13):
- # IANS (Indo-Asian News Service) now reports:
- # Bangladesh has decided that the clock advanced by an hour to make
- # maximum use of daylight hours as an energy saving measure would
- # "continue for an indefinite period."
- #
- # One of many places where it is published:
- # http://www.thaindian.com/newsportal/business/bangladesh-to-continue-indefinitely-with-advanced-time_100259987.html
- # From Alexander Krivenyshev (2009-12-24):
- # According to Bangladesh newspaper "The Daily Star,"
- # Bangladesh will change its clock back to Standard Time on Dec 31, 2009.
- #
- # Clock goes back 1-hr on Dec 31 night.
- # http://www.thedailystar.net/newDesign/news-details.php?nid=119228
- # http://www.worldtimezone.com/dst_news/dst_news_bangladesh05.html
- #
- # "...The government yesterday decided to put the clock back by one hour
- # on December 31 midnight and the new time will continue until March 31,
- # 2010 midnight. The decision came at a cabinet meeting at the Prime
- # Minister's Office last night..."
- # From Alexander Krivenyshev (2010-03-22):
- # According to Bangladesh newspaper "The Daily Star,"
- # Cabinet cancels Daylight Saving Time
- # http://www.thedailystar.net/newDesign/latest_news.php?nid=22817
- # http://www.worldtimezone.com/dst_news/dst_news_bangladesh06.html
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Dhaka 2009 only - Jun 19 23:00 1:00 S
- Rule Dhaka 2009 only - Dec 31 24:00 0 -
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Dhaka 6:01:40 - LMT 1890
- 5:53:20 - HMT 1941 Oct # Howrah Mean Time?
- 6:30 - BURT 1942 May 15 # Burma Time
- 5:30 - IST 1942 Sep
- 6:30 - BURT 1951 Sep 30
- 6:00 - DACT 1971 Mar 26 # Dacca Time
- 6:00 - BDT 2009
- 6:00 Dhaka BD%sT
- # Bhutan
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu
- 5:30 - IST 1987 Oct
- 6:00 - BTT # Bhutan Time
- # British Indian Ocean Territory
- # Whitman and the 1995 CIA time zone map say 5:00, but the
- # 1997 and later maps say 6:00. Assume the switch occurred in 1996.
- # We have no information as to when standard time was introduced;
- # assume it occurred in 1907, the same year as Mauritius (which
- # then contained the Chagos Archipelago).
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Indian/Chagos 4:49:40 - LMT 1907
- 5:00 - IOT 1996 # BIOT Time
- 6:00 - IOT
- # Brunei
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan
- 7:30 - BNT 1933
- 8:00 - BNT
- # Burma / Myanmar
- # Milne says 6:24:40 was the meridian of the time ball observatory at Rangoon.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Rangoon 6:24:40 - LMT 1880 # or Yangon
- 6:24:40 - RMT 1920 # Rangoon Mean Time?
- 6:30 - BURT 1942 May # Burma Time
- 9:00 - JST 1945 May 3
- 6:30 - MMT # Myanmar Time
- # Cambodia
- # See Asia/Bangkok.
- # China
- # From Guy Harris:
- # People's Republic of China. Yes, they really have only one time zone.
- # From Bob Devine (1988-01-28):
- # No they don't. See TIME mag, 1986-02-17 p.52. Even though
- # China is across 4 physical time zones, before Feb 1, 1986 only the
- # Peking (Beijing) time zone was recognized. Since that date, China
- # has two of 'em - Peking's and Ürümqi (named after the capital of
- # the Xinjiang Uyghur Autonomous Region). I don't know about DST for it.
- #
- # . . .I just deleted the DST table and this editor makes it too
- # painful to suck in another copy. So, here is what I have for
- # DST start/end dates for Peking's time zone (info from AP):
- #
- # 1986 May 4 - Sept 14
- # 1987 mid-April - ??
- # From U. S. Naval Observatory (1989-01-19):
- # CHINA 8 H AHEAD OF UTC ALL OF CHINA, INCL TAIWAN
- # CHINA 9 H AHEAD OF UTC APR 17 - SEP 10
- # From Paul Eggert (2008-02-11):
- # Jim Mann, "A clumsy embrace for another western custom: China on daylight
- # time - sort of", Los Angeles Times, 1986-05-05 ... [says] that China began
- # observing daylight saving time in 1986.
- # From Paul Eggert (2014-06-30):
- # Shanks & Pottenger have China switching to a single time zone in 1980, but
- # this doesn't seem to be correct. They also write that China observed summer
- # DST from 1986 through 1991, which seems to match the above commentary, so
- # go with them for DST rules as follows:
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Shang 1940 only - Jun 3 0:00 1:00 D
- Rule Shang 1940 1941 - Oct 1 0:00 0 S
- Rule Shang 1941 only - Mar 16 0:00 1:00 D
- Rule PRC 1986 only - May 4 0:00 1:00 D
- Rule PRC 1986 1991 - Sep Sun>=11 0:00 0 S
- Rule PRC 1987 1991 - Apr Sun>=10 0:00 1:00 D
- # From Anthony Fok (2001-12-20):
- # BTW, I did some research on-line and found some info regarding these five
- # historic timezones from some Taiwan websites. And yes, there are official
- # Chinese names for these locales (before 1949).
- #
- # From Jesper Nørgaard Welen (2006-07-14):
- # I have investigated the timezones around 1970 on the
- # http://www.astro.com/atlas site [with provinces and county
- # boundaries summarized below].... A few other exceptions were two
- # counties on the Sichuan side of the Xizang-Sichuan border,
- # counties Dege and Baiyu which lies on the Sichuan side and are
- # therefore supposed to be GMT+7, Xizang region being GMT+6, but Dege
- # county is GMT+8 according to astro.com while Baiyu county is GMT+6
- # (could be true), for the moment I am assuming that those two
- # counties are mistakes in the astro.com data.
- # From Paul Eggert (2014-06-30):
- # Alois Treindl kindly sent me translations of the following two sources:
- #
- # (1)
- # Guo Qingsheng (National Time-Service Center, CAS, Xi'an 710600, China)
- # Beijing Time at the Beginning of the PRC
- # China Historical Materials of Science and Technology
- # (Zhongguo ke ji shi liao, 中国科技史料), Vol. 24, No. 1 (2003)
- # It gives evidence that at the beginning of the PRC, Beijing time was
- # officially apparent solar time! However, Guo also says that the
- # evidence is dubious, as the relevant institute of astronomy had not
- # been taken over by the PRC yet. It's plausible that apparent solar
- # time was announced but never implemented, and that people continued
- # to use UT+8. As the Shanghai radio station (and I presume the
- # observatory) was still under control of French missionaries, it
- # could well have ignored any such mandate.
- #
- # (2)
- # Guo Qing-sheng (Shaanxi Astronomical Observatory, CAS, Xi'an 710600, China)
- # A Study on the Standard Time Changes for the Past 100 Years in China
- # [undated and unknown publication location]
- # It says several things:
- # * The Qing dynasty used local apparent solar time throughout China.
- # * The Republic of China instituted Beijing mean solar time effective
- # the official calendar book of 1914.
- # * The French Concession in Shanghai set up signal stations in
- # French docks in the 1890s, controlled by Xujiahui (Zikawei)
- # Observatory and set to local mean time.
- # * "From the end of the 19th century" it changed to UT+8.
- # * Chinese Customs (by then reduced to a tool of foreign powers)
- # eventually standardized on this time for all ports, and it
- # became used by railways as well.
- # * In 1918 the Central Observatory proposed dividing China into
- # five time zones (see below for details). This caught on
- # at first only in coastal areas observing UT+8.
- # * During WWII all of China was in theory was at UT+7. In practice
- # this was ignored in the west, and I presume was ignored in
- # Japanese-occupied territory.
- # * Japanese-occupied Manchuria was at UT+9, i.e., Japan time.
- # * The five-zone plan was resurrected after WWII and officially put into
- # place (with some modifications) in March 1948. It's not clear
- # how well it was observed in areas under Nationalist control.
- # * The People's Liberation Army used UT+8 during the civil war.
- #
- # An AP article "Shanghai Internat'l Area Little Changed" in the
- # Lewiston (ME) Daily Sun (1939-05-29), p 17, said "Even the time is
- # different - the occupied districts going by Tokyo time, an hour
- # ahead of that prevailing in the rest of Shanghai." Guess that the
- # Xujiahui Observatory was under French control and stuck with UT+8.
- #
- # In earlier versions of this file, China had many separate Zone entries, but
- # this was based on what were apparently incorrect data in Shanks & Pottenger.
- # This has now been simplified to the two entries Asia/Shanghai and
- # Asia/Urumqi, with the others being links for backward compatibility.
- # Proposed in 1918 and theoretically in effect until 1949 (although in practice
- # mainly observed in coastal areas), the five zones were:
- #
- # Changbai Time ("Long-white Time", Long-white = Heilongjiang area) UT+8.5
- # Asia/Harbin (currently a link to Asia/Shanghai)
- # Heilongjiang (except Mohe county), Jilin
- #
- # Zhongyuan Time ("Central plain Time") UT+8
- # Asia/Shanghai
- # most of China
- # This currently represents most other zones as well,
- # as apparently these regions have been the same since 1970.
- # Milne gives 8:05:43.2 for Xujiahui Observatory time; round to nearest.
- # Guo says Shanghai switched to UT+8 "from the end of the 19th century".
- #
- # Long-shu Time (probably due to Long and Shu being two names of that area) UT+7
- # Asia/Chongqing (currently a link to Asia/Shanghai)
- # Guangxi, Guizhou, Hainan, Ningxia, Sichuan, Shaanxi, and Yunnan;
- # most of Gansu; west Inner Mongolia; west Qinghai; and the Guangdong
- # counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing,
- # Yangchun, Yangjiang, Yu'nan, and Yunfu.
- #
- # Xin-zang Time ("Xinjiang-Tibet Time") UT+6
- # Asia/Urumqi
- # This currently represents Kunlun Time as well,
- # as apparently the two regions have been the same since 1970.
- # The Gansu counties Aksay, Anxi, Dunhuang, Subei; west Qinghai;
- # the Guangdong counties Xuwen, Haikang, Suixi, Lianjiang,
- # Zhanjiang, Wuchuan, Huazhou, Gaozhou, Maoming, Dianbai, and Xinyi;
- # east Tibet, including Lhasa, Chamdo, Shigaise, Jimsar, Shawan and Hutubi;
- # east Xinjiang, including Ürümqi, Turpan, Karamay, Korla, Minfeng, Jinghe,
- # Wusu, Qiemo, Xinyan, Wulanwusu, Jinghe, Yumin, Tacheng, Tuoli, Emin,
- # Shihezi, Changji, Yanqi, Heshuo, Tuokexun, Tulufan, Shanshan, Hami,
- # Fukang, Kuitun, Kumukuli, Miquan, Qitai, and Turfan.
- #
- # Kunlun Time UT+5.5
- # Asia/Kashgar (currently a link to Asia/Urumqi)
- # West Tibet, including Pulan, Aheqi, Shufu, Shule;
- # West Xinjiang, including Aksu, Atushi, Yining, Hetian, Cele, Luopu, Nileke,
- # Zhaosu, Tekesi, Gongliu, Chabuchaer, Huocheng, Bole, Pishan, Suiding,
- # and Yarkand.
- # From Luther Ma (2009-10-17):
- # Almost all (>99.9%) ethnic Chinese (properly ethnic Han) living in
- # Xinjiang use Chinese Standard Time. Some are aware of Xinjiang time,
- # but have no need of it. All planes, trains, and schools function on
- # what is called "Beijing time." When Han make an appointment in Chinese
- # they implicitly use Beijing time.
- #
- # On the other hand, ethnic Uyghurs, who make up about half the
- # population of Xinjiang, typically use "Xinjiang time" which is two
- # hours behind Beijing time, or UTC +0600. The government of the Xinjiang
- # Uyghur Autonomous Region, (XAUR, or just Xinjiang for short) as well as
- # local governments such as the Ürümqi city government use both times in
- # publications, referring to what is popularly called Xinjiang time as
- # "Ürümqi time." When Uyghurs make an appointment in the Uyghur language
- # they almost invariably use Xinjiang time.
- #
- # (Their ethnic Han compatriots would typically have no clue of its
- # widespread use, however, because so extremely few of them are fluent in
- # Uyghur, comparable to the number of Anglo-Americans fluent in Navajo.)
- #
- # (...As with the rest of China there was a brief interval ending in 1990
- # or 1991 when summer time was in use. The confusion was severe, with
- # the province not having dual times but four times in use at the same
- # time. Some areas remained on standard Xinjiang time or Beijing time and
- # others moving their clocks ahead.)
- # From Luther Ma (2009-11-19):
- # With the risk of being redundant to previous answers these are the most common
- # English "transliterations" (w/o using non-English symbols):
- #
- # 1. Wulumuqi...
- # 2. Kashi...
- # 3. Urumqi...
- # 4. Kashgar...
- # ...
- # 5. It seems that Uyghurs in Ürümqi has been using Xinjiang since at least the
- # 1960's. I know of one Han, now over 50, who grew up in the surrounding
- # countryside and used Xinjiang time as a child.
- #
- # 6. Likewise for Kashgar and the rest of south Xinjiang I don't know of any
- # start date for Xinjiang time.
- #
- # Without having access to local historical records, nor the ability to legally
- # publish them, I would go with October 1, 1949, when Xinjiang became the Uyghur
- # Autonomous Region under the PRC. (Before that Uyghurs, of course, would also
- # not be using Beijing time, but some local time.)
- # From David Cochrane (2014-03-26):
- # Just a confirmation that Ürümqi time was implemented in Ürümqi on 1 Feb 1986:
- # http://content.time.com/time/magazine/article/0,9171,960684,00.html
- # From Luther Ma (2014-04-22):
- # I have interviewed numerous people of various nationalities and from
- # different localities in Xinjiang and can confirm the information in Guo's
- # report regarding Xinjiang, as well as the Time article reference by David
- # Cochrane. Whether officially recognized or not (and both are officially
- # recognized), two separate times have been in use in Xinjiang since at least
- # the Cultural Revolution: Xinjiang Time (XJT), aka Ürümqi Time or local time;
- # and Beijing Time. There is no confusion in Xinjiang as to which name refers
- # to which time. Both are widely used in the province, although in some
- # population groups might be use one to the exclusion of the other. The only
- # problem is that computers and smart phones list Ürümqi (or Kashgar) as
- # having the same time as Beijing.
- # From Paul Eggert (2014-06-30):
- # In the early days of the PRC, Tibet was given its own time zone (UT+6) but
- # this was withdrawn in 1959 and never reinstated; see Tubten Khétsun,
- # Memories of life in Lhasa under Chinese Rule, Columbia U Press, ISBN
- # 978-0231142861 (2008), translator's introduction by Matthew Akester, p x.
- # As this is before our 1970 cutoff, Tibet doesn't need a separate zone.
- #
- # Xinjiang Time is well-documented as being officially recognized. E.g., see
- # "The Working-Calendar for The Xinjiang Uygur Autonomous Region Government"
- # <http://www.sinkiang.gov.cn/service/ourworking/> (2014-04-22).
- # Unfortunately, we have no good records of time in Xinjiang before 1986.
- # During the 20th century parts of Xinjiang were ruled by the Qing dynasty,
- # the Republic of China, various warlords, the First and Second East Turkestan
- # Republics, the Soviet Union, the Kuomintang, and the People's Republic of
- # China, and tracking down all these organizations' timekeeping rules would be
- # quite a trick. Approximate this lost history by a transition from LMT to
- # XJT at the start of 1928, the year of accession of the warlord Jin Shuren,
- # which happens to be the date given by Shanks & Pottenger (no doubt as a
- # guess) as the transition from LMT. Ignore the usage of UT+8 before
- # 1986-02-01 under the theory that the transition date to UT+8 is unknown and
- # that the sort of users who prefer Asia/Urumqi now typically ignored the
- # UT+8 mandate back then.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- # Beijing time, used throughout China; represented by Shanghai.
- Zone Asia/Shanghai 8:05:43 - LMT 1901
- 8:00 Shang C%sT 1949
- 8:00 PRC C%sT
- # Xinjiang time, used by many in western China; represented by Ürümqi / Ürümchi
- # / Wulumuqi. (Please use Asia/Shanghai if you prefer Beijing time.)
- Zone Asia/Urumqi 5:50:20 - LMT 1928
- 6:00 - XJT
- # Hong Kong (Xianggang)
- # Milne gives 7:36:41.7; round this.
- # From Lee Yiu Chung (2009-10-24):
- # I found there are some mistakes for the...DST rule for Hong
- # Kong. [According] to the DST record from Hong Kong Observatory (actually,
- # it is not [an] observatory, but the official meteorological agency of HK,
- # and also serves as the official timing agency), there are some missing
- # and incorrect rules. Although the exact switch over time is missing, I
- # think 3:30 is correct. The official DST record for Hong Kong can be
- # obtained from
- # http://www.hko.gov.hk/gts/time/Summertime.htm
- # From Arthur David Olson (2009-10-28):
- # Here are the dates given at
- # http://www.hko.gov.hk/gts/time/Summertime.htm
- # as of 2009-10-28:
- # Year Period
- # 1941 1 Apr to 30 Sep
- # 1942 Whole year
- # 1943 Whole year
- # 1944 Whole year
- # 1945 Whole year
- # 1946 20 Apr to 1 Dec
- # 1947 13 Apr to 30 Dec
- # 1948 2 May to 31 Oct
- # 1949 3 Apr to 30 Oct
- # 1950 2 Apr to 29 Oct
- # 1951 1 Apr to 28 Oct
- # 1952 6 Apr to 25 Oct
- # 1953 5 Apr to 1 Nov
- # 1954 21 Mar to 31 Oct
- # 1955 20 Mar to 6 Nov
- # 1956 18 Mar to 4 Nov
- # 1957 24 Mar to 3 Nov
- # 1958 23 Mar to 2 Nov
- # 1959 22 Mar to 1 Nov
- # 1960 20 Mar to 6 Nov
- # 1961 19 Mar to 5 Nov
- # 1962 18 Mar to 4 Nov
- # 1963 24 Mar to 3 Nov
- # 1964 22 Mar to 1 Nov
- # 1965 18 Apr to 17 Oct
- # 1966 17 Apr to 16 Oct
- # 1967 16 Apr to 22 Oct
- # 1968 21 Apr to 20 Oct
- # 1969 20 Apr to 19 Oct
- # 1970 19 Apr to 18 Oct
- # 1971 18 Apr to 17 Oct
- # 1972 16 Apr to 22 Oct
- # 1973 22 Apr to 21 Oct
- # 1973/74 30 Dec 73 to 20 Oct 74
- # 1975 20 Apr to 19 Oct
- # 1976 18 Apr to 17 Oct
- # 1977 Nil
- # 1978 Nil
- # 1979 13 May to 21 Oct
- # 1980 to Now Nil
- # The page does not give start or end times of day.
- # The page does not give a start date for 1942.
- # The page does not givw an end date for 1945.
- # The Japanese occupation of Hong Kong began on 1941-12-25.
- # The Japanese surrender of Hong Kong was signed 1945-09-15.
- # For lack of anything better, use start of those days as the transition times.
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule HK 1941 only - Apr 1 3:30 1:00 S
- Rule HK 1941 only - Sep 30 3:30 0 -
- Rule HK 1946 only - Apr 20 3:30 1:00 S
- Rule HK 1946 only - Dec 1 3:30 0 -
- Rule HK 1947 only - Apr 13 3:30 1:00 S
- Rule HK 1947 only - Dec 30 3:30 0 -
- Rule HK 1948 only - May 2 3:30 1:00 S
- Rule HK 1948 1951 - Oct lastSun 3:30 0 -
- Rule HK 1952 only - Oct 25 3:30 0 -
- Rule HK 1949 1953 - Apr Sun>=1 3:30 1:00 S
- Rule HK 1953 only - Nov 1 3:30 0 -
- Rule HK 1954 1964 - Mar Sun>=18 3:30 1:00 S
- Rule HK 1954 only - Oct 31 3:30 0 -
- Rule HK 1955 1964 - Nov Sun>=1 3:30 0 -
- Rule HK 1965 1976 - Apr Sun>=16 3:30 1:00 S
- Rule HK 1965 1976 - Oct Sun>=16 3:30 0 -
- Rule HK 1973 only - Dec 30 3:30 1:00 S
- Rule HK 1979 only - May Sun>=8 3:30 1:00 S
- Rule HK 1979 only - Oct Sun>=16 3:30 0 -
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30
- 8:00 HK HK%sT 1941 Dec 25
- 9:00 - JST 1945 Sep 15
- 8:00 HK HK%sT
- ###############################################################################
- # Taiwan
- # From smallufo (2010-04-03):
- # According to Taiwan's CWB [Central Weather Bureau],
- # http://www.cwb.gov.tw/V6/astronomy/cdata/summert.htm
- # Taipei has DST in 1979 between July 1st and Sep 30.
- # From Yu-Cheng Chuang (2013-07-12):
- # On Dec 28, 1895, the Meiji Emperor announced Ordinance No. 167 of
- # Meiji Year 28 "The clause about standard time", mentioned that
- # Taiwan and Penghu Islands, as well as Yaeyama and Miyako Islands
- # (both in Okinawa) adopt the Western Standard Time which is based on
- # 120E. The adoption began from Jan 1, 1896. The original text can be
- # found on Wikisource:
- # http://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時)
- # ... This could be the first adoption of time zone in Taiwan, because
- # during the Qing Dynasty, it seems that there was no time zone
- # declared officially.
- #
- # Later, in the beginning of World War II, on Sep 25, 1937, the Showa
- # Emperor announced Ordinance No. 529 of Showa Year 12 "The clause of
- # revision in the ordinance No. 167 of Meiji year 28 about standard
- # time", in which abolished the adoption of Western Standard Time in
- # western islands (listed above), which means the whole Japan
- # territory, including later occupations, adopt Japan Central Time
- # (UTC+9). The adoption began on Oct 1, 1937. The original text can
- # be found on Wikisource:
- # 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
- #
- # That is, the time zone of Taipei switched to UTC+9 on Oct 1, 1937.
- # From Yu-Cheng Chuang (2014-07-02):
- # I've found more evidence about when the time zone was switched from UTC+9
- # back to UTC+8 after WW2. I believe it was on Sep 21, 1945. In a document
- # during Japanese era [1] in which the officer told the staff to change time
- # zone back to Western Standard Time (UTC+8) on Sep 21. And in another
- # history page of National Cheng Kung University [2], on Sep 21 there is a
- # note "from today, switch back to Western Standard Time". From these two
- # materials, I believe that the time zone change happened on Sep 21. And
- # today I have found another monthly journal called "The Astronomical Herald"
- # from The Astronomical Society of Japan [3] in which it mentioned the fact
- # that:
- #
- # 1. Standard Time of the Country (Japan) was adopted on Jan 1, 1888, using
- # the time at 135E (GMT+9)
- #
- # 2. Standard Time of the Country was renamed to Central Standard Time, on Jan
- # 1, 1898, and on the same day, the new territories Taiwan and Penghu islands,
- # as well as Yaeyama and Miyako islands, adopted a new time zone called
- # Western Standard Time, which is in GMT+8.
- #
- # 3. Western Standard Time was deprecated on Sep 30, 1937. From then all the
- # territories of Japan adopted the same time zone, which is Central Standard
- # Time.
- #
- # [1] Academica Historica, Taiwan:
- # http://163.29.208.22:8080/govsaleShowImage/connect_img.php?s=00101738900090036&e=00101738900090037
- # [2] Nat'l Cheng Kung University 70th Anniversary Special Site:
- # http://www.ncku.edu.tw/~ncku70/menu/001/01_01.htm
- # [3] Yukio Niimi, The Standard Time in Japan (1997), p.475:
- # http://www.asj.or.jp/geppou/archive_open/1997/pdf/19971001c.pdf
- # Yu-Cheng Chuang (2014-07-03):
- # I finally have found the real official gazette about changing back to
- # Western Standard Time on Sep 21 in Taiwan. It's Taiwan Governor-General
- # Bulletin No. 386 in Showa 20 years (1945), published on Sep 19, 1945. [1] ...
- # [It] abolishes Bulletin No. 207 in Showa 12 years (1937), which is a local
- # bulletin in Taiwan for that Ordinance No. 529. It also mentioned that 1am on
- # Sep 21, 1945 will be 12am on Sep 21. I think this bulletin is much more
- # official than the one I mentioned in my first mail, because it's from the
- # top-level government in Taiwan. If you're going to quote any resource, this
- # would be a good one.
- # [1] Taiwan Governor-General Gazette, No. 1018, Sep 19, 1945:
- # http://db2.th.gov.tw/db2/view/viewImg.php?imgcode=0072031018a&num=19&bgn=019&end=019&otherImg=&type=gener
- # From Yu-Cheng Chuang (2014-07-02):
- # In 1946, DST in Taiwan was from May 15 and ended on Sep 30. The info from
- # Central Weather Bureau website was not correct.
- #
- # Original Bulletin:
- # http://subtpg.tpg.gov.tw/og/image2.asp?f=03502F0AKM1AF
- # http://subtpg.tpg.gov.tw/og/image2.asp?f=0350300AKM1B0 (cont.)
- #
- # In 1947, DST in Taiwan was expanded to Oct 31. There is a backup of that
- # telegram announcement from Taiwan Province Government:
- #
- # http://subtpg.tpg.gov.tw/og/image2.asp?f=0360310AKZ431
- #
- # Here is a brief translation:
- #
- # The Summer Time this year is adopted from midnight Apr 15 until Sep 20
- # midnight. To save (energy?) consumption, we're expanding Summer Time
- # adoption till Oct 31 midnight.
- #
- # The Central Weather Bureau website didn't mention that, however it can
- # be found from historical government announcement database.
- # From Paul Eggert (2014-07-03):
- # As per Yu-Cheng Chuang, say that Taiwan was at UT+9 from 1937-10-01
- # until 1945-09-21 at 01:00, overriding Shanks & Pottenger.
- # Likewise, use Yu-Cheng Chuang's data for DST in Taiwan.
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Taiwan 1946 only - May 15 0:00 1:00 D
- Rule Taiwan 1946 only - Oct 1 0:00 0 S
- Rule Taiwan 1947 only - Apr 15 0:00 1:00 D
- Rule Taiwan 1947 only - Nov 1 0:00 0 S
- Rule Taiwan 1948 1951 - May 1 0:00 1:00 D
- Rule Taiwan 1948 1951 - Oct 1 0:00 0 S
- Rule Taiwan 1952 only - Mar 1 0:00 1:00 D
- Rule Taiwan 1952 1954 - Nov 1 0:00 0 S
- Rule Taiwan 1953 1959 - Apr 1 0:00 1:00 D
- Rule Taiwan 1955 1961 - Oct 1 0:00 0 S
- Rule Taiwan 1960 1961 - Jun 1 0:00 1:00 D
- Rule Taiwan 1974 1975 - Apr 1 0:00 1:00 D
- Rule Taiwan 1974 1975 - Oct 1 0:00 0 S
- Rule Taiwan 1979 only - Jul 1 0:00 1:00 D
- Rule Taiwan 1979 only - Oct 1 0:00 0 S
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- # Taipei or Taibei or T'ai-pei
- Zone Asia/Taipei 8:06:00 - LMT 1896 Jan 1
- 8:00 - JWST 1937 Oct 1
- 9:00 - JST 1945 Sep 21 1:00
- 8:00 Taiwan C%sT
- # Macau (Macao, Aomen)
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Macau 1961 1962 - Mar Sun>=16 3:30 1:00 S
- Rule Macau 1961 1964 - Nov Sun>=1 3:30 0 -
- Rule Macau 1963 only - Mar Sun>=16 0:00 1:00 S
- Rule Macau 1964 only - Mar Sun>=16 3:30 1:00 S
- Rule Macau 1965 only - Mar Sun>=16 0:00 1:00 S
- Rule Macau 1965 only - Oct 31 0:00 0 -
- Rule Macau 1966 1971 - Apr Sun>=16 3:30 1:00 S
- Rule Macau 1966 1971 - Oct Sun>=16 3:30 0 -
- Rule Macau 1972 1974 - Apr Sun>=15 0:00 1:00 S
- Rule Macau 1972 1973 - Oct Sun>=15 0:00 0 -
- Rule Macau 1974 1977 - Oct Sun>=15 3:30 0 -
- Rule Macau 1975 1977 - Apr Sun>=15 3:30 1:00 S
- Rule Macau 1978 1980 - Apr Sun>=15 0:00 1:00 S
- Rule Macau 1978 1980 - Oct Sun>=15 0:00 0 -
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Macau 7:34:20 - LMT 1912 Jan 1
- 8:00 Macau MO%sT 1999 Dec 20 # return to China
- 8:00 PRC C%sT
- ###############################################################################
- # Cyprus
- #
- # Milne says the Eastern Telegraph Company used 2:14:00. Stick with LMT.
- #
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Cyprus 1975 only - Apr 13 0:00 1:00 S
- Rule Cyprus 1975 only - Oct 12 0:00 0 -
- Rule Cyprus 1976 only - May 15 0:00 1:00 S
- Rule Cyprus 1976 only - Oct 11 0:00 0 -
- Rule Cyprus 1977 1980 - Apr Sun>=1 0:00 1:00 S
- Rule Cyprus 1977 only - Sep 25 0:00 0 -
- Rule Cyprus 1978 only - Oct 2 0:00 0 -
- Rule Cyprus 1979 1997 - Sep lastSun 0:00 0 -
- Rule Cyprus 1981 1998 - Mar lastSun 0:00 1:00 S
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Nicosia 2:13:28 - LMT 1921 Nov 14
- 2:00 Cyprus EE%sT 1998 Sep
- 2:00 EUAsia EE%sT
- # IATA SSIM (1998-09) has Cyprus using EU rules for the first time.
- # Classically, Cyprus belongs to Asia; e.g. see Herodotus, Histories, I.72.
- # However, for various reasons many users expect to find it under Europe.
- Link Asia/Nicosia Europe/Nicosia
- # Georgia
- # From Paul Eggert (1994-11-19):
- # Today's _Economist_ (p 60) reports that Georgia moved its clocks forward
- # an hour recently, due to a law proposed by Zurab Murvanidze,
- # an MP who went on a hunger strike for 11 days to force discussion about it!
- # We have no details, but we'll guess they didn't move the clocks back in fall.
- #
- # From Mathew Englander, quoting AP (1996-10-23 13:05-04):
- # Instead of putting back clocks at the end of October, Georgia
- # will stay on daylight savings time this winter to save energy,
- # President Eduard Shevardnadze decreed Wednesday.
- #
- # From the BBC via Joseph S. Myers (2004-06-27):
- #
- # Georgia moved closer to Western Europe on Sunday... The former Soviet
- # republic has changed its time zone back to that of Moscow. As a result it
- # is now just four hours ahead of Greenwich Mean Time, rather than five hours
- # ahead. The switch was decreed by the pro-Western president of Georgia,
- # Mikheil Saakashvili, who said the change was partly prompted by the process
- # of integration into Europe.
- # From Teimuraz Abashidze (2005-11-07):
- # Government of Georgia ... decided to NOT CHANGE daylight savings time on
- # [Oct.] 30, as it was done before during last more than 10 years.
- # Currently, we are in fact GMT +4:00, as before 30 October it was GMT
- # +3:00.... The problem is, there is NO FORMAL LAW or governmental document
- # about it. As far as I can find, I was told, that there is no document,
- # because we just DIDN'T ISSUE document about switching to winter time....
- # I don't know what can be done, especially knowing that some years ago our
- # DST rules where changed THREE TIMES during one month.
- # Milne 1899 says Tbilisi (Tiflis) time was 2:59:05.7.
- # Byalokoz 1919 says Georgia was 2:59:11.
- # Go with Byalokoz.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Tbilisi 2:59:11 - LMT 1880
- 2:59:11 - TBMT 1924 May 2 # Tbilisi Mean Time
- 3:00 - TBIT 1957 Mar # Tbilisi Time
- 4:00 RussiaAsia TBI%sT 1991 Mar 31 2:00s
- 3:00 1:00 TBIST 1991 Apr 9 # independence
- 3:00 RussiaAsia GE%sT 1992 # Georgia Time
- 3:00 E-EurAsia GE%sT 1994 Sep lastSun
- 4:00 E-EurAsia GE%sT 1996 Oct lastSun
- 4:00 1:00 GEST 1997 Mar lastSun
- 4:00 E-EurAsia GE%sT 2004 Jun 27
- 3:00 RussiaAsia GE%sT 2005 Mar lastSun 2:00
- 4:00 - GET
- # East Timor
- # See Indonesia for the 1945 transition.
- # From João Carrascalão, brother of the former governor of East Timor, in
- # East Timor may be late for its millennium
- # <http://etan.org/et99c/december/26-31/30ETMAY.htm> (1999-12-26/31):
- # Portugal tried to change the time forward in 1974 because the sun
- # rises too early but the suggestion raised a lot of problems with the
- # Timorese and I still don't think it would work today because it
- # conflicts with their way of life.
- # From Paul Eggert (2000-12-04):
- # We don't have any record of the above attempt.
- # Most likely our records are incomplete, but we have no better data.
- # From Manoel de Almeida e Silva, Deputy Spokesman for the UN Secretary-General
- # http://www.hri.org/news/world/undh/2000/00-08-16.undh.html
- # (2000-08-16):
- # The Cabinet of the East Timor Transition Administration decided
- # today to advance East Timor's time by one hour. The time change,
- # which will be permanent, with no seasonal adjustment, will happen at
- # midnight on Saturday, September 16.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Dili 8:22:20 - LMT 1912 Jan 1
- 8:00 - TLT 1942 Feb 21 23:00 # E Timor Time
- 9:00 - JST 1945 Sep 23
- 9:00 - TLT 1976 May 3
- 8:00 - WITA 2000 Sep 17 0:00
- 9:00 - TLT
- # India
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Kolkata 5:53:28 - LMT 1880 # Kolkata
- 5:53:20 - HMT 1941 Oct # Howrah Mean Time?
- 6:30 - BURT 1942 May 15 # Burma Time
- 5:30 - IST 1942 Sep
- 5:30 1:00 IST 1945 Oct 15
- 5:30 - IST
- # The following are like Asia/Kolkata:
- # Andaman Is
- # Lakshadweep (Laccadive, Minicoy and Amindivi Is)
- # Nicobar Is
- # Indonesia
- #
- # From Paul Eggert (2014-09-06):
- # The 1876 Report of the Secretary of the [US] Navy, p 306 says that Batavia
- # civil time was 7:07:12.5; round to even for Jakarta.
- #
- # From Gwillim Law (2001-05-28), overriding Shanks & Pottenger:
- # http://www.sumatera-inc.com/go_to_invest/about_indonesia.asp#standtime
- # says that Indonesia's time zones changed on 1988-01-01. Looking at some
- # time zone maps, I think that must refer to Western Borneo (Kalimantan Barat
- # and Kalimantan Tengah) switching from UTC+8 to UTC+7.
- #
- # From Paul Eggert (2007-03-10):
- # Here is another correction to Shanks & Pottenger.
- # JohnTWB writes that Japanese forces did not surrender control in
- # Indonesia until 1945-09-01 00:00 at the earliest (in Jakarta) and
- # other formal surrender ceremonies were September 9, 11, and 13, plus
- # September 12 for the regional surrender to Mountbatten in Singapore.
- # These would be the earliest possible times for a change.
- # Régimes horaires pour le monde entier, by Henri Le Corre, (Éditions
- # Traditionnelles, 1987, Paris) says that Java and Madura switched
- # from JST to UTC+07:30 on 1945-09-23, and gives 1944-09-01 for Jayapura
- # (Hollandia). For now, assume all Indonesian locations other than Jayapura
- # switched on 1945-09-23.
- #
- # From Paul Eggert (2013-08-11):
- # Normally the tz database uses English-language abbreviations, but in
- # Indonesia it's typical to use Indonesian-language abbreviations even
- # when writing in English. For example, see the English-language
- # summary published by the Time and Frequency Laboratory of the
- # Research Center for Calibration, Instrumentation and Metrology,
- # Indonesia, <http://time.kim.lipi.go.id/time-eng.php> (2006-09-29).
- # The abbreviations are:
- #
- # WIB - UTC+7 - Waktu Indonesia Barat (Indonesia western time)
- # WITA - UTC+8 - Waktu Indonesia Tengah (Indonesia central time)
- # WIT - UTC+9 - Waktu Indonesia Timur (Indonesia eastern time)
- #
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- # Java, Sumatra
- Zone Asia/Jakarta 7:07:12 - LMT 1867 Aug 10
- # Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13,
- # but this must be a typo.
- 7:07:12 - BMT 1923 Dec 31 23:47:12 # Batavia
- 7:20 - JAVT 1932 Nov # Java Time
- 7:30 - WIB 1942 Mar 23
- 9:00 - JST 1945 Sep 23
- 7:30 - WIB 1948 May
- 8:00 - WIB 1950 May
- 7:30 - WIB 1964
- 7:00 - WIB
- # west and central Borneo
- Zone Asia/Pontianak 7:17:20 - LMT 1908 May
- 7:17:20 - PMT 1932 Nov # Pontianak MT
- 7:30 - WIB 1942 Jan 29
- 9:00 - JST 1945 Sep 23
- 7:30 - WIB 1948 May
- 8:00 - WIB 1950 May
- 7:30 - WIB 1964
- 8:00 - WITA 1988 Jan 1
- 7:00 - WIB
- # Sulawesi, Lesser Sundas, east and south Borneo
- Zone Asia/Makassar 7:57:36 - LMT 1920
- 7:57:36 - MMT 1932 Nov # Macassar MT
- 8:00 - WITA 1942 Feb 9
- 9:00 - JST 1945 Sep 23
- 8:00 - WITA
- # Maluku Islands, West Papua, Papua
- Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov
- 9:00 - WIT 1944 Sep 1
- 9:30 - ACST 1964
- 9:00 - WIT
- # Iran
- # From Roozbeh Pournader (2003-03-15):
- # This is an English translation of what I just found (originally in Persian).
- # The Gregorian dates in brackets are mine:
- #
- # Official Newspaper No. 13548-1370/6/25 [1991-09-16]
- # No. 16760/T233 H 1370/6/10 [1991-09-01]
- #
- # The Rule About Change of the Official Time of the Country
- #
- # The Board of Ministers, in the meeting dated 1370/5/23 [1991-08-14],
- # based on the suggestion number 2221/D dated 1370/4/22 [1991-07-13]
- # of the Country's Organization for Official and Employment Affairs,
- # and referring to the law for equating the working hours of workers
- # and officers in the whole country dated 1359/4/23 [1980-07-14], and
- # for synchronizing the official times of the country, agreed that:
- #
- # The official time of the country will should move forward one hour
- # at the 24[:00] hours of the first day of Farvardin and should return
- # to its previous state at the 24[:00] hours of the 30th day of
- # Shahrivar.
- #
- # First Deputy to the President - Hassan Habibi
- #
- # From personal experience, that agrees with what has been followed
- # for at least the last 5 years. Before that, for a few years, the
- # date used was the first Thursday night of Farvardin and the last
- # Thursday night of Shahrivar, but I can't give exact dates....
- # I have also changed the abbreviations to what is considered correct
- # here in Iran, IRST for regular time and IRDT for daylight saving time.
- #
- # From Roozbeh Pournader (2005-04-05):
- # The text of the Iranian law, in effect since 1925, clearly mentions
- # that the true solar year is the measure, and there is no arithmetic
- # leap year calculation involved. There has never been any serious
- # plan to change that law....
- #
- # From Paul Eggert (2006-03-22):
- # Go with Shanks & Pottenger before Sept. 1991, and with Pournader thereafter.
- # I used Ed Reingold's cal-persia in GNU Emacs 21.2 to check Persian dates,
- # stopping after 2037 when 32-bit time_t's overflow.
- # That cal-persia used Birashk's approximation, which disagrees with the solar
- # calendar predictions for the year 2025, so I corrected those dates by hand.
- #
- # From Oscar van Vlijmen (2005-03-30), writing about future
- # discrepancies between cal-persia and the Iranian calendar:
- # For 2091 solar-longitude-after yields 2091-03-20 08:40:07.7 UT for
- # the vernal equinox and that gets so close to 12:00 some local
- # Iranian time that the definition of the correct location needs to be
- # known exactly, amongst other factors. 2157 is even closer:
- # 2157-03-20 08:37:15.5 UT. But the Gregorian year 2025 should give
- # no interpretation problem whatsoever. By the way, another instant
- # in the near future where there will be a discrepancy between
- # arithmetical and astronomical Iranian calendars will be in 2058:
- # vernal equinox on 2058-03-20 09:03:05.9 UT. The Java version of
- # Reingold's/Dershowitz' calculator gives correctly the Gregorian date
- # 2058-03-21 for 1 Farvardin 1437 (astronomical).
- #
- # From Steffen Thorsen (2006-03-22):
- # Several of my users have reported that Iran will not observe DST anymore:
- # http://www.irna.ir/en/news/view/line-17/0603193812164948.htm
- #
- # From Reuters (2007-09-16), with a heads-up from Jesper Nørgaard Welen:
- # ... the Guardian Council ... approved a law on Sunday to re-introduce
- # daylight saving time ...
- # http://uk.reuters.com/article/oilRpt/idUKBLA65048420070916
- #
- # From Roozbeh Pournader (2007-11-05):
- # This is quoted from Official Gazette of the Islamic Republic of
- # Iran, Volume 63, No. 18242, dated Tuesday 1386/6/24
- # [2007-10-16]. I am doing the best translation I can:...
- # The official time of the country will be moved forward for one hour
- # on the 24 hours of the first day of the month of Farvardin and will
- # be changed back to its previous state on the 24 hours of the
- # thirtieth day of Shahrivar.
- #
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Iran 1978 1980 - Mar 21 0:00 1:00 D
- Rule Iran 1978 only - Oct 21 0:00 0 S
- Rule Iran 1979 only - Sep 19 0:00 0 S
- Rule Iran 1980 only - Sep 23 0:00 0 S
- Rule Iran 1991 only - May 3 0:00 1:00 D
- Rule Iran 1992 1995 - Mar 22 0:00 1:00 D
- Rule Iran 1991 1995 - Sep 22 0:00 0 S
- Rule Iran 1996 only - Mar 21 0:00 1:00 D
- Rule Iran 1996 only - Sep 21 0:00 0 S
- Rule Iran 1997 1999 - Mar 22 0:00 1:00 D
- Rule Iran 1997 1999 - Sep 22 0:00 0 S
- Rule Iran 2000 only - Mar 21 0:00 1:00 D
- Rule Iran 2000 only - Sep 21 0:00 0 S
- Rule Iran 2001 2003 - Mar 22 0:00 1:00 D
- Rule Iran 2001 2003 - Sep 22 0:00 0 S
- Rule Iran 2004 only - Mar 21 0:00 1:00 D
- Rule Iran 2004 only - Sep 21 0:00 0 S
- Rule Iran 2005 only - Mar 22 0:00 1:00 D
- Rule Iran 2005 only - Sep 22 0:00 0 S
- Rule Iran 2008 only - Mar 21 0:00 1:00 D
- Rule Iran 2008 only - Sep 21 0:00 0 S
- Rule Iran 2009 2011 - Mar 22 0:00 1:00 D
- Rule Iran 2009 2011 - Sep 22 0:00 0 S
- Rule Iran 2012 only - Mar 21 0:00 1:00 D
- Rule Iran 2012 only - Sep 21 0:00 0 S
- Rule Iran 2013 2015 - Mar 22 0:00 1:00 D
- Rule Iran 2013 2015 - Sep 22 0:00 0 S
- Rule Iran 2016 only - Mar 21 0:00 1:00 D
- Rule Iran 2016 only - Sep 21 0:00 0 S
- Rule Iran 2017 2019 - Mar 22 0:00 1:00 D
- Rule Iran 2017 2019 - Sep 22 0:00 0 S
- Rule Iran 2020 only - Mar 21 0:00 1:00 D
- Rule Iran 2020 only - Sep 21 0:00 0 S
- Rule Iran 2021 2023 - Mar 22 0:00 1:00 D
- Rule Iran 2021 2023 - Sep 22 0:00 0 S
- Rule Iran 2024 only - Mar 21 0:00 1:00 D
- Rule Iran 2024 only - Sep 21 0:00 0 S
- Rule Iran 2025 2027 - Mar 22 0:00 1:00 D
- Rule Iran 2025 2027 - Sep 22 0:00 0 S
- Rule Iran 2028 2029 - Mar 21 0:00 1:00 D
- Rule Iran 2028 2029 - Sep 21 0:00 0 S
- Rule Iran 2030 2031 - Mar 22 0:00 1:00 D
- Rule Iran 2030 2031 - Sep 22 0:00 0 S
- Rule Iran 2032 2033 - Mar 21 0:00 1:00 D
- Rule Iran 2032 2033 - Sep 21 0:00 0 S
- Rule Iran 2034 2035 - Mar 22 0:00 1:00 D
- Rule Iran 2034 2035 - Sep 22 0:00 0 S
- Rule Iran 2036 2037 - Mar 21 0:00 1:00 D
- Rule Iran 2036 2037 - Sep 21 0:00 0 S
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Tehran 3:25:44 - LMT 1916
- 3:25:44 - TMT 1946 # Tehran Mean Time
- 3:30 - IRST 1977 Nov
- 4:00 Iran IR%sT 1979
- 3:30 Iran IR%sT
- # Iraq
- #
- # From Jonathan Lennox (2000-06-12):
- # An article in this week's Economist ("Inside the Saddam-free zone", p. 50 in
- # the U.S. edition) on the Iraqi Kurds contains a paragraph:
- # "The three northern provinces ... switched their clocks this spring and
- # are an hour ahead of Baghdad."
- #
- # But Rives McDow (2000-06-18) quotes a contact in Iraqi-Kurdistan as follows:
- # In the past, some Kurdish nationalists, as a protest to the Iraqi
- # Government, did not adhere to daylight saving time. They referred
- # to daylight saving as Saddam time. But, as of today, the time zone
- # in Iraqi-Kurdistan is on standard time with Baghdad, Iraq.
- #
- # So we'll ignore the Economist's claim.
- # From Steffen Thorsen (2008-03-10):
- # The cabinet in Iraq abolished DST last week, according to the following
- # news sources (in Arabic):
- # http://www.aljeeran.net/wesima_articles/news-20080305-98602.html
- # http://www.aswataliraq.info/look/article.tpl?id=2047&IdLanguage=17&IdPublication=4&NrArticle=71743&NrIssue=1&NrSection=10
- #
- # We have published a short article in English about the change:
- # http://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Iraq 1982 only - May 1 0:00 1:00 D
- Rule Iraq 1982 1984 - Oct 1 0:00 0 S
- Rule Iraq 1983 only - Mar 31 0:00 1:00 D
- Rule Iraq 1984 1985 - Apr 1 0:00 1:00 D
- Rule Iraq 1985 1990 - Sep lastSun 1:00s 0 S
- Rule Iraq 1986 1990 - Mar lastSun 1:00s 1:00 D
- # IATA SSIM (1991/1996) says Apr 1 12:01am UTC; guess the ':01' is a typo.
- # Shanks & Pottenger say Iraq did not observe DST 1992/1997; ignore this.
- #
- Rule Iraq 1991 2007 - Apr 1 3:00s 1:00 D
- Rule Iraq 1991 2007 - Oct 1 3:00s 0 S
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Baghdad 2:57:40 - LMT 1890
- 2:57:36 - BMT 1918 # Baghdad Mean Time?
- 3:00 - AST 1982 May
- 3:00 Iraq A%sT
- ###############################################################################
- # Israel
- # From Ephraim Silverberg (2001-01-11):
- #
- # I coined "IST/IDT" circa 1988. Until then there were three
- # different abbreviations in use:
- #
- # JST Jerusalem Standard Time [Danny Braniss, Hebrew University]
- # IZT Israel Zonal (sic) Time [Prof. Haim Papo, Technion]
- # EEST Eastern Europe Standard Time [used by almost everyone else]
- #
- # Since timezones should be called by country and not capital cities,
- # I ruled out JST. As Israel is in Asia Minor and not Eastern Europe,
- # EEST was equally unacceptable. Since "zonal" was not compatible with
- # any other timezone abbreviation, I felt that 'IST' was the way to go
- # and, indeed, it has received almost universal acceptance in timezone
- # settings in Israeli computers.
- #
- # In any case, I am happy to share timezone abbreviations with India,
- # high on my favorite-country list (and not only because my wife's
- # family is from India).
- # From Shanks & Pottenger:
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Zion 1940 only - Jun 1 0:00 1:00 D
- Rule Zion 1942 1944 - Nov 1 0:00 0 S
- Rule Zion 1943 only - Apr 1 2:00 1:00 D
- Rule Zion 1944 only - Apr 1 0:00 1:00 D
- Rule Zion 1945 only - Apr 16 0:00 1:00 D
- Rule Zion 1945 only - Nov 1 2:00 0 S
- Rule Zion 1946 only - Apr 16 2:00 1:00 D
- Rule Zion 1946 only - Nov 1 0:00 0 S
- Rule Zion 1948 only - May 23 0:00 2:00 DD
- Rule Zion 1948 only - Sep 1 0:00 1:00 D
- Rule Zion 1948 1949 - Nov 1 2:00 0 S
- Rule Zion 1949 only - May 1 0:00 1:00 D
- Rule Zion 1950 only - Apr 16 0:00 1:00 D
- Rule Zion 1950 only - Sep 15 3:00 0 S
- Rule Zion 1951 only - Apr 1 0:00 1:00 D
- Rule Zion 1951 only - Nov 11 3:00 0 S
- Rule Zion 1952 only - Apr 20 2:00 1:00 D
- Rule Zion 1952 only - Oct 19 3:00 0 S
- Rule Zion 1953 only - Apr 12 2:00 1:00 D
- Rule Zion 1953 only - Sep 13 3:00 0 S
- Rule Zion 1954 only - Jun 13 0:00 1:00 D
- Rule Zion 1954 only - Sep 12 0:00 0 S
- Rule Zion 1955 only - Jun 11 2:00 1:00 D
- Rule Zion 1955 only - Sep 11 0:00 0 S
- Rule Zion 1956 only - Jun 3 0:00 1:00 D
- Rule Zion 1956 only - Sep 30 3:00 0 S
- Rule Zion 1957 only - Apr 29 2:00 1:00 D
- Rule Zion 1957 only - Sep 22 0:00 0 S
- Rule Zion 1974 only - Jul 7 0:00 1:00 D
- Rule Zion 1974 only - Oct 13 0:00 0 S
- Rule Zion 1975 only - Apr 20 0:00 1:00 D
- Rule Zion 1975 only - Aug 31 0:00 0 S
- Rule Zion 1985 only - Apr 14 0:00 1:00 D
- Rule Zion 1985 only - Sep 15 0:00 0 S
- Rule Zion 1986 only - May 18 0:00 1:00 D
- Rule Zion 1986 only - Sep 7 0:00 0 S
- Rule Zion 1987 only - Apr 15 0:00 1:00 D
- Rule Zion 1987 only - Sep 13 0:00 0 S
- # From Avigdor Finkelstein (2014-03-05):
- # I check the Parliament (Knesset) records and there it's stated that the
- # [1988] transition should take place on Saturday night, when the Sabbath
- # ends and changes to Sunday.
- Rule Zion 1988 only - Apr 10 0:00 1:00 D
- Rule Zion 1988 only - Sep 4 0:00 0 S
- # From Ephraim Silverberg
- # (1997-03-04, 1998-03-16, 1998-12-28, 2000-01-17, 2000-07-25, 2004-12-22,
- # and 2005-02-17):
- # According to the Office of the Secretary General of the Ministry of
- # Interior, there is NO set rule for Daylight-Savings/Standard time changes.
- # One thing is entrenched in law, however: that there must be at least 150
- # days of daylight savings time annually. From 1993-1998, the change to
- # daylight savings time was on a Friday morning from midnight IST to
- # 1 a.m IDT; up until 1998, the change back to standard time was on a
- # Saturday night from midnight daylight savings time to 11 p.m. standard
- # time. 1996 is an exception to this rule where the change back to standard
- # time took place on Sunday night instead of Saturday night to avoid
- # conflicts with the Jewish New Year. In 1999, the change to
- # daylight savings time was still on a Friday morning but from
- # 2 a.m. IST to 3 a.m. IDT; furthermore, the change back to standard time
- # was also on a Friday morning from 2 a.m. IDT to 1 a.m. IST for
- # 1999 only. In the year 2000, the change to daylight savings time was
- # similar to 1999, but although the change back will be on a Friday, it
- # will take place from 1 a.m. IDT to midnight IST. Starting in 2001, all
- # changes to/from will take place at 1 a.m. old time, but now there is no
- # rule as to what day of the week it will take place in as the start date
- # (except in 2003) is the night after the Passover Seder (i.e. the eve
- # of the 16th of Nisan in the lunar Hebrew calendar) and the end date
- # (except in 2002) is three nights before Yom Kippur [Day of Atonement]
- # (the eve of the 7th of Tishrei in the lunar Hebrew calendar).
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Zion 1989 only - Apr 30 0:00 1:00 D
- Rule Zion 1989 only - Sep 3 0:00 0 S
- Rule Zion 1990 only - Mar 25 0:00 1:00 D
- Rule Zion 1990 only - Aug 26 0:00 0 S
- Rule Zion 1991 only - Mar 24 0:00 1:00 D
- Rule Zion 1991 only - Sep 1 0:00 0 S
- Rule Zion 1992 only - Mar 29 0:00 1:00 D
- Rule Zion 1992 only - Sep 6 0:00 0 S
- Rule Zion 1993 only - Apr 2 0:00 1:00 D
- Rule Zion 1993 only - Sep 5 0:00 0 S
- # The dates for 1994-1995 were obtained from Office of the Spokeswoman for the
- # Ministry of Interior, Jerusalem, Israel. The spokeswoman can be reached by
- # calling the office directly at 972-2-6701447 or 972-2-6701448.
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Zion 1994 only - Apr 1 0:00 1:00 D
- Rule Zion 1994 only - Aug 28 0:00 0 S
- Rule Zion 1995 only - Mar 31 0:00 1:00 D
- Rule Zion 1995 only - Sep 3 0:00 0 S
- # The dates for 1996 were determined by the Minister of Interior of the
- # time, Haim Ramon. The official announcement regarding 1996-1998
- # (with the dates for 1997-1998 no longer being relevant) can be viewed at:
- #
- # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/1996-1998.ramon.ps.gz
- #
- # The dates for 1997-1998 were altered by his successor, Rabbi Eli Suissa.
- #
- # The official announcements for the years 1997-1999 can be viewed at:
- #
- # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/YYYY.ps.gz
- #
- # where YYYY is the relevant year.
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Zion 1996 only - Mar 15 0:00 1:00 D
- Rule Zion 1996 only - Sep 16 0:00 0 S
- Rule Zion 1997 only - Mar 21 0:00 1:00 D
- Rule Zion 1997 only - Sep 14 0:00 0 S
- Rule Zion 1998 only - Mar 20 0:00 1:00 D
- Rule Zion 1998 only - Sep 6 0:00 0 S
- Rule Zion 1999 only - Apr 2 2:00 1:00 D
- Rule Zion 1999 only - Sep 3 2:00 0 S
- # The Knesset Interior Committee has changed the dates for 2000 for
- # the third time in just over a year and have set new dates for the
- # years 2001-2004 as well.
- #
- # The official announcement for the start date of 2000 can be viewed at:
- #
- # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2000-start.ps.gz
- #
- # The official announcement for the end date of 2000 and the dates
- # for the years 2001-2004 can be viewed at:
- #
- # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2000-2004.ps.gz
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Zion 2000 only - Apr 14 2:00 1:00 D
- Rule Zion 2000 only - Oct 6 1:00 0 S
- Rule Zion 2001 only - Apr 9 1:00 1:00 D
- Rule Zion 2001 only - Sep 24 1:00 0 S
- Rule Zion 2002 only - Mar 29 1:00 1:00 D
- Rule Zion 2002 only - Oct 7 1:00 0 S
- Rule Zion 2003 only - Mar 28 1:00 1:00 D
- Rule Zion 2003 only - Oct 3 1:00 0 S
- Rule Zion 2004 only - Apr 7 1:00 1:00 D
- Rule Zion 2004 only - Sep 22 1:00 0 S
- # The proposed law agreed upon by the Knesset Interior Committee on
- # 2005-02-14 is that, for 2005 and beyond, DST starts at 02:00 the
- # last Friday before April 2nd (i.e. the last Friday in March or April
- # 1st itself if it falls on a Friday) and ends at 02:00 on the Saturday
- # night _before_ the fast of Yom Kippur.
- #
- # Those who can read Hebrew can view the announcement at:
- #
- # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2005+beyond.ps
- # From Paul Eggert (2012-10-26):
- # I used Ephraim Silverberg's dst-israel.el program
- # <ftp://ftp.cs.huji.ac.il/pub/tz/software/dst-israel.el> (2005-02-20)
- # along with Ed Reingold's cal-hebrew in GNU Emacs 21.4,
- # to generate the transitions from 2005 through 2012.
- # (I replaced "lastFri" with "Fri>=26" by hand.)
- # The spring transitions all correspond to the following Rule:
- #
- # Rule Zion 2005 2012 - Mar Fri>=26 2:00 1:00 D
- #
- # but older zic implementations (e.g., Solaris 8) do not support
- # "Fri>=26" to mean April 1 in years like 2005, so for now we list the
- # springtime transitions explicitly.
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Zion 2005 only - Apr 1 2:00 1:00 D
- Rule Zion 2005 only - Oct 9 2:00 0 S
- Rule Zion 2006 2010 - Mar Fri>=26 2:00 1:00 D
- Rule Zion 2006 only - Oct 1 2:00 0 S
- Rule Zion 2007 only - Sep 16 2:00 0 S
- Rule Zion 2008 only - Oct 5 2:00 0 S
- Rule Zion 2009 only - Sep 27 2:00 0 S
- Rule Zion 2010 only - Sep 12 2:00 0 S
- Rule Zion 2011 only - Apr 1 2:00 1:00 D
- Rule Zion 2011 only - Oct 2 2:00 0 S
- Rule Zion 2012 only - Mar Fri>=26 2:00 1:00 D
- Rule Zion 2012 only - Sep 23 2:00 0 S
- # From Ephraim Silverberg (2013-06-27):
- # On June 23, 2013, the Israeli government approved changes to the
- # Time Decree Law. The next day, the changes passed the First Reading
- # in the Knesset. The law is expected to pass the Second and Third
- # (final) Readings by the beginning of September 2013.
- #
- # As of 2013, DST starts at 02:00 on the Friday before the last Sunday
- # in March. DST ends at 02:00 on the last Sunday of October.
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Zion 2013 max - Mar Fri>=23 2:00 1:00 D
- Rule Zion 2013 max - Oct lastSun 2:00 0 S
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Jerusalem 2:20:54 - LMT 1880
- 2:20:40 - JMT 1918 # Jerusalem Mean Time?
- 2:00 Zion I%sT
- ###############################################################################
- # Japan
- # '9:00' and 'JST' is from Guy Harris.
- # From Paul Eggert (1995-03-06):
- # Today's _Asahi Evening News_ (page 4) reports that Japan had
- # daylight saving between 1948 and 1951, but "the system was discontinued
- # because the public believed it would lead to longer working hours."
- # From Mayumi Negishi in the 2005-08-10 Japan Times:
- # http://www.japantimes.co.jp/cgi-bin/getarticle.pl5?nn20050810f2.htm
- # Occupation authorities imposed daylight-saving time on Japan on
- # [1948-05-01].... But lack of prior debate and the execution of
- # daylight-saving time just three days after the bill was passed generated
- # deep hatred of the concept.... The Diet unceremoniously passed a bill to
- # dump the unpopular system in October 1951, less than a month after the San
- # Francisco Peace Treaty was signed. (A government poll in 1951 showed 53%
- # of the Japanese wanted to scrap daylight-saving time, as opposed to 30% who
- # wanted to keep it.)
- # From Paul Eggert (2006-03-22):
- # Shanks & Pottenger write that DST in Japan during those years was as follows:
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Japan 1948 only - May Sun>=1 2:00 1:00 D
- Rule Japan 1948 1951 - Sep Sat>=8 2:00 0 S
- Rule Japan 1949 only - Apr Sun>=1 2:00 1:00 D
- Rule Japan 1950 1951 - May Sun>=1 2:00 1:00 D
- # but the only locations using it (for birth certificates, presumably, since
- # their audience is astrologers) were US military bases. For now, assume
- # that for most purposes daylight-saving time was observed; otherwise, what
- # would have been the point of the 1951 poll?
- # From Hideyuki Suzuki (1998-11-09):
- # 'Tokyo' usually stands for the former location of Tokyo Astronomical
- # Observatory: 139 degrees 44' 40.90" E (9h 18m 58.727s),
- # 35 degrees 39' 16.0" N.
- # This data is from 'Rika Nenpyou (Chronological Scientific Tables) 1996'
- # edited by National Astronomical Observatory of Japan....
- # JST (Japan Standard Time) has been used since 1888-01-01 00:00 (JST).
- # The law is enacted on 1886-07-07.
- # From Hideyuki Suzuki (1998-11-16):
- # The ordinance No. 51 (1886) established "standard time" in Japan,
- # which stands for the time on 135 degrees E.
- # In the ordinance No. 167 (1895), "standard time" was renamed to "central
- # standard time". And the same ordinance also established "western standard
- # time", which stands for the time on 120 degrees E.... But "western standard
- # time" was abolished in the ordinance No. 529 (1937). In the ordinance No.
- # 167, there is no mention regarding for what place western standard time is
- # standard....
- #
- # I wrote "ordinance" above, but I don't know how to translate.
- # In Japanese it's "chokurei", which means ordinance from emperor.
- # From Yu-Cheng Chuang (2013-07-12):
- # ...the Meiji Emperor announced Ordinance No. 167 of Meiji Year 28 "The clause
- # about standard time" ... The adoption began from Jan 1, 1896.
- # http://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時)
- #
- # ...the Showa Emperor announced Ordinance No. 529 of Showa Year 12 ... which
- # means the whole Japan territory, including later occupations, adopt Japan
- # Central Time (UTC+9). The adoption began on Oct 1, 1937.
- # 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
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u
- 9:00 - JST 1896 Jan 1
- 9:00 - JCST 1937 Oct 1
- 9:00 Japan J%sT
- # Since 1938, all Japanese possessions have been like Asia/Tokyo.
- # Jordan
- #
- # From <http://star.arabia.com/990701/JO9.html>
- # Jordan Week (1999-07-01) via Steffen Thorsen (1999-09-09):
- # Clocks in Jordan were forwarded one hour on Wednesday at midnight,
- # in accordance with the government's decision to implement summer time
- # all year round.
- #
- # From <http://star.arabia.com/990930/JO9.html>
- # Jordan Week (1999-09-30) via Steffen Thorsen (1999-11-09):
- # Winter time starts today Thursday, 30 September. Clocks will be turned back
- # by one hour. This is the latest government decision and it's final!
- # The decision was taken because of the increase in working hours in
- # government's departments from six to seven hours.
- #
- # From Paul Eggert (2005-11-22):
- # Starting 2003 transitions are from Steffen Thorsen's web site timeanddate.com.
- #
- # From Steffen Thorsen (2005-11-23):
- # For Jordan I have received multiple independent user reports every year
- # about DST end dates, as the end-rule is different every year.
- #
- # From Steffen Thorsen (2006-10-01), after a heads-up from Hilal Malawi:
- # http://www.petranews.gov.jo/nepras/2006/Sep/05/4000.htm
- # "Jordan will switch to winter time on Friday, October 27".
- #
- # From Steffen Thorsen (2009-04-02):
- # This single one might be good enough, (2009-03-24, Arabic):
- # http://petra.gov.jo/Artical.aspx?Lng=2&Section=8&Artical=95279
- #
- # Google's translation:
- #
- # > The Council of Ministers decided in 2002 to adopt the principle of timely
- # > submission of the summer at 60 minutes as of midnight on the last Thursday
- # > of the month of March of each year.
- #
- # So - this means the midnight between Thursday and Friday since 2002.
- # From Arthur David Olson (2009-04-06):
- # We still have Jordan switching to DST on Thursdays in 2000 and 2001.
- # From Steffen Thorsen (2012-10-25):
- # Yesterday the government in Jordan announced that they will not
- # switch back to standard time this winter, so the will stay on DST
- # until about the same time next year (at least).
- # http://www.petra.gov.jo/Public_News/Nws_NewsDetails.aspx?NewsID=88950
- # From Steffen Thorsen (2013-12-11):
- # Jordan Times and other sources say that Jordan is going back to
- # UTC+2 on 2013-12-19 at midnight:
- # http://jordantimes.com/govt-decides-to-switch-back-to-wintertime
- # Official, in Arabic:
- # http://www.petra.gov.jo/public_news/Nws_NewsDetails.aspx?Menu_ID=&Site_Id=2&lang=1&NewsID=133230&CatID=14
- # ... Our background/permalink about it
- # http://www.timeanddate.com/news/time/jordan-reverses-dst-decision.html
- # ...
- # http://www.petra.gov.jo/Public_News/Nws_NewsDetails.aspx?lang=2&site_id=1&NewsID=133313&Type=P
- # ... says midnight for the coming one and 1:00 for the ones in the future
- # (and they will use DST again next year, using the normal schedule).
- # From Paul Eggert (2013-12-11):
- # As Steffen suggested, consider the past 21-month experiment to be DST.
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Jordan 1973 only - Jun 6 0:00 1:00 S
- Rule Jordan 1973 1975 - Oct 1 0:00 0 -
- Rule Jordan 1974 1977 - May 1 0:00 1:00 S
- Rule Jordan 1976 only - Nov 1 0:00 0 -
- Rule Jordan 1977 only - Oct 1 0:00 0 -
- Rule Jordan 1978 only - Apr 30 0:00 1:00 S
- Rule Jordan 1978 only - Sep 30 0:00 0 -
- Rule Jordan 1985 only - Apr 1 0:00 1:00 S
- Rule Jordan 1985 only - Oct 1 0:00 0 -
- Rule Jordan 1986 1988 - Apr Fri>=1 0:00 1:00 S
- Rule Jordan 1986 1990 - Oct Fri>=1 0:00 0 -
- Rule Jordan 1989 only - May 8 0:00 1:00 S
- Rule Jordan 1990 only - Apr 27 0:00 1:00 S
- Rule Jordan 1991 only - Apr 17 0:00 1:00 S
- Rule Jordan 1991 only - Sep 27 0:00 0 -
- Rule Jordan 1992 only - Apr 10 0:00 1:00 S
- Rule Jordan 1992 1993 - Oct Fri>=1 0:00 0 -
- Rule Jordan 1993 1998 - Apr Fri>=1 0:00 1:00 S
- Rule Jordan 1994 only - Sep Fri>=15 0:00 0 -
- Rule Jordan 1995 1998 - Sep Fri>=15 0:00s 0 -
- Rule Jordan 1999 only - Jul 1 0:00s 1:00 S
- Rule Jordan 1999 2002 - Sep lastFri 0:00s 0 -
- Rule Jordan 2000 2001 - Mar lastThu 0:00s 1:00 S
- Rule Jordan 2002 2012 - Mar lastThu 24:00 1:00 S
- Rule Jordan 2003 only - Oct 24 0:00s 0 -
- Rule Jordan 2004 only - Oct 15 0:00s 0 -
- Rule Jordan 2005 only - Sep lastFri 0:00s 0 -
- Rule Jordan 2006 2011 - Oct lastFri 0:00s 0 -
- Rule Jordan 2013 only - Dec 20 0:00 0 -
- Rule Jordan 2014 max - Mar lastThu 24:00 1:00 S
- Rule Jordan 2014 max - Oct lastFri 0:00s 0 -
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Amman 2:23:44 - LMT 1931
- 2:00 Jordan EE%sT
- # Kazakhstan
- # From Paul Eggert (1996-11-22):
- # Andrew Evtichov (1996-04-13) writes that Kazakhstan
- # stayed in sync with Moscow after 1990, and that Aqtobe (formerly Aktyubinsk)
- # and Aqtau (formerly Shevchenko) are the largest cities in their zones.
- # Guess that Aqtau and Aqtobe diverged in 1995, since that's the first time
- # IATA SSIM mentions a third time zone in Kazakhstan.
- # From Paul Eggert (2006-03-22):
- # German Iofis, ELSI, Almaty (2001-10-09) reports that Kazakhstan uses
- # RussiaAsia rules, instead of switching at 00:00 as the IATA has it.
- # Go with Shanks & Pottenger, who have them always using RussiaAsia rules.
- # Also go with the following claims of Shanks & Pottenger:
- #
- # - Kazakhstan did not observe DST in 1991.
- # - Qyzylorda switched from +5:00 to +6:00 on 1992-01-19 02:00.
- # - Oral switched from +5:00 to +4:00 in spring 1989.
- # From Kazakhstan Embassy's News Bulletin No. 11
- # <http://www.kazsociety.org.uk/news/2005/03/30.htm> (2005-03-21):
- # The Government of Kazakhstan passed a resolution March 15 abolishing
- # daylight saving time citing lack of economic benefits and health
- # complications coupled with a decrease in productivity.
- #
- # From Branislav Kojic (in Astana) via Gwillim Law (2005-06-28):
- # ... what happened was that the former Kazakhstan Eastern time zone
- # was "blended" with the Central zone. Therefore, Kazakhstan now has
- # two time zones, and difference between them is one hour. The zone
- # closer to UTC is the former Western zone (probably still called the
- # same), encompassing four provinces in the west: Aqtobe, Atyrau,
- # Mangghystau, and West Kazakhstan. The other zone encompasses
- # everything else.... I guess that would make Kazakhstan time zones
- # de jure UTC+5 and UTC+6 respectively.
- #
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- #
- # Almaty (formerly Alma-Ata), representing most locations in Kazakhstan
- Zone Asia/Almaty 5:07:48 - LMT 1924 May 2 # or Alma-Ata
- 5:00 - ALMT 1930 Jun 21 # Alma-Ata Time
- 6:00 RussiaAsia ALM%sT 1991
- 6:00 - ALMT 1992
- 6:00 RussiaAsia ALM%sT 2005 Mar 15
- 6:00 - ALMT
- # Qyzylorda (aka Kyzylorda, Kizilorda, Kzyl-Orda, etc.)
- Zone Asia/Qyzylorda 4:21:52 - LMT 1924 May 2
- 4:00 - KIZT 1930 Jun 21 # Kizilorda Time
- 5:00 - KIZT 1981 Apr 1
- 5:00 1:00 KIZST 1981 Oct 1
- 6:00 - KIZT 1982 Apr 1
- 5:00 RussiaAsia KIZ%sT 1991
- 5:00 - KIZT 1991 Dec 16 # independence
- 5:00 - QYZT 1992 Jan 19 2:00
- 6:00 RussiaAsia QYZ%sT 2005 Mar 15
- 6:00 - QYZT
- # Aqtobe (aka Aktobe, formerly Aktyubinsk)
- Zone Asia/Aqtobe 3:48:40 - LMT 1924 May 2
- 4:00 - AKTT 1930 Jun 21 # Aktyubinsk Time
- 5:00 - AKTT 1981 Apr 1
- 5:00 1:00 AKTST 1981 Oct 1
- 6:00 - AKTT 1982 Apr 1
- 5:00 RussiaAsia AKT%sT 1991
- 5:00 - AKTT 1991 Dec 16 # independence
- 5:00 RussiaAsia AQT%sT 2005 Mar 15 # Aqtobe Time
- 5:00 - AQTT
- # Mangghystau
- # Aqtau was not founded until 1963, but it represents an inhabited region,
- # so include time stamps before 1963.
- Zone Asia/Aqtau 3:21:04 - LMT 1924 May 2
- 4:00 - FORT 1930 Jun 21 # Fort Shevchenko T
- 5:00 - FORT 1963
- 5:00 - SHET 1981 Oct 1 # Shevchenko Time
- 6:00 - SHET 1982 Apr 1
- 5:00 RussiaAsia SHE%sT 1991
- 5:00 - SHET 1991 Dec 16 # independence
- 5:00 RussiaAsia AQT%sT 1995 Mar lastSun 2:00 # Aqtau Time
- 4:00 RussiaAsia AQT%sT 2005 Mar 15
- 5:00 - AQTT
- # West Kazakhstan
- Zone Asia/Oral 3:25:24 - LMT 1924 May 2 # or Ural'sk
- 4:00 - URAT 1930 Jun 21 # Ural'sk time
- 5:00 - URAT 1981 Apr 1
- 5:00 1:00 URAST 1981 Oct 1
- 6:00 - URAT 1982 Apr 1
- 5:00 RussiaAsia URA%sT 1989 Mar 26 2:00
- 4:00 RussiaAsia URA%sT 1991
- 4:00 - URAT 1991 Dec 16 # independence
- 4:00 RussiaAsia ORA%sT 2005 Mar 15 # Oral Time
- 5:00 - ORAT
- # Kyrgyzstan (Kirgizstan)
- # Transitions through 1991 are from Shanks & Pottenger.
- # From Paul Eggert (2005-08-15):
- # According to an article dated today in the Kyrgyzstan Development Gateway
- # http://eng.gateway.kg/cgi-bin/page.pl?id=1&story_name=doc9979.shtml
- # Kyrgyzstan is canceling the daylight saving time system. I take the article
- # to mean that they will leave their clocks at 6 hours ahead of UTC.
- # From Malik Abdugaliev (2005-09-21):
- # Our government cancels daylight saving time 6th of August 2005.
- # From 2005-08-12 our GMT-offset is +6, w/o any daylight saving.
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Kyrgyz 1992 1996 - Apr Sun>=7 0:00s 1:00 S
- Rule Kyrgyz 1992 1996 - Sep lastSun 0:00 0 -
- Rule Kyrgyz 1997 2005 - Mar lastSun 2:30 1:00 S
- Rule Kyrgyz 1997 2004 - Oct lastSun 2:30 0 -
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Bishkek 4:58:24 - LMT 1924 May 2
- 5:00 - FRUT 1930 Jun 21 # Frunze Time
- 6:00 RussiaAsia FRU%sT 1991 Mar 31 2:00s
- 5:00 1:00 FRUST 1991 Aug 31 2:00 # independence
- 5:00 Kyrgyz KG%sT 2005 Aug 12 # Kyrgyzstan Time
- 6:00 - KGT
- ###############################################################################
- # Korea (North and South)
- # From Annie I. Bang (2006-07-10):
- # http://www.koreaherald.com/view.php?ud=200607100012
- # Korea ran a daylight saving program from 1949-61 but stopped it
- # during the 1950-53 Korean War. The system was temporarily enforced
- # between 1987 and 1988 ...
- # From Sanghyuk Jung (2014-10-29):
- # http://mm.icann.org/pipermail/tz/2014-October/021830.html
- # According to the Korean Wikipedia
- # http://ko.wikipedia.org/wiki/한국_표준시
- # [oldid=12896437 2014-09-04 08:03 UTC]
- # DST in Republic of Korea was as follows.... And I checked old
- # newspapers in Korean, all articles correspond with data in Wikipedia.
- # For example, the article in 1948 (Korean Language) proved that DST
- # started at June 1 in that year. For another example, the article in
- # 1988 said that DST started at 2:00 AM in that year.
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule ROK 1948 only - Jun 1 0:00 1:00 D
- Rule ROK 1948 only - Sep 13 0:00 0 S
- Rule ROK 1949 only - Apr 3 0:00 1:00 D
- Rule ROK 1949 1951 - Sep Sun>=8 0:00 0 S
- Rule ROK 1950 only - Apr 1 0:00 1:00 D
- Rule ROK 1951 only - May 6 0:00 1:00 D
- Rule ROK 1955 only - May 5 0:00 1:00 D
- Rule ROK 1955 only - Sep 9 0:00 0 S
- Rule ROK 1956 only - May 20 0:00 1:00 D
- Rule ROK 1956 only - Sep 30 0:00 0 S
- Rule ROK 1957 1960 - May Sun>=1 0:00 1:00 D
- Rule ROK 1957 1960 - Sep Sun>=18 0:00 0 S
- Rule ROK 1987 1988 - May Sun>=8 2:00 1:00 D
- Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S
- # From Paul Eggert (2014-10-30):
- # The Korean Wikipedia entry gives the following sources for UT offsets:
- #
- # 1908: Official Journal Article No. 3994 (Edict No. 5)
- # 1912: Governor-General of Korea Official Gazette Issue No. 367
- # (Announcement No. 338)
- # 1954: Presidential Decree No. 876 (1954-03-17)
- # 1961: Law No. 676 (1961-08-07)
- # 1987: Law No. 3919 (1986-12-31)
- #
- # The Wikipedia entry also has confusing information about a change
- # to UT+9 in April 1910, but then what would be the point of the later change
- # to UT+9 on 1912-01-01? Omit the 1910 change for now.
- #
- # I guessed that time zone abbreviations through 1945 followed the same
- # rules as discussed under Taiwan, with nominal switches from JST to KST
- # when the respective cities were taken over by the Allies after WWII.
- #
- # For Pyongyang we have no information; guess no changes since World War II.
- # From Steffen Thorsen (2015-08-07):
- # According to many news sources, North Korea is going to change to
- # the 8:30 time zone on August 15, one example:
- # http://www.bbc.com/news/world-asia-33815049
- #
- # From Paul Eggert (2015-08-15):
- # Bells rang out midnight (00:00) Friday as part of the celebrations. See:
- # Talmadge E. North Korea celebrates new time zone, 'Pyongyang Time'
- # http://news.yahoo.com/north-korea-celebrates-time-zone-pyongyang-time-164038128.html
- # There is no common English-language abbreviation for this time zone.
- # Use KST, as that's what we already use for 1954-1961 in ROK.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1
- 8:30 - KST 1912 Jan 1
- 9:00 - JCST 1937 Oct 1
- 9:00 - JST 1945 Sep 8
- 9:00 - KST 1954 Mar 21
- 8:30 ROK K%sT 1961 Aug 10
- 9:00 ROK K%sT
- Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1
- 8:30 - KST 1912 Jan 1
- 9:00 - JCST 1937 Oct 1
- 9:00 - JST 1945 Aug 24
- 9:00 - KST 2015 Aug 15 00:00
- 8:30 - KST
- ###############################################################################
- # Kuwait
- # See Asia/Riyadh.
- # Laos
- # See Asia/Bangkok.
- # Lebanon
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Lebanon 1920 only - Mar 28 0:00 1:00 S
- Rule Lebanon 1920 only - Oct 25 0:00 0 -
- Rule Lebanon 1921 only - Apr 3 0:00 1:00 S
- Rule Lebanon 1921 only - Oct 3 0:00 0 -
- Rule Lebanon 1922 only - Mar 26 0:00 1:00 S
- Rule Lebanon 1922 only - Oct 8 0:00 0 -
- Rule Lebanon 1923 only - Apr 22 0:00 1:00 S
- Rule Lebanon 1923 only - Sep 16 0:00 0 -
- Rule Lebanon 1957 1961 - May 1 0:00 1:00 S
- Rule Lebanon 1957 1961 - Oct 1 0:00 0 -
- Rule Lebanon 1972 only - Jun 22 0:00 1:00 S
- Rule Lebanon 1972 1977 - Oct 1 0:00 0 -
- Rule Lebanon 1973 1977 - May 1 0:00 1:00 S
- Rule Lebanon 1978 only - Apr 30 0:00 1:00 S
- Rule Lebanon 1978 only - Sep 30 0:00 0 -
- Rule Lebanon 1984 1987 - May 1 0:00 1:00 S
- Rule Lebanon 1984 1991 - Oct 16 0:00 0 -
- Rule Lebanon 1988 only - Jun 1 0:00 1:00 S
- Rule Lebanon 1989 only - May 10 0:00 1:00 S
- Rule Lebanon 1990 1992 - May 1 0:00 1:00 S
- Rule Lebanon 1992 only - Oct 4 0:00 0 -
- Rule Lebanon 1993 max - Mar lastSun 0:00 1:00 S
- Rule Lebanon 1993 1998 - Sep lastSun 0:00 0 -
- Rule Lebanon 1999 max - Oct lastSun 0:00 0 -
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Beirut 2:22:00 - LMT 1880
- 2:00 Lebanon EE%sT
- # Malaysia
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule NBorneo 1935 1941 - Sep 14 0:00 0:20 TS # one-Third Summer
- Rule NBorneo 1935 1941 - Dec 14 0:00 0 -
- #
- # peninsular Malaysia
- # taken from Mok Ly Yng (2003-10-30)
- # http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1
- 6:55:25 - SMT 1905 Jun 1 # Singapore M.T.
- 7:00 - MALT 1933 Jan 1 # Malaya Time
- 7:00 0:20 MALST 1936 Jan 1
- 7:20 - MALT 1941 Sep 1
- 7:30 - MALT 1942 Feb 16
- 9:00 - JST 1945 Sep 12
- 7:30 - MALT 1982 Jan 1
- 8:00 - MYT # Malaysia Time
- # Sabah & Sarawak
- # From Paul Eggert (2014-08-12):
- # The data entries here are mostly from Shanks & Pottenger, but the 1942, 1945
- # and 1982 transition dates are from Mok Ly Yng.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Kuching 7:21:20 - LMT 1926 Mar
- 7:30 - BORT 1933 # Borneo Time
- 8:00 NBorneo BOR%sT 1942 Feb 16
- 9:00 - JST 1945 Sep 12
- 8:00 - BORT 1982 Jan 1
- 8:00 - MYT
- # Maldives
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Indian/Maldives 4:54:00 - LMT 1880 # Male
- 4:54:00 - MMT 1960 # Male Mean Time
- 5:00 - MVT # Maldives Time
- # Mongolia
- # Shanks & Pottenger say that Mongolia has three time zones, but
- # The USNO (1995-12-21) and the CIA map Standard Time Zones of the World
- # (2005-03) both say that it has just one.
- # From Oscar van Vlijmen (1999-12-11):
- # General Information Mongolia
- # <http://www.mongoliatourism.gov.mn/general.htm> (1999-09)
- # "Time: Mongolia has two time zones. Three westernmost provinces of
- # Bayan-Ölgii, Uvs, and Hovd are one hour earlier than the capital city, and
- # the rest of the country follows the Ulaanbaatar time, which is UTC/GMT plus
- # eight hours."
- # From Rives McDow (1999-12-13):
- # Mongolia discontinued the use of daylight savings time in 1999; 1998
- # being the last year it was implemented. The dates of implementation I am
- # unsure of, but most probably it was similar to Russia, except for the time
- # of implementation may have been different....
- # Some maps in the past have indicated that there was an additional time
- # zone in the eastern part of Mongolia, including the provinces of Dornod,
- # Sükhbaatar, and possibly Khentii.
- # From Paul Eggert (1999-12-15):
- # Naming and spelling is tricky in Mongolia.
- # We'll use Hovd (also spelled Chovd and Khovd) to represent the west zone;
- # the capital of the Hovd province is sometimes called Hovd, sometimes Dund-Us,
- # and sometimes Jirgalanta (with variant spellings), but the name Hovd
- # is good enough for our purposes.
- # From Rives McDow (2001-05-13):
- # In addition to Mongolia starting daylight savings as reported earlier
- # (adopted DST on 2001-04-27 02:00 local time, ending 2001-09-28),
- # there are three time zones.
- #
- # Provinces [at 7:00]: Bayan-Ölgii, Uvs, Khovd, Zavkhan, Govi-Altai
- # Provinces [at 8:00]: Khövsgöl, Bulgan, Arkhangai, Khentii, Töv,
- # Bayankhongor, Övörkhangai, Dundgovi, Dornogovi, Ömnögovi
- # Provinces [at 9:00]: Dornod, Sükhbaatar
- #
- # [The province of Selenge is omitted from the above lists.]
- # From Ganbold Ts., Ulaanbaatar (2004-04-17):
- # Daylight saving occurs at 02:00 local time last Saturday of March.
- # It will change back to normal at 02:00 local time last Saturday of
- # September.... As I remember this rule was changed in 2001.
- #
- # From Paul Eggert (2004-04-17):
- # For now, assume Rives McDow's informant got confused about Friday vs
- # Saturday, and that his 2001 dates should have 1 added to them.
- # From Paul Eggert (2005-07-26):
- # We have wildly conflicting information about Mongolia's time zones.
- # Bill Bonnet (2005-05-19) reports that the US Embassy in Ulaanbaatar says
- # there is only one time zone and that DST is observed, citing Microsoft
- # Windows XP as the source. Risto Nykänen (2005-05-16) reports that
- # travelmongolia.org says there are two time zones (UTC+7, UTC+8) with no DST.
- # Oscar van Vlijmen (2005-05-20) reports that the Mongolian Embassy in
- # Washington, DC says there are two time zones, with DST observed.
- # He also found
- # http://ubpost.mongolnews.mn/index.php?subaction=showcomments&id=1111634894&archive=&start_from=&ucat=1&
- # which also says that there is DST, and which has a comment by "Toddius"
- # (2005-03-31 06:05 +0700) saying "Mongolia actually has 3.5 time zones.
- # The West (OLGII) is +7 GMT, most of the country is ULAT is +8 GMT
- # and some Eastern provinces are +9 GMT but Sükhbaatar Aimag is SUHK +8.5 GMT.
- # The SUKH timezone is new this year, it is one of the few things the
- # parliament passed during the tumultuous winter session."
- # For now, let's ignore this information, until we have more confirmation.
- # From Ganbold Ts. (2007-02-26):
- # Parliament of Mongolia has just changed the daylight-saving rule in February.
- # They decided not to adopt daylight-saving time....
- # http://www.mongolnews.mn/index.php?module=unuudur&sec=view&id=15742
- # From Deborah Goldsmith (2008-03-30):
- # We received a bug report claiming that the tz database UTC offset for
- # Asia/Choibalsan (GMT+09:00) is incorrect, and that it should be GMT
- # +08:00 instead. Different sources appear to disagree with the tz
- # database on this, e.g.:
- #
- # http://www.timeanddate.com/worldclock/city.html?n=1026
- # http://www.worldtimeserver.com/current_time_in_MN.aspx
- #
- # both say GMT+08:00.
- # From Steffen Thorsen (2008-03-31):
- # eznis airways, which operates several domestic flights, has a flight
- # schedule here:
- # http://www.eznis.com/Container.jsp?id=112
- # (click the English flag for English)
- #
- # There it appears that flights between Choibalsan and Ulaanbaatar arrive
- # about 1:35 - 1:50 hours later in local clock time, no matter the
- # direction, while Ulaanbaatar-Khovd takes 2 hours in the Eastern
- # direction and 3:35 back, which indicates that Ulaanbaatar and Khovd are
- # in different time zones (like we know about), while Choibalsan and
- # Ulaanbaatar are in the same time zone (correction needed).
- # From Arthur David Olson (2008-05-19):
- # Assume that Choibalsan is indeed offset by 8:00.
- # XXX--in the absence of better information, assume that transition
- # was at the start of 2008-03-31 (the day of Steffen Thorsen's report);
- # this is almost surely wrong.
- # From Ganbold Tsagaankhuu (2015-03-10):
- # It seems like yesterday Mongolian Government meeting has concluded to use
- # daylight saving time in Mongolia.... Starting at 2:00AM of last Saturday of
- # March 2015, daylight saving time starts. And 00:00AM of last Saturday of
- # September daylight saving time ends. Source:
- # http://zasag.mn/news/view/8969
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Mongol 1983 1984 - Apr 1 0:00 1:00 S
- Rule Mongol 1983 only - Oct 1 0:00 0 -
- # Shanks & Pottenger and IATA SSIM say 1990s switches occurred at 00:00,
- # but McDow says the 2001 switches occurred at 02:00. Also, IATA SSIM
- # (1996-09) says 1996-10-25. Go with Shanks & Pottenger through 1998.
- #
- # Shanks & Pottenger say that the Sept. 1984 through Sept. 1990 switches
- # in Choibalsan (more precisely, in Dornod and Sükhbaatar) took place
- # at 02:00 standard time, not at 00:00 local time as in the rest of
- # the country. That would be odd, and possibly is a result of their
- # correction of 02:00 (in the previous edition) not being done correctly
- # in the latest edition; so ignore it for now.
- Rule Mongol 1985 1998 - Mar lastSun 0:00 1:00 S
- Rule Mongol 1984 1998 - Sep lastSun 0:00 0 -
- # IATA SSIM (1999-09) says Mongolia no longer observes DST.
- Rule Mongol 2001 only - Apr lastSat 2:00 1:00 S
- Rule Mongol 2001 2006 - Sep lastSat 2:00 0 -
- Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 S
- Rule Mongol 2015 max - Mar lastSat 2:00 1:00 S
- Rule Mongol 2015 max - Sep lastSat 0:00 0 -
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- # Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta
- Zone Asia/Hovd 6:06:36 - LMT 1905 Aug
- 6:00 - HOVT 1978 # Hovd Time
- 7:00 Mongol HOV%sT
- # Ulaanbaatar, a.k.a. Ulan Bataar, Ulan Bator, Urga
- Zone Asia/Ulaanbaatar 7:07:32 - LMT 1905 Aug
- 7:00 - ULAT 1978 # Ulaanbaatar Time
- 8:00 Mongol ULA%sT
- # Choibalsan, a.k.a. Bajan Tümen, Bajan Tumen, Chojbalsan,
- # Choybalsan, Sanbejse, Tchoibalsan
- Zone Asia/Choibalsan 7:38:00 - LMT 1905 Aug
- 7:00 - ULAT 1978
- 8:00 - ULAT 1983 Apr
- 9:00 Mongol CHO%sT 2008 Mar 31 # Choibalsan Time
- 8:00 Mongol CHO%sT
- # Nepal
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Kathmandu 5:41:16 - LMT 1920
- 5:30 - IST 1986
- 5:45 - NPT # Nepal Time
- # Oman
- # See Asia/Dubai.
- # Pakistan
- # From Rives McDow (2002-03-13):
- # I have been advised that Pakistan has decided to adopt dst on a
- # TRIAL basis for one year, starting 00:01 local time on April 7, 2002
- # and ending at 00:01 local time October 6, 2002. This is what I was
- # told, but I believe that the actual time of change may be 00:00; the
- # 00:01 was to make it clear which day it was on.
- # From Paul Eggert (2002-03-15):
- # Jesper Nørgaard found this URL:
- # http://www.pak.gov.pk/public/news/app/app06_dec.htm
- # (dated 2001-12-06) which says that the Cabinet adopted a scheme "to
- # advance the clocks by one hour on the night between the first
- # Saturday and Sunday of April and revert to the original position on
- # 15th October each year". This agrees with McDow's 04-07 at 00:00,
- # but disagrees about the October transition, and makes it sound like
- # it's not on a trial basis. Also, the "between the first Saturday
- # and Sunday of April" phrase, if taken literally, means that the
- # transition takes place at 00:00 on the first Sunday on or after 04-02.
- # From Paul Eggert (2003-02-09):
- # DAWN <http://www.dawn.com/2002/10/06/top13.htm> reported on 2002-10-05
- # that 2002 DST ended that day at midnight. Go with McDow for now.
- # From Steffen Thorsen (2003-03-14):
- # According to http://www.dawn.com/2003/03/07/top15.htm
- # there will be no DST in Pakistan this year:
- #
- # ISLAMABAD, March 6: Information and Media Development Minister Sheikh
- # Rashid Ahmed on Thursday said the cabinet had reversed a previous
- # decision to advance clocks by one hour in summer and put them back by
- # one hour in winter with the aim of saving light hours and energy.
- #
- # The minister told a news conference that the experiment had rather
- # shown 8 per cent higher consumption of electricity.
- # From Alex Krivenyshev (2008-05-15):
- #
- # Here is an article that Pakistan plan to introduce Daylight Saving Time
- # on June 1, 2008 for 3 months.
- #
- # "... The federal cabinet on Wednesday announced a new conservation plan to
- # help reduce load shedding by approving the closure of commercial centres at
- # 9pm and moving clocks forward by one hour for the next three months. ...."
- #
- # http://www.worldtimezone.net/dst_news/dst_news_pakistan01.html
- # http://www.dailytimes.com.pk/default.asp?page=2008%5C05%5C15%5Cstory_15-5-2008_pg1_4
- # From Arthur David Olson (2008-05-19):
- # XXX--midnight transitions is a guess; 2008 only is a guess.
- # From Alexander Krivenyshev (2008-08-28):
- # Pakistan government has decided to keep the watches one-hour advanced
- # for another 2 months - plan to return to Standard Time on October 31
- # instead of August 31.
- #
- # http://www.worldtimezone.com/dst_news/dst_news_pakistan02.html
- # http://dailymailnews.com/200808/28/news/dmbrn03.html
- # From Alexander Krivenyshev (2009-04-08):
- # Based on previous media reports that "... proposed plan to
- # advance clocks by one hour from May 1 will cause disturbance
- # to the working schedules rather than bringing discipline in
- # official working."
- # http://www.thenews.com.pk/daily_detail.asp?id=171280
- #
- # recent news that instead of May 2009 - Pakistan plan to
- # introduce DST from April 15, 2009
- #
- # FYI: Associated Press Of Pakistan
- # April 08, 2009
- # Cabinet okays proposal to advance clocks by one hour from April 15
- # http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=73043&Itemid=1
- # http://www.worldtimezone.com/dst_news/dst_news_pakistan05.html
- #
- # ....
- # The Federal Cabinet on Wednesday approved the proposal to
- # advance clocks in the country by one hour from April 15 to
- # conserve energy"
- # From Steffen Thorsen (2009-09-17):
- # "The News International," Pakistan reports that: "The Federal
- # Government has decided to restore the previous time by moving the
- # clocks backward by one hour from October 1. A formal announcement to
- # this effect will be made after the Prime Minister grants approval in
- # this regard."
- # http://www.thenews.com.pk/updates.asp?id=87168
- # From Alexander Krivenyshev (2009-09-28):
- # According to Associated Press Of Pakistan, it is confirmed that
- # Pakistan clocks across the country would be turned back by an hour from
- # October 1, 2009.
- #
- # "Clocks to go back one hour from 1 Oct"
- # http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=86715&Itemid=2
- # http://www.worldtimezone.com/dst_news/dst_news_pakistan07.htm
- #
- # From Steffen Thorsen (2009-09-29):
- # Now they seem to have changed their mind, November 1 is the new date:
- # http://www.thenews.com.pk/top_story_detail.asp?Id=24742
- # "The country's clocks will be reversed by one hour on November 1.
- # Officials of Federal Ministry for Interior told this to Geo News on
- # Monday."
- #
- # And more importantly, it seems that these dates will be kept every year:
- # "It has now been decided that clocks will be wound forward by one hour
- # on April 15 and reversed by an hour on November 1 every year without
- # obtaining prior approval, the officials added."
- #
- # We have confirmed this year's end date with both with the Ministry of
- # Water and Power and the Pakistan Electric Power Company:
- # http://www.timeanddate.com/news/time/pakistan-ends-dst09.html
- # From Christoph Göhre (2009-10-01):
- # [T]he German Consulate General in Karachi reported me today that Pakistan
- # will go back to standard time on 1st of November.
- # From Steffen Thorsen (2010-03-26):
- # Steffen Thorsen wrote:
- # > On Thursday (2010-03-25) it was announced that DST would start in
- # > Pakistan on 2010-04-01.
- # >
- # > Then today, the president said that they might have to revert the
- # > decision if it is not supported by the parliament. So at the time
- # > being, it seems unclear if DST will be actually observed or not - but
- # > April 1 could be a more likely date than April 15.
- # Now, it seems that the decision to not observe DST in final:
- #
- # "Govt Withdraws Plan To Advance Clocks"
- # http://www.apakistannews.com/govt-withdraws-plan-to-advance-clocks-172041
- #
- # "People laud PM's announcement to end DST"
- # http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=99374&Itemid=2
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Pakistan 2002 only - Apr Sun>=2 0:01 1:00 S
- Rule Pakistan 2002 only - Oct Sun>=2 0:01 0 -
- Rule Pakistan 2008 only - Jun 1 0:00 1:00 S
- Rule Pakistan 2008 2009 - Nov 1 0:00 0 -
- Rule Pakistan 2009 only - Apr 15 0:00 1:00 S
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Karachi 4:28:12 - LMT 1907
- 5:30 - IST 1942 Sep
- 5:30 1:00 IST 1945 Oct 15
- 5:30 - IST 1951 Sep 30
- 5:00 - KART 1971 Mar 26 # Karachi Time
- 5:00 Pakistan PK%sT # Pakistan Time
- # Palestine
- # From Amos Shapir (1998-02-15):
- #
- # From 1917 until 1948-05-15, all of Palestine, including the parts now
- # known as the Gaza Strip and the West Bank, was under British rule.
- # Therefore the rules given for Israel for that period, apply there too...
- #
- # The Gaza Strip was under Egyptian rule between 1948-05-15 until 1967-06-05
- # (except a short occupation by Israel from 1956-11 till 1957-03, but no
- # time zone was affected then). It was never formally annexed to Egypt,
- # though.
- #
- # The rest of Palestine was under Jordanian rule at that time, formally
- # annexed in 1950 as the West Bank (and the word "Trans" was dropped from
- # the country's previous name of "the Hashemite Kingdom of the
- # Trans-Jordan"). So the rules for Jordan for that time apply. Major
- # towns in that area are Nablus (Shchem), El-Halil (Hebron), Ramallah, and
- # East Jerusalem.
- #
- # Both areas were occupied by Israel in June 1967, but not annexed (except
- # for East Jerusalem). They were on Israel time since then; there might
- # have been a Military Governor's order about time zones, but I'm not aware
- # of any (such orders may have been issued semi-annually whenever summer
- # time was in effect, but maybe the legal aspect of time was just neglected).
- #
- # The Palestinian Authority was established in 1993, and got hold of most
- # towns in the West Bank and Gaza by 1995. I know that in order to
- # demonstrate...independence, they have been switching to
- # summer time and back on a different schedule than Israel's, but I don't
- # know when this was started, or what algorithm is used (most likely the
- # Jordanian one).
- #
- # To summarize, the table should probably look something like that:
- #
- # Area \ when | 1918-1947 | 1948-1967 | 1967-1995 | 1996-
- # ------------+-----------+-----------+-----------+-----------
- # Israel | Zion | Zion | Zion | Zion
- # West bank | Zion | Jordan | Zion | Jordan
- # Gaza | Zion | Egypt | Zion | Jordan
- #
- # I guess more info may be available from the PA's web page (if/when they
- # have one).
- # From Paul Eggert (2006-03-22):
- # Shanks & Pottenger write that Gaza did not observe DST until 1957, but go
- # with Shapir and assume that it observed DST from 1940 through 1947,
- # and that it used Jordanian rules starting in 1996.
- # We don't yet need a separate entry for the West Bank, since
- # the only differences between it and Gaza that we know about
- # occurred before our cutoff date of 1970.
- # However, as we get more information, we may need to add entries
- # for parts of the West Bank as they transitioned from Israel's rules
- # to Palestine's rules.
- # From IINS News Service - Israel - 1998-03-23 10:38:07 Israel time,
- # forwarded by Ephraim Silverberg:
- #
- # Despite the fact that Israel changed over to daylight savings time
- # last week, the PLO Authority (PA) has decided not to turn its clocks
- # one-hour forward at this time. As a sign of independence from Israeli rule,
- # the PA has decided to implement DST in April.
- # From Paul Eggert (1999-09-20):
- # Daoud Kuttab writes in Holiday havoc
- # http://www.jpost.com/com/Archive/22.Apr.1999/Opinion/Article-2.html
- # (Jerusalem Post, 1999-04-22) that
- # the Palestinian National Authority changed to DST on 1999-04-15.
- # I vaguely recall that they switch back in October (sorry, forgot the source).
- # For now, let's assume that the spring switch was at 24:00,
- # and that they switch at 0:00 on the 3rd Fridays of April and October.
- # From Paul Eggert (2005-11-22):
- # Starting 2004 transitions are from Steffen Thorsen's web site timeanddate.com.
- # From Steffen Thorsen (2005-11-23):
- # A user from Gaza reported that Gaza made the change early because of
- # the Ramadan. Next year Ramadan will be even earlier, so I think
- # there is a good chance next year's end date will be around two weeks
- # earlier - the same goes for Jordan.
- # From Steffen Thorsen (2006-08-17):
- # I was informed by a user in Bethlehem that in Bethlehem it started the
- # same day as Israel, and after checking with other users in the area, I
- # was informed that they started DST one day after Israel. I was not
- # able to find any authoritative sources at the time, nor details if
- # Gaza changed as well, but presumed Gaza to follow the same rules as
- # the West Bank.
- # From Steffen Thorsen (2006-09-26):
- # according to the Palestine News Network (2006-09-19):
- # http://english.pnn.ps/index.php?option=com_content&task=view&id=596&Itemid=5
- # > The Council of Ministers announced that this year its winter schedule
- # > will begin early, as of midnight Thursday. It is also time to turn
- # > back the clocks for winter. Friday will begin an hour late this week.
- # I guess it is likely that next year's date will be moved as well,
- # because of the Ramadan.
- # From Jesper Nørgaard Welen (2007-09-18):
- # According to Steffen Thorsen's web site the Gaza Strip and the rest of the
- # Palestinian territories left DST early on 13.th. of September at 2:00.
- # From Paul Eggert (2007-09-20):
- # My understanding is that Gaza and the West Bank disagree even over when
- # the weekend is (Thursday+Friday versus Friday+Saturday), so I'd be a bit
- # surprised if they agreed about DST. But for now, assume they agree.
- # For lack of better information, predict that future changes will be
- # the 2nd Thursday of September at 02:00.
- # From Alexander Krivenyshev (2008-08-28):
- # Here is an article, that Mideast running on different clocks at Ramadan.
- #
- # Gaza Strip (as Egypt) ended DST at midnight Thursday (Aug 28, 2008), while
- # the West Bank will end Daylight Saving Time at midnight Sunday (Aug 31, 2008).
- #
- # http://www.guardian.co.uk/world/feedarticle/7759001
- # http://www.abcnews.go.com/International/wireStory?id=5676087
- # http://www.worldtimezone.com/dst_news/dst_news_gazastrip01.html
- # From Alexander Krivenyshev (2009-03-26):
- # According to the Palestine News Network (arabic.pnn.ps), Palestinian
- # government decided to start Daylight Time on Thursday night March
- # 26 and continue until the night of 27 September 2009.
- #
- # (in Arabic)
- # http://arabic.pnn.ps/index.php?option=com_content&task=view&id=50850
- #
- # (English translation)
- # http://www.worldtimezone.com/dst_news/dst_news_westbank01.html
- # From Steffen Thorsen (2009-08-31):
- # Palestine's Council of Ministers announced that they will revert back to
- # winter time on Friday, 2009-09-04.
- #
- # One news source:
- # http://www.safa.ps/ara/?action=showdetail&seid=4158
- # (Palestinian press agency, Arabic),
- # Google translate: "Decided that the Palestinian government in Ramallah
- # headed by Salam Fayyad, the start of work in time for the winter of
- # 2009, starting on Friday approved the fourth delay Sept. clock sixty
- # minutes per hour as of Friday morning."
- #
- # We are not sure if Gaza will do the same, last year they had a different
- # end date, we will keep this page updated:
- # http://www.timeanddate.com/news/time/westbank-gaza-dst-2009.html
- # From Alexander Krivenyshev (2009-09-02):
- # Seems that Gaza Strip will go back to Winter Time same date as West Bank.
- #
- # According to Palestinian Ministry Of Interior, West Bank and Gaza Strip plan
- # to change time back to Standard time on September 4, 2009.
- #
- # "Winter time unite the West Bank and Gaza"
- # (from Palestinian National Authority):
- # http://www.moi.gov.ps/en/?page=633167343250594025&nid=11505
- # http://www.worldtimezone.com/dst_news/dst_news_gazastrip02.html
- # From Alexander Krivenyshev (2010-03-19):
- # According to Voice of Palestine DST will last for 191 days, from March
- # 26, 2010 till "the last Sunday before the tenth day of Tishri
- # (October), each year" (October 03, 2010?)
- #
- # http://palvoice.org/forums/showthread.php?t=245697
- # (in Arabic)
- # http://www.worldtimezone.com/dst_news/dst_news_westbank03.html
- # From Steffen Thorsen (2010-03-24):
- # ...Ma'an News Agency reports that Hamas cabinet has decided it will
- # start one day later, at 12:01am. Not sure if they really mean 12:01am or
- # noon though:
- #
- # http://www.maannews.net/eng/ViewDetails.aspx?ID=271178
- # (Ma'an News Agency)
- # "At 12:01am Friday, clocks in Israel and the West Bank will change to
- # 1:01am, while Gaza clocks will change at 12:01am Saturday morning."
- # From Steffen Thorsen (2010-08-11):
- # According to several sources, including
- # http://www.maannews.net/eng/ViewDetails.aspx?ID=306795
- # the clocks were set back one hour at 2010-08-11 00:00:00 local time in
- # Gaza and the West Bank.
- # Some more background info:
- # http://www.timeanddate.com/news/time/westbank-gaza-end-dst-2010.html
- # From Steffen Thorsen (2011-08-26):
- # Gaza and the West Bank did go back to standard time in the beginning of
- # August, and will now enter daylight saving time again on 2011-08-30
- # 00:00 (so two periods of DST in 2011). The pause was because of
- # Ramadan.
- #
- # http://www.maannews.net/eng/ViewDetails.aspx?ID=416217
- # Additional info:
- # http://www.timeanddate.com/news/time/palestine-dst-2011.html
- # From Alexander Krivenyshev (2011-08-27):
- # According to the article in The Jerusalem Post:
- # "...Earlier this month, the Palestinian government in the West Bank decided to
- # move to standard time for 30 days, during Ramadan. The Palestinians in the
- # Gaza Strip accepted the change and also moved their clocks one hour back.
- # The Hamas government said on Saturday that it won't observe summertime after
- # the Muslim feast of Id al-Fitr, which begins on Tuesday..."
- # ...
- # http://www.jpost.com/MiddleEast/Article.aspx?id=235650
- # http://www.worldtimezone.com/dst_news/dst_news_gazastrip05.html
- # The rules for Egypt are stolen from the 'africa' file.
- # From Steffen Thorsen (2011-09-30):
- # West Bank did end Daylight Saving Time this morning/midnight (2011-09-30
- # 00:00).
- # So West Bank and Gaza now have the same time again.
- #
- # Many sources, including:
- # http://www.maannews.net/eng/ViewDetails.aspx?ID=424808
- # From Steffen Thorsen (2012-03-26):
- # Palestinian news sources tell that both Gaza and West Bank will start DST
- # on Friday (Thursday midnight, 2012-03-29 24:00).
- # Some of many sources in Arabic:
- # http://www.samanews.com/index.php?act=Show&id=122638
- #
- # 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
- #
- # Our brief summary:
- # http://www.timeanddate.com/news/time/gaza-west-bank-dst-2012.html
- # From Steffen Thorsen (2013-03-26):
- # The following news sources tells that Palestine will "start daylight saving
- # time from midnight on Friday, March 29, 2013" (translated).
- # [These are in Arabic and are for Gaza and for Ramallah, respectively.]
- # http://www.samanews.com/index.php?act=Show&id=154120
- # 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
- # From Steffen Thorsen (2013-09-24):
- # The Gaza and West Bank are ending DST Thursday at midnight
- # (2013-09-27 00:00:00) (one hour earlier than last year...).
- # This source in English, says "that winter time will go into effect
- # at midnight on Thursday in the West Bank and Gaza Strip":
- # http://english.wafa.ps/index.php?action=detail&id=23246
- # official source...:
- # http://www.palestinecabinet.gov.ps/ar/Views/ViewDetails.aspx?pid=1252
- # From Steffen Thorsen (2015-03-03):
- # Sources such as http://www.alquds.com/news/article/view/id/548257
- # and http://www.raya.ps/ar/news/890705.html say Palestine areas will
- # start DST on 2015-03-28 00:00 which is one day later than expected.
- #
- # From Paul Eggert (2015-03-03):
- # http://www.timeanddate.com/time/change/west-bank/ramallah?year=2014
- # says that the fall 2014 transition was Oct 23 at 24:00.
- # For future dates, guess the last Friday in March at 24:00 through
- # the first Friday on or after October 21 at 00:00. This is consistent with
- # the predictions in today's editions of the following URLs:
- # http://www.timeanddate.com/time/change/gaza-strip/gaza
- # http://www.timeanddate.com/time/change/west-bank/hebron
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule EgyptAsia 1957 only - May 10 0:00 1:00 S
- Rule EgyptAsia 1957 1958 - Oct 1 0:00 0 -
- Rule EgyptAsia 1958 only - May 1 0:00 1:00 S
- Rule EgyptAsia 1959 1967 - May 1 1:00 1:00 S
- Rule EgyptAsia 1959 1965 - Sep 30 3:00 0 -
- Rule EgyptAsia 1966 only - Oct 1 3:00 0 -
- Rule Palestine 1999 2005 - Apr Fri>=15 0:00 1:00 S
- Rule Palestine 1999 2003 - Oct Fri>=15 0:00 0 -
- Rule Palestine 2004 only - Oct 1 1:00 0 -
- Rule Palestine 2005 only - Oct 4 2:00 0 -
- Rule Palestine 2006 2007 - Apr 1 0:00 1:00 S
- Rule Palestine 2006 only - Sep 22 0:00 0 -
- Rule Palestine 2007 only - Sep Thu>=8 2:00 0 -
- Rule Palestine 2008 2009 - Mar lastFri 0:00 1:00 S
- Rule Palestine 2008 only - Sep 1 0:00 0 -
- Rule Palestine 2009 only - Sep Fri>=1 1:00 0 -
- Rule Palestine 2010 only - Mar 26 0:00 1:00 S
- Rule Palestine 2010 only - Aug 11 0:00 0 -
- Rule Palestine 2011 only - Apr 1 0:01 1:00 S
- Rule Palestine 2011 only - Aug 1 0:00 0 -
- Rule Palestine 2011 only - Aug 30 0:00 1:00 S
- Rule Palestine 2011 only - Sep 30 0:00 0 -
- Rule Palestine 2012 2014 - Mar lastThu 24:00 1:00 S
- Rule Palestine 2012 only - Sep 21 1:00 0 -
- Rule Palestine 2013 only - Sep Fri>=21 0:00 0 -
- Rule Palestine 2014 max - Oct Fri>=21 0:00 0 -
- Rule Palestine 2015 max - Mar lastFri 24:00 1:00 S
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Gaza 2:17:52 - LMT 1900 Oct
- 2:00 Zion EET 1948 May 15
- 2:00 EgyptAsia EE%sT 1967 Jun 5
- 2:00 Zion I%sT 1996
- 2:00 Jordan EE%sT 1999
- 2:00 Palestine EE%sT 2008 Aug 29 0:00
- 2:00 - EET 2008 Sep
- 2:00 Palestine EE%sT 2010
- 2:00 - EET 2010 Mar 27 0:01
- 2:00 Palestine EE%sT 2011 Aug 1
- 2:00 - EET 2012
- 2:00 Palestine EE%sT
- Zone Asia/Hebron 2:20:23 - LMT 1900 Oct
- 2:00 Zion EET 1948 May 15
- 2:00 EgyptAsia EE%sT 1967 Jun 5
- 2:00 Zion I%sT 1996
- 2:00 Jordan EE%sT 1999
- 2:00 Palestine EE%sT
- # Paracel Is
- # no information
- # Philippines
- # On 1844-08-16, Narciso Clavería, governor-general of the
- # Philippines, issued a proclamation announcing that 1844-12-30 was to
- # be immediately followed by 1845-01-01; see R.H. van Gent's
- # History of the International Date Line
- # http://www.staff.science.uu.nl/~gent0113/idl/idl_philippines.htm
- # The rest of the data entries are from Shanks & Pottenger.
- # From Jesper Nørgaard Welen (2006-04-26):
- # ... claims that Philippines had DST last time in 1990:
- # http://story.philippinetimes.com/p.x/ct/9/id/145be20cc6b121c0/cid/3e5bbccc730d258c/
- # [a story dated 2006-04-25 by Cris Larano of Dow Jones Newswires,
- # but no details]
- # From Paul Eggert (2014-08-14):
- # The following source says DST may be instituted November-January and again
- # March-June, but this is not definite. It also says DST was last proclaimed
- # during the Ramos administration (1992-1998); but again, no details.
- # Carcamo D. PNoy urged to declare use of daylight saving time.
- # Philippine Star 2014-08-05
- # http://www.philstar.com/headlines/2014/08/05/1354152/pnoy-urged-declare-use-daylight-saving-time
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Phil 1936 only - Nov 1 0:00 1:00 S
- Rule Phil 1937 only - Feb 1 0:00 0 -
- Rule Phil 1954 only - Apr 12 0:00 1:00 S
- Rule Phil 1954 only - Jul 1 0:00 0 -
- Rule Phil 1978 only - Mar 22 0:00 1:00 S
- Rule Phil 1978 only - Sep 21 0:00 0 -
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31
- 8:04:00 - LMT 1899 May 11
- 8:00 Phil PH%sT 1942 May
- 9:00 - JST 1944 Nov
- 8:00 Phil PH%sT
- # Qatar
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha
- 4:00 - GST 1972 Jun
- 3:00 - AST
- Link Asia/Qatar Asia/Bahrain
- # Saudi Arabia
- #
- # From Paul Eggert (2014-07-15):
- # Time in Saudi Arabia and other countries in the Arabian peninsula was not
- # standardized until relatively recently; we don't know when, and possibly it
- # has never been made official. Richard P Hunt, in "Islam city yielding to
- # modern times", New York Times (1961-04-09), p 20, wrote that only airlines
- # observed standard time, and that people in Jeddah mostly observed quasi-solar
- # time, doing so by setting their watches at sunrise to 6 o'clock (or to 12
- # o'clock for "Arab" time).
- #
- # The TZ database cannot represent quasi-solar time; airline time is the best
- # we can do. The 1946 foreign air news digest of the U.S. Civil Aeronautics
- # Board (OCLC 42299995) reported that the "... Arabian Government, inaugurated
- # a weekly Dhahran-Cairo service, via the Saudi Arabian cities of Riyadh and
- # Jidda, on March 14, 1947". Shanks & Pottenger guessed 1950; go with the
- # earlier date.
- #
- # Shanks & Pottenger also state that until 1968-05-01 Saudi Arabia had two
- # time zones; the other zone, at UTC+4, was in the far eastern part of
- # the country. Ignore this, as it's before our 1970 cutoff.
- #
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14
- 3:00 - AST
- Link Asia/Riyadh Asia/Aden # Yemen
- Link Asia/Riyadh Asia/Kuwait
- # Singapore
- # taken from Mok Ly Yng (2003-10-30)
- # http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1
- 6:55:25 - SMT 1905 Jun 1 # Singapore M.T.
- 7:00 - MALT 1933 Jan 1 # Malaya Time
- 7:00 0:20 MALST 1936 Jan 1
- 7:20 - MALT 1941 Sep 1
- 7:30 - MALT 1942 Feb 16
- 9:00 - JST 1945 Sep 12
- 7:30 - MALT 1965 Aug 9 # independence
- 7:30 - SGT 1982 Jan 1 # Singapore Time
- 8:00 - SGT
- # Spratly Is
- # no information
- # Sri Lanka
- # From Paul Eggert (2013-02-21):
- # Milne says "Madras mean time use from May 1, 1898. Prior to this Colombo
- # mean time, 5h. 4m. 21.9s. F., was used." But 5:04:21.9 differs considerably
- # from Colombo's meridian 5:19:24, so for now ignore Milne and stick with
- # Shanks and Pottenger.
- # From Paul Eggert (1996-09-03):
- # "Sri Lanka advances clock by an hour to avoid blackout"
- # (<http://www.virtual-pc.com/lankaweb/news/items/240596-2.html>, 1996-05-24,
- # no longer available as of 1999-08-17)
- # reported "the country's standard time will be put forward by one hour at
- # midnight Friday (1830 GMT) 'in the light of the present power crisis'."
- #
- # From Dharmasiri Senanayake, Sri Lanka Media Minister (1996-10-24), as quoted
- # by Shamindra in Daily News - Hot News Section
- # <news:54rka5$m5h@mtinsc01-mgt.ops.worldnet.att.net> (1996-10-26):
- # With effect from 12.30 a.m. on 26th October 1996
- # Sri Lanka will be six (06) hours ahead of GMT.
- # From Jesper Nørgaard Welen (2006-04-14), quoting Sri Lanka News Online
- # <http://news.sinhalaya.com/wmview.php?ArtID=11002> (2006-04-13):
- # 0030 hrs on April 15, 2006 (midnight of April 14, 2006 +30 minutes)
- # at present, become 2400 hours of April 14, 2006 (midnight of April 14, 2006).
- # From Peter Apps and Ranga Sirila of Reuters (2006-04-12) in:
- # http://today.reuters.co.uk/news/newsArticle.aspx?type=scienceNews&storyID=2006-04-12T172228Z_01_COL295762_RTRIDST_0_SCIENCE-SRILANKA-TIME-DC.XML
- # [The Tamil Tigers] never accepted the original 1996 time change and simply
- # kept their clocks set five and a half hours ahead of Greenwich Mean
- # Time (GMT), in line with neighbor India.
- # From Paul Eggert (2006-04-18):
- # People who live in regions under Tamil control can use [TZ='Asia/Kolkata'],
- # as that zone has agreed with the Tamil areas since our cutoff date of 1970.
- # From K Sethu (2006-04-25):
- # I think the abbreviation LKT originated from the world of computers at
- # the time of or subsequent to the time zone changes by SL Government
- # twice in 1996 and probably SL Government or its standardization
- # agencies never declared an abbreviation as a national standard.
- #
- # I recollect before the recent change the government announcements
- # mentioning it as simply changing Sri Lanka Standard Time or Sri Lanka
- # Time and no mention was made about the abbreviation.
- #
- # If we look at Sri Lanka Department of Government's "Official News
- # Website of Sri Lanka" ... http://www.news.lk/ we can see that they
- # use SLT as abbreviation in time stamp at the beginning of each news
- # item....
- #
- # Within Sri Lanka I think LKT is well known among computer users and
- # administrators. In my opinion SLT may not be a good choice because the
- # nation's largest telcom / internet operator Sri Lanka Telcom is well
- # known by that abbreviation - simply as SLT (there IP domains are
- # slt.lk and sltnet.lk).
- #
- # But if indeed our government has adopted SLT as standard abbreviation
- # (that we have not known so far) then it is better that it be used for
- # all computers.
- # From Paul Eggert (2006-04-25):
- # One possibility is that we wait for a bit for the dust to settle down
- # and then see what people actually say in practice.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Colombo 5:19:24 - LMT 1880
- 5:19:32 - MMT 1906 # Moratuwa Mean Time
- 5:30 - IST 1942 Jan 5
- 5:30 0:30 IHST 1942 Sep
- 5:30 1:00 IST 1945 Oct 16 2:00
- 5:30 - IST 1996 May 25 0:00
- 6:30 - LKT 1996 Oct 26 0:30
- 6:00 - LKT 2006 Apr 15 0:30
- 5:30 - IST
- # Syria
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Syria 1920 1923 - Apr Sun>=15 2:00 1:00 S
- Rule Syria 1920 1923 - Oct Sun>=1 2:00 0 -
- Rule Syria 1962 only - Apr 29 2:00 1:00 S
- Rule Syria 1962 only - Oct 1 2:00 0 -
- Rule Syria 1963 1965 - May 1 2:00 1:00 S
- Rule Syria 1963 only - Sep 30 2:00 0 -
- Rule Syria 1964 only - Oct 1 2:00 0 -
- Rule Syria 1965 only - Sep 30 2:00 0 -
- Rule Syria 1966 only - Apr 24 2:00 1:00 S
- Rule Syria 1966 1976 - Oct 1 2:00 0 -
- Rule Syria 1967 1978 - May 1 2:00 1:00 S
- Rule Syria 1977 1978 - Sep 1 2:00 0 -
- Rule Syria 1983 1984 - Apr 9 2:00 1:00 S
- Rule Syria 1983 1984 - Oct 1 2:00 0 -
- Rule Syria 1986 only - Feb 16 2:00 1:00 S
- Rule Syria 1986 only - Oct 9 2:00 0 -
- Rule Syria 1987 only - Mar 1 2:00 1:00 S
- Rule Syria 1987 1988 - Oct 31 2:00 0 -
- Rule Syria 1988 only - Mar 15 2:00 1:00 S
- Rule Syria 1989 only - Mar 31 2:00 1:00 S
- Rule Syria 1989 only - Oct 1 2:00 0 -
- Rule Syria 1990 only - Apr 1 2:00 1:00 S
- Rule Syria 1990 only - Sep 30 2:00 0 -
- Rule Syria 1991 only - Apr 1 0:00 1:00 S
- Rule Syria 1991 1992 - Oct 1 0:00 0 -
- Rule Syria 1992 only - Apr 8 0:00 1:00 S
- Rule Syria 1993 only - Mar 26 0:00 1:00 S
- Rule Syria 1993 only - Sep 25 0:00 0 -
- # IATA SSIM (1998-02) says 1998-04-02;
- # (1998-09) says 1999-03-29 and 1999-09-29; (1999-02) says 1999-04-02,
- # 2000-04-02, and 2001-04-02; (1999-09) says 2000-03-31 and 2001-03-31;
- # (2006) says 2006-03-31 and 2006-09-22;
- # for now ignore all these claims and go with Shanks & Pottenger,
- # except for the 2006-09-22 claim (which seems right for Ramadan).
- Rule Syria 1994 1996 - Apr 1 0:00 1:00 S
- Rule Syria 1994 2005 - Oct 1 0:00 0 -
- Rule Syria 1997 1998 - Mar lastMon 0:00 1:00 S
- Rule Syria 1999 2006 - Apr 1 0:00 1:00 S
- # From Stephen Colebourne (2006-09-18):
- # According to IATA data, Syria will change DST on 21st September [21:00 UTC]
- # this year [only].... This is probably related to Ramadan, like Egypt.
- Rule Syria 2006 only - Sep 22 0:00 0 -
- # From Paul Eggert (2007-03-29):
- # Today the AP reported "Syria will switch to summertime at midnight Thursday."
- # http://www.iht.com/articles/ap/2007/03/29/africa/ME-GEN-Syria-Time-Change.php
- Rule Syria 2007 only - Mar lastFri 0:00 1:00 S
- # From Jesper Nørgaard (2007-10-27):
- # The sister center ICARDA of my work CIMMYT is confirming that Syria DST will
- # not take place 1st November at 0:00 o'clock but 1st November at 24:00 or
- # rather Midnight between Thursday and Friday. This does make more sense than
- # having it between Wednesday and Thursday (two workdays in Syria) since the
- # weekend in Syria is not Saturday and Sunday, but Friday and Saturday. So now
- # it is implemented at midnight of the last workday before weekend...
- #
- # From Steffen Thorsen (2007-10-27):
- # Jesper Nørgaard Welen wrote:
- #
- # > "Winter local time in Syria will be observed at midnight of Thursday 1
- # > November 2007, and the clock will be put back 1 hour."
- #
- # I found confirmation on this in this gov.sy-article (Arabic):
- # http://wehda.alwehda.gov.sy/_print_veiw.asp?FileName=12521710520070926111247
- #
- # which using Google's translate tools says:
- # Council of Ministers also approved the commencement of work on
- # identifying the winter time as of Friday, 2/11/2007 where the 60th
- # minute delay at midnight Thursday 1/11/2007.
- Rule Syria 2007 only - Nov Fri>=1 0:00 0 -
- # From Stephen Colebourne (2008-03-17):
- # For everyone's info, I saw an IATA time zone change for [Syria] for
- # this month (March 2008) in the last day or so....
- # Country Time Standard --- DST Start --- --- DST End --- DST
- # Name Zone Variation Time Date Time Date
- # Variation
- # Syrian Arab
- # Republic SY +0200 2200 03APR08 2100 30SEP08 +0300
- # 2200 02APR09 2100 30SEP09 +0300
- # 2200 01APR10 2100 30SEP10 +0300
- # From Arthur David Olson (2008-03-17):
- # Here's a link to English-language coverage by the Syrian Arab News
- # Agency (SANA)...
- # http://www.sana.sy/eng/21/2008/03/11/165173.htm
- # ...which reads (in part) "The Cabinet approved the suggestion of the
- # Ministry of Electricity to begin daylight savings time on Friday April
- # 4th, advancing clocks one hour ahead on midnight of Thursday April 3rd."
- # Since Syria is two hours east of UTC, the 2200 and 2100 transition times
- # shown above match up with midnight in Syria.
- # From Arthur David Olson (2008-03-18):
- # My best guess at a Syrian rule is "the Friday nearest April 1";
- # coding that involves either using a "Mar Fri>=29" construct that old time zone
- # compilers can't handle or having multiple Rules (a la Israel).
- # For now, use "Apr Fri>=1", and go with IATA on a uniform Sep 30 end.
- # From Steffen Thorsen (2008-10-07):
- # Syria has now officially decided to end DST on 2008-11-01 this year,
- # according to the following article in the Syrian Arab News Agency (SANA).
- #
- # The article is in Arabic, and seems to tell that they will go back to
- # winter time on 2008-11-01 at 00:00 local daylight time (delaying/setting
- # clocks back 60 minutes).
- #
- # http://sana.sy/ara/2/2008/10/07/195459.htm
- # From Steffen Thorsen (2009-03-19):
- # Syria will start DST on 2009-03-27 00:00 this year according to many sources,
- # two examples:
- #
- # http://www.sana.sy/eng/21/2009/03/17/217563.htm
- # (English, Syrian Arab News # Agency)
- # http://thawra.alwehda.gov.sy/_View_news2.asp?FileName=94459258720090318012209
- # (Arabic, gov-site)
- #
- # We have not found any sources saying anything about when DST ends this year.
- #
- # Our summary
- # http://www.timeanddate.com/news/time/syria-dst-starts-march-27-2009.html
- # From Steffen Thorsen (2009-10-27):
- # The Syrian Arab News Network on 2009-09-29 reported that Syria will
- # revert back to winter (standard) time on midnight between Thursday
- # 2009-10-29 and Friday 2009-10-30:
- # http://www.sana.sy/ara/2/2009/09/29/247012.htm (Arabic)
- # From Arthur David Olson (2009-10-28):
- # We'll see if future DST switching times turn out to be end of the last
- # Thursday of the month or the start of the last Friday of the month or
- # something else. For now, use the start of the last Friday.
- # From Steffen Thorsen (2010-03-17):
- # The "Syrian News Station" reported on 2010-03-16 that the Council of
- # Ministers has decided that Syria will start DST on midnight Thursday
- # 2010-04-01: (midnight between Thursday and Friday):
- # http://sns.sy/sns/?path=news/read/11421 (Arabic)
- # From Steffen Thorsen (2012-03-26):
- # Today, Syria's government announced that they will start DST early on Friday
- # (00:00). This is a bit earlier than the past two years.
- #
- # From Syrian Arab News Agency, in Arabic:
- # http://www.sana.sy/ara/2/2012/03/26/408215.htm
- #
- # Our brief summary:
- # http://www.timeanddate.com/news/time/syria-dst-2012.html
- # From Arthur David Olson (2012-03-27):
- # Assume last Friday in March going forward XXX.
- Rule Syria 2008 only - Apr Fri>=1 0:00 1:00 S
- Rule Syria 2008 only - Nov 1 0:00 0 -
- Rule Syria 2009 only - Mar lastFri 0:00 1:00 S
- Rule Syria 2010 2011 - Apr Fri>=1 0:00 1:00 S
- Rule Syria 2012 max - Mar lastFri 0:00 1:00 S
- Rule Syria 2009 max - Oct lastFri 0:00 0 -
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq
- 2:00 Syria EE%sT
- # Tajikistan
- # From Shanks & Pottenger.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2
- 5:00 - DUST 1930 Jun 21 # Dushanbe Time
- 6:00 RussiaAsia DUS%sT 1991 Mar 31 2:00s
- 5:00 1:00 DUSST 1991 Sep 9 2:00s
- 5:00 - TJT # Tajikistan Time
- # Thailand
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Bangkok 6:42:04 - LMT 1880
- 6:42:04 - BMT 1920 Apr # Bangkok Mean Time
- 7:00 - ICT
- Link Asia/Bangkok Asia/Phnom_Penh # Cambodia
- Link Asia/Bangkok Asia/Vientiane # Laos
- # Turkmenistan
- # From Shanks & Pottenger.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad
- 4:00 - ASHT 1930 Jun 21 # Ashkhabad Time
- 5:00 RussiaAsia ASH%sT 1991 Mar 31 2:00
- 4:00 RussiaAsia ASH%sT 1991 Oct 27 # independence
- 4:00 RussiaAsia TM%sT 1992 Jan 19 2:00
- 5:00 - TMT
- # United Arab Emirates
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Dubai 3:41:12 - LMT 1920
- 4:00 - GST
- Link Asia/Dubai Asia/Muscat # Oman
- # Uzbekistan
- # Byalokoz 1919 says Uzbekistan was 4:27:53.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Samarkand 4:27:53 - LMT 1924 May 2
- 4:00 - SAMT 1930 Jun 21 # Samarkand Time
- 5:00 - SAMT 1981 Apr 1
- 5:00 1:00 SAMST 1981 Oct 1
- 6:00 - TAST 1982 Apr 1 # Tashkent Time
- 5:00 RussiaAsia SAM%sT 1991 Sep 1 # independence
- 5:00 RussiaAsia UZ%sT 1992
- 5:00 - UZT
- # Milne says Tashkent was 4:37:10.8; round to nearest.
- Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2
- 5:00 - TAST 1930 Jun 21 # Tashkent Time
- 6:00 RussiaAsia TAS%sT 1991 Mar 31 2:00
- 5:00 RussiaAsia TAS%sT 1991 Sep 1 # independence
- 5:00 RussiaAsia UZ%sT 1992
- 5:00 - UZT
- # Vietnam
- # From Paul Eggert (2014-10-04):
- # Milne gives 7:16:56 for the meridian of Saigon in 1899, as being
- # used in Lower Laos, Cambodia, and Annam. But this is quite a ways
- # from Saigon's location. For now, ignore this and stick with Shanks
- # and Pottenger for LMT before 1906.
- # From Arthur David Olson (2008-03-18):
- # The English-language name of Vietnam's most populous city is "Ho Chi Minh
- # City"; use Ho_Chi_Minh below to avoid a name of more than 14 characters.
- # From Paul Eggert (2014-10-21) after a heads-up from Trần Ngọc Quân:
- # Trần Tiến Bình's authoritative book "Lịch Việt Nam: thế kỷ XX-XXI (1901-2100)"
- # (Nhà xuất bản Văn Hoá - Thông Tin, Hanoi, 2005), pp 49-50,
- # is quoted verbatim in:
- # http://www.thoigian.com.vn/?mPage=P80D01
- # is translated by Brian Inglis in:
- # http://mm.icann.org/pipermail/tz/2014-October/021654.html
- # and is the basis for the information below.
- #
- # The 1906 transition was effective July 1 and standardized Indochina to
- # Phù Liễn Observatory, legally 104 deg. 17'17" east of Paris.
- # It's unclear whether this meant legal Paris Mean Time (00:09:21) or
- # the Paris Meridian (2 deg. 20'14.03" E); the former yields 07:06:30.1333...
- # and the latter 07:06:29.333... so either way it rounds to 07:06:30,
- # which is used below even though the modern-day Phù Liễn Observatory
- # is closer to 07:06:31. Abbreviate Phù Liễn Mean Time as PLMT.
- #
- # The following transitions occurred in Indochina in general (before 1954)
- # and in South Vietnam in particular (after 1954):
- # To 07:00 on 1911-05-01.
- # To 08:00 on 1942-12-31 at 23:00.
- # To 09:00 in 1945-03-14 at 23:00.
- # To 07:00 on 1945-09-02 in Vietnam.
- # To 08:00 on 1947-04-01 in French-controlled Indochina.
- # To 07:00 on 1955-07-01 in South Vietnam.
- # To 08:00 on 1959-12-31 at 23:00 in South Vietnam.
- # To 07:00 on 1975-06-13 in South Vietnam.
- #
- # Trần cites the following sources; it's unclear which supplied the info above.
- #
- # Hoàng Xuân Hãn: "Lịch và lịch Việt Nam". Tập san Khoa học Xã hội,
- # No. 9, Paris, February 1982.
- #
- # Lê Thành Lân: "Lịch và niên biểu lịch sử hai mươi thế kỷ (0001-2010)",
- # NXB Thống kê, Hanoi, 2000.
- #
- # Lê Thành Lân: "Lịch hai thế kỷ (1802-2010) và các lịch vĩnh cửu",
- # NXB Thuận Hoá, Huế, 1995.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Asia/Ho_Chi_Minh 7:06:40 - LMT 1906 Jul 1
- 7:06:30 - PLMT 1911 May 1
- 7:00 - ICT 1942 Dec 31 23:00
- 8:00 - IDT 1945 Mar 14 23:00
- 9:00 - JST 1945 Sep 2
- 7:00 - ICT 1947 Apr 1
- 8:00 - IDT 1955 Jul 1
- 7:00 - ICT 1959 Dec 31 23:00
- 8:00 - IDT 1975 Jun 13
- 7:00 - ICT
- # Yemen
- # See Asia/Riyadh.
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