australasia 72 KB

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  1. # This file is in the public domain, so clarified as of
  2. # 2009-05-17 by Arthur David Olson.
  3. # This file also includes Pacific islands.
  4. # Notes are at the end of this file
  5. ###############################################################################
  6. # Australia
  7. # Please see the notes below for the controversy about "EST" versus "AEST" etc.
  8. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  9. Rule Aus 1917 only - Jan 1 0:01 1:00 D
  10. Rule Aus 1917 only - Mar 25 2:00 0 S
  11. Rule Aus 1942 only - Jan 1 2:00 1:00 D
  12. Rule Aus 1942 only - Mar 29 2:00 0 S
  13. Rule Aus 1942 only - Sep 27 2:00 1:00 D
  14. Rule Aus 1943 1944 - Mar lastSun 2:00 0 S
  15. Rule Aus 1943 only - Oct 3 2:00 1:00 D
  16. # Go with Whitman and the Australian National Standards Commission, which
  17. # says W Australia didn't use DST in 1943/1944. Ignore Whitman's claim that
  18. # 1944/1945 was just like 1943/1944.
  19. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  20. # Northern Territory
  21. Zone Australia/Darwin 8:43:20 - LMT 1895 Feb
  22. 9:00 - ACST 1899 May
  23. 9:30 Aus AC%sT
  24. # Western Australia
  25. #
  26. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  27. Rule AW 1974 only - Oct lastSun 2:00s 1:00 D
  28. Rule AW 1975 only - Mar Sun>=1 2:00s 0 S
  29. Rule AW 1983 only - Oct lastSun 2:00s 1:00 D
  30. Rule AW 1984 only - Mar Sun>=1 2:00s 0 S
  31. Rule AW 1991 only - Nov 17 2:00s 1:00 D
  32. Rule AW 1992 only - Mar Sun>=1 2:00s 0 S
  33. Rule AW 2006 only - Dec 3 2:00s 1:00 D
  34. Rule AW 2007 2009 - Mar lastSun 2:00s 0 S
  35. Rule AW 2007 2008 - Oct lastSun 2:00s 1:00 D
  36. Zone Australia/Perth 7:43:24 - LMT 1895 Dec
  37. 8:00 Aus AW%sT 1943 Jul
  38. 8:00 AW AW%sT
  39. Zone Australia/Eucla 8:35:28 - LMT 1895 Dec
  40. 8:45 Aus ACW%sT 1943 Jul
  41. 8:45 AW ACW%sT
  42. # Queensland
  43. #
  44. # From Alex Livingston (1996-11-01):
  45. # I have heard or read more than once that some resort islands off the coast
  46. # of Queensland chose to keep observing daylight-saving time even after
  47. # Queensland ceased to.
  48. #
  49. # From Paul Eggert (1996-11-22):
  50. # IATA SSIM (1993-02/1994-09) say that the Holiday Islands (Hayman, Lindeman,
  51. # Hamilton) observed DST for two years after the rest of Queensland stopped.
  52. # Hamilton is the largest, but there is also a Hamilton in Victoria,
  53. # so use Lindeman.
  54. #
  55. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  56. Rule AQ 1971 only - Oct lastSun 2:00s 1:00 D
  57. Rule AQ 1972 only - Feb lastSun 2:00s 0 S
  58. Rule AQ 1989 1991 - Oct lastSun 2:00s 1:00 D
  59. Rule AQ 1990 1992 - Mar Sun>=1 2:00s 0 S
  60. Rule Holiday 1992 1993 - Oct lastSun 2:00s 1:00 D
  61. Rule Holiday 1993 1994 - Mar Sun>=1 2:00s 0 S
  62. Zone Australia/Brisbane 10:12:08 - LMT 1895
  63. 10:00 Aus AE%sT 1971
  64. 10:00 AQ AE%sT
  65. Zone Australia/Lindeman 9:55:56 - LMT 1895
  66. 10:00 Aus AE%sT 1971
  67. 10:00 AQ AE%sT 1992 Jul
  68. 10:00 Holiday AE%sT
  69. # South Australia
  70. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  71. Rule AS 1971 1985 - Oct lastSun 2:00s 1:00 D
  72. Rule AS 1986 only - Oct 19 2:00s 1:00 D
  73. Rule AS 1987 2007 - Oct lastSun 2:00s 1:00 D
  74. Rule AS 1972 only - Feb 27 2:00s 0 S
  75. Rule AS 1973 1985 - Mar Sun>=1 2:00s 0 S
  76. Rule AS 1986 1990 - Mar Sun>=15 2:00s 0 S
  77. Rule AS 1991 only - Mar 3 2:00s 0 S
  78. Rule AS 1992 only - Mar 22 2:00s 0 S
  79. Rule AS 1993 only - Mar 7 2:00s 0 S
  80. Rule AS 1994 only - Mar 20 2:00s 0 S
  81. Rule AS 1995 2005 - Mar lastSun 2:00s 0 S
  82. Rule AS 2006 only - Apr 2 2:00s 0 S
  83. Rule AS 2007 only - Mar lastSun 2:00s 0 S
  84. Rule AS 2008 max - Apr Sun>=1 2:00s 0 S
  85. Rule AS 2008 max - Oct Sun>=1 2:00s 1:00 D
  86. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  87. Zone Australia/Adelaide 9:14:20 - LMT 1895 Feb
  88. 9:00 - ACST 1899 May
  89. 9:30 Aus AC%sT 1971
  90. 9:30 AS AC%sT
  91. # Tasmania
  92. #
  93. # From Paul Eggert (2005-08-16):
  94. # http://www.bom.gov.au/climate/averages/tables/dst_times.shtml
  95. # says King Island didn't observe DST from WWII until late 1971.
  96. #
  97. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  98. Rule AT 1967 only - Oct Sun>=1 2:00s 1:00 D
  99. Rule AT 1968 only - Mar lastSun 2:00s 0 S
  100. Rule AT 1968 1985 - Oct lastSun 2:00s 1:00 D
  101. Rule AT 1969 1971 - Mar Sun>=8 2:00s 0 S
  102. Rule AT 1972 only - Feb lastSun 2:00s 0 S
  103. Rule AT 1973 1981 - Mar Sun>=1 2:00s 0 S
  104. Rule AT 1982 1983 - Mar lastSun 2:00s 0 S
  105. Rule AT 1984 1986 - Mar Sun>=1 2:00s 0 S
  106. Rule AT 1986 only - Oct Sun>=15 2:00s 1:00 D
  107. Rule AT 1987 1990 - Mar Sun>=15 2:00s 0 S
  108. Rule AT 1987 only - Oct Sun>=22 2:00s 1:00 D
  109. Rule AT 1988 1990 - Oct lastSun 2:00s 1:00 D
  110. Rule AT 1991 1999 - Oct Sun>=1 2:00s 1:00 D
  111. Rule AT 1991 2005 - Mar lastSun 2:00s 0 S
  112. Rule AT 2000 only - Aug lastSun 2:00s 1:00 D
  113. Rule AT 2001 max - Oct Sun>=1 2:00s 1:00 D
  114. Rule AT 2006 only - Apr Sun>=1 2:00s 0 S
  115. Rule AT 2007 only - Mar lastSun 2:00s 0 S
  116. Rule AT 2008 max - Apr Sun>=1 2:00s 0 S
  117. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  118. Zone Australia/Hobart 9:49:16 - LMT 1895 Sep
  119. 10:00 - AEST 1916 Oct 1 2:00
  120. 10:00 1:00 AEDT 1917 Feb
  121. 10:00 Aus AE%sT 1967
  122. 10:00 AT AE%sT
  123. Zone Australia/Currie 9:35:28 - LMT 1895 Sep
  124. 10:00 - AEST 1916 Oct 1 2:00
  125. 10:00 1:00 AEDT 1917 Feb
  126. 10:00 Aus AE%sT 1971 Jul
  127. 10:00 AT AE%sT
  128. # Victoria
  129. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  130. Rule AV 1971 1985 - Oct lastSun 2:00s 1:00 D
  131. Rule AV 1972 only - Feb lastSun 2:00s 0 S
  132. Rule AV 1973 1985 - Mar Sun>=1 2:00s 0 S
  133. Rule AV 1986 1990 - Mar Sun>=15 2:00s 0 S
  134. Rule AV 1986 1987 - Oct Sun>=15 2:00s 1:00 D
  135. Rule AV 1988 1999 - Oct lastSun 2:00s 1:00 D
  136. Rule AV 1991 1994 - Mar Sun>=1 2:00s 0 S
  137. Rule AV 1995 2005 - Mar lastSun 2:00s 0 S
  138. Rule AV 2000 only - Aug lastSun 2:00s 1:00 D
  139. Rule AV 2001 2007 - Oct lastSun 2:00s 1:00 D
  140. Rule AV 2006 only - Apr Sun>=1 2:00s 0 S
  141. Rule AV 2007 only - Mar lastSun 2:00s 0 S
  142. Rule AV 2008 max - Apr Sun>=1 2:00s 0 S
  143. Rule AV 2008 max - Oct Sun>=1 2:00s 1:00 D
  144. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  145. Zone Australia/Melbourne 9:39:52 - LMT 1895 Feb
  146. 10:00 Aus AE%sT 1971
  147. 10:00 AV AE%sT
  148. # New South Wales
  149. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  150. Rule AN 1971 1985 - Oct lastSun 2:00s 1:00 D
  151. Rule AN 1972 only - Feb 27 2:00s 0 S
  152. Rule AN 1973 1981 - Mar Sun>=1 2:00s 0 S
  153. Rule AN 1982 only - Apr Sun>=1 2:00s 0 S
  154. Rule AN 1983 1985 - Mar Sun>=1 2:00s 0 S
  155. Rule AN 1986 1989 - Mar Sun>=15 2:00s 0 S
  156. Rule AN 1986 only - Oct 19 2:00s 1:00 D
  157. Rule AN 1987 1999 - Oct lastSun 2:00s 1:00 D
  158. Rule AN 1990 1995 - Mar Sun>=1 2:00s 0 S
  159. Rule AN 1996 2005 - Mar lastSun 2:00s 0 S
  160. Rule AN 2000 only - Aug lastSun 2:00s 1:00 D
  161. Rule AN 2001 2007 - Oct lastSun 2:00s 1:00 D
  162. Rule AN 2006 only - Apr Sun>=1 2:00s 0 S
  163. Rule AN 2007 only - Mar lastSun 2:00s 0 S
  164. Rule AN 2008 max - Apr Sun>=1 2:00s 0 S
  165. Rule AN 2008 max - Oct Sun>=1 2:00s 1:00 D
  166. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  167. Zone Australia/Sydney 10:04:52 - LMT 1895 Feb
  168. 10:00 Aus AE%sT 1971
  169. 10:00 AN AE%sT
  170. Zone Australia/Broken_Hill 9:25:48 - LMT 1895 Feb
  171. 10:00 - AEST 1896 Aug 23
  172. 9:00 - ACST 1899 May
  173. 9:30 Aus AC%sT 1971
  174. 9:30 AN AC%sT 2000
  175. 9:30 AS AC%sT
  176. # Lord Howe Island
  177. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  178. Rule LH 1981 1984 - Oct lastSun 2:00 1:00 D
  179. Rule LH 1982 1985 - Mar Sun>=1 2:00 0 S
  180. Rule LH 1985 only - Oct lastSun 2:00 0:30 D
  181. Rule LH 1986 1989 - Mar Sun>=15 2:00 0 S
  182. Rule LH 1986 only - Oct 19 2:00 0:30 D
  183. Rule LH 1987 1999 - Oct lastSun 2:00 0:30 D
  184. Rule LH 1990 1995 - Mar Sun>=1 2:00 0 S
  185. Rule LH 1996 2005 - Mar lastSun 2:00 0 S
  186. Rule LH 2000 only - Aug lastSun 2:00 0:30 D
  187. Rule LH 2001 2007 - Oct lastSun 2:00 0:30 D
  188. Rule LH 2006 only - Apr Sun>=1 2:00 0 S
  189. Rule LH 2007 only - Mar lastSun 2:00 0 S
  190. Rule LH 2008 max - Apr Sun>=1 2:00 0 S
  191. Rule LH 2008 max - Oct Sun>=1 2:00 0:30 D
  192. Zone Australia/Lord_Howe 10:36:20 - LMT 1895 Feb
  193. 10:00 - AEST 1981 Mar
  194. 10:30 LH LH%sT
  195. # Australian miscellany
  196. #
  197. # Ashmore Is, Cartier
  198. # no indigenous inhabitants; only seasonal caretakers
  199. # no times are set
  200. #
  201. # Coral Sea Is
  202. # no indigenous inhabitants; only meteorologists
  203. # no times are set
  204. #
  205. # Macquarie
  206. # Permanent occupation (scientific station) 1911-1915 and since 25 March 1948;
  207. # sealing and penguin oil station operated Nov 1899 to Apr 1919. See the
  208. # Tasmania Parks & Wildlife Service history of sealing at Macquarie Island
  209. # http://www.parks.tas.gov.au/index.aspx?base=1828
  210. # http://www.parks.tas.gov.au/index.aspx?base=1831
  211. # Guess that it was like Australia/Hobart while inhabited before 2010.
  212. #
  213. # From Steffen Thorsen (2010-03-10):
  214. # We got these changes from the Australian Antarctic Division:
  215. # - Macquarie Island will stay on UTC+11 for winter and therefore not
  216. # switch back from daylight savings time when other parts of Australia do
  217. # on 4 April.
  218. #
  219. # From Arthur David Olson (2013-05-23):
  220. # The 1919 transition is overspecified below so pre-2013 zics
  221. # will produce a binary file with an [A]EST-type as the first 32-bit type;
  222. # this is required for correct handling of times before 1916 by
  223. # pre-2013 versions of localtime.
  224. Zone Antarctica/Macquarie 0 - zzz 1899 Nov
  225. 10:00 - AEST 1916 Oct 1 2:00
  226. 10:00 1:00 AEDT 1917 Feb
  227. 10:00 Aus AE%sT 1919 Apr 1 0:00s
  228. 0 - zzz 1948 Mar 25
  229. 10:00 Aus AE%sT 1967
  230. 10:00 AT AE%sT 2010 Apr 4 3:00
  231. 11:00 - MIST # Macquarie I Standard Time
  232. # Christmas
  233. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  234. Zone Indian/Christmas 7:02:52 - LMT 1895 Feb
  235. 7:00 - CXT # Christmas Island Time
  236. # Cocos (Keeling) Is
  237. # These islands were ruled by the Ross family from about 1830 to 1978.
  238. # We don't know when standard time was introduced; for now, we guess 1900.
  239. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  240. Zone Indian/Cocos 6:27:40 - LMT 1900
  241. 6:30 - CCT # Cocos Islands Time
  242. # Fiji
  243. # Milne gives 11:55:44 for Suva.
  244. # From Alexander Krivenyshev (2009-11-10):
  245. # According to Fiji Broadcasting Corporation, Fiji plans to re-introduce DST
  246. # from November 29th 2009 to April 25th 2010.
  247. #
  248. # "Daylight savings to commence this month"
  249. # http://www.radiofiji.com.fj/fullstory.php?id=23719
  250. # http://www.worldtimezone.com/dst_news/dst_news_fiji01.html
  251. # From Steffen Thorsen (2009-11-10):
  252. # The Fiji Government has posted some more details about the approved
  253. # amendments:
  254. # http://www.fiji.gov.fj/publish/page_16198.shtml
  255. # From Steffen Thorsen (2010-03-03):
  256. # The Cabinet in Fiji has decided to end DST about a month early, on
  257. # 2010-03-28 at 03:00.
  258. # The plan is to observe DST again, from 2010-10-24 to sometime in March
  259. # 2011 (last Sunday a good guess?).
  260. #
  261. # Official source:
  262. # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=1096:3310-cabinet-approves-change-in-daylight-savings-dates&catid=49:cabinet-releases&Itemid=166
  263. #
  264. # A bit more background info here:
  265. # http://www.timeanddate.com/news/time/fiji-dst-ends-march-2010.html
  266. # From Alexander Krivenyshev (2010-10-24):
  267. # According to Radio Fiji and Fiji Times online, Fiji will end DST 3
  268. # weeks earlier than expected - on March 6, 2011, not March 27, 2011...
  269. # Here is confirmation from Government of the Republic of the Fiji Islands,
  270. # Ministry of Information (fiji.gov.fj) web site:
  271. # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=2608:daylight-savings&catid=71:press-releases&Itemid=155
  272. # http://www.worldtimezone.com/dst_news/dst_news_fiji04.html
  273. # From Steffen Thorsen (2011-10-03):
  274. # Now the dates have been confirmed, and at least our start date
  275. # assumption was correct (end date was one week wrong).
  276. #
  277. # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=4966:daylight-saving-starts-in-fiji&catid=71:press-releases&Itemid=155
  278. # which says
  279. # Members of the public are reminded to change their time to one hour in
  280. # advance at 2am to 3am on October 23, 2011 and one hour back at 3am to
  281. # 2am on February 26 next year.
  282. # From Ken Rylander (2011-10-24)
  283. # Another change to the Fiji DST end date. In the TZ database the end date for
  284. # Fiji DST 2012, is currently Feb 26. This has been changed to Jan 22.
  285. #
  286. # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=5017:amendments-to-daylight-savings&catid=71:press-releases&Itemid=155
  287. # states:
  288. #
  289. # The end of daylight saving scheduled initially for the 26th of February 2012
  290. # has been brought forward to the 22nd of January 2012.
  291. # The commencement of daylight saving will remain unchanged and start
  292. # on the 23rd of October, 2011.
  293. # From the Fiji Government Online Portal (2012-08-21) via Steffen Thorsen:
  294. # The Minister for Labour, Industrial Relations and Employment Mr Jone Usamate
  295. # today confirmed that Fiji will start daylight savings at 2 am on Sunday 21st
  296. # October 2012 and end at 3 am on Sunday 20th January 2013.
  297. # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=6702&catid=71&Itemid=155
  298. # From the Fijian Government Media Center (2013-08-30) via David Wheeler:
  299. # Fiji will start daylight savings on Sunday 27th October, 2013 ...
  300. # move clocks forward by one hour from 2am
  301. # http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVING-STARTS-ON-SUNDAY,-27th-OCTOBER-201.aspx
  302. # From Steffen Thorsen (2013-01-10):
  303. # Fiji will end DST on 2014-01-19 02:00:
  304. # http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVINGS-TO-END-THIS-MONTH-%281%29.aspx
  305. # From Ken Rylander (2014-10-20):
  306. # DST will start Nov. 2 this year.
  307. # http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVING-STARTS-ON-SUNDAY,-NOVEMBER-2ND.aspx
  308. # From a government order dated 2015-08-26 and published as Legal Notice No. 77
  309. # in the Government of Fiji Gazette Supplement No. 24 (2015-08-28),
  310. # via Ken Rylander (2015-09-02):
  311. # the daylight saving period is 1 hour in advance of the standard time
  312. # commencing at 2.00 am on Sunday 1st November, 2015 and ending at
  313. # 3.00 am on Sunday 17th January, 2016.
  314. # From Paul Eggert (2015-09-01):
  315. # For now, guess DST from 02:00 the first Sunday in November to
  316. # 03:00 the third Sunday in January. Although ad hoc, it matches
  317. # transitions since late 2014 and seems more likely to match future
  318. # practice than guessing no DST.
  319. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  320. Rule Fiji 1998 1999 - Nov Sun>=1 2:00 1:00 S
  321. Rule Fiji 1999 2000 - Feb lastSun 3:00 0 -
  322. Rule Fiji 2009 only - Nov 29 2:00 1:00 S
  323. Rule Fiji 2010 only - Mar lastSun 3:00 0 -
  324. Rule Fiji 2010 2013 - Oct Sun>=21 2:00 1:00 S
  325. Rule Fiji 2011 only - Mar Sun>=1 3:00 0 -
  326. Rule Fiji 2012 2013 - Jan Sun>=18 3:00 0 -
  327. Rule Fiji 2014 only - Jan Sun>=18 2:00 0 -
  328. Rule Fiji 2014 max - Nov Sun>=1 2:00 1:00 S
  329. Rule Fiji 2015 max - Jan Sun>=15 3:00 0 -
  330. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  331. Zone Pacific/Fiji 11:55:44 - LMT 1915 Oct 26 # Suva
  332. 12:00 Fiji FJ%sT # Fiji Time
  333. # French Polynesia
  334. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  335. Zone Pacific/Gambier -8:59:48 - LMT 1912 Oct # Rikitea
  336. -9:00 - GAMT # Gambier Time
  337. Zone Pacific/Marquesas -9:18:00 - LMT 1912 Oct
  338. -9:30 - MART # Marquesas Time
  339. Zone Pacific/Tahiti -9:58:16 - LMT 1912 Oct # Papeete
  340. -10:00 - TAHT # Tahiti Time
  341. # Clipperton (near North America) is administered from French Polynesia;
  342. # it is uninhabited.
  343. # Guam
  344. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  345. Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31
  346. 9:39:00 - LMT 1901 # Agana
  347. 10:00 - GST 2000 Dec 23 # Guam
  348. 10:00 - ChST # Chamorro Standard Time
  349. Link Pacific/Guam Pacific/Saipan # N Mariana Is
  350. # Kiribati
  351. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  352. Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki
  353. 12:00 - GILT # Gilbert Is Time
  354. Zone Pacific/Enderbury -11:24:20 - LMT 1901
  355. -12:00 - PHOT 1979 Oct # Phoenix Is Time
  356. -11:00 - PHOT 1995
  357. 13:00 - PHOT
  358. Zone Pacific/Kiritimati -10:29:20 - LMT 1901
  359. -10:40 - LINT 1979 Oct # Line Is Time
  360. -10:00 - LINT 1995
  361. 14:00 - LINT
  362. # N Mariana Is
  363. # See Pacific/Guam.
  364. # Marshall Is
  365. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  366. Zone Pacific/Majuro 11:24:48 - LMT 1901
  367. 11:00 - MHT 1969 Oct # Marshall Islands Time
  368. 12:00 - MHT
  369. Zone Pacific/Kwajalein 11:09:20 - LMT 1901
  370. 11:00 - MHT 1969 Oct
  371. -12:00 - KWAT 1993 Aug 20 # Kwajalein Time
  372. 12:00 - MHT
  373. # Micronesia
  374. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  375. Zone Pacific/Chuuk 10:07:08 - LMT 1901
  376. 10:00 - CHUT # Chuuk Time
  377. Zone Pacific/Pohnpei 10:32:52 - LMT 1901 # Kolonia
  378. 11:00 - PONT # Pohnpei Time
  379. Zone Pacific/Kosrae 10:51:56 - LMT 1901
  380. 11:00 - KOST 1969 Oct # Kosrae Time
  381. 12:00 - KOST 1999
  382. 11:00 - KOST
  383. # Nauru
  384. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  385. Zone Pacific/Nauru 11:07:40 - LMT 1921 Jan 15 # Uaobe
  386. 11:30 - NRT 1942 Mar 15 # Nauru Time
  387. 9:00 - JST 1944 Aug 15
  388. 11:30 - NRT 1979 May
  389. 12:00 - NRT
  390. # New Caledonia
  391. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  392. Rule NC 1977 1978 - Dec Sun>=1 0:00 1:00 S
  393. Rule NC 1978 1979 - Feb 27 0:00 0 -
  394. Rule NC 1996 only - Dec 1 2:00s 1:00 S
  395. # Shanks & Pottenger say the following was at 2:00; go with IATA.
  396. Rule NC 1997 only - Mar 2 2:00s 0 -
  397. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  398. Zone Pacific/Noumea 11:05:48 - LMT 1912 Jan 13 # Nouméa
  399. 11:00 NC NC%sT
  400. ###############################################################################
  401. # New Zealand
  402. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  403. Rule NZ 1927 only - Nov 6 2:00 1:00 S
  404. Rule NZ 1928 only - Mar 4 2:00 0 M
  405. Rule NZ 1928 1933 - Oct Sun>=8 2:00 0:30 S
  406. Rule NZ 1929 1933 - Mar Sun>=15 2:00 0 M
  407. Rule NZ 1934 1940 - Apr lastSun 2:00 0 M
  408. Rule NZ 1934 1940 - Sep lastSun 2:00 0:30 S
  409. Rule NZ 1946 only - Jan 1 0:00 0 S
  410. # Since 1957 Chatham has been 45 minutes ahead of NZ, but there's no
  411. # convenient single notation for the date and time of this transition
  412. # so we must duplicate the Rule lines.
  413. Rule NZ 1974 only - Nov Sun>=1 2:00s 1:00 D
  414. Rule Chatham 1974 only - Nov Sun>=1 2:45s 1:00 D
  415. Rule NZ 1975 only - Feb lastSun 2:00s 0 S
  416. Rule Chatham 1975 only - Feb lastSun 2:45s 0 S
  417. Rule NZ 1975 1988 - Oct lastSun 2:00s 1:00 D
  418. Rule Chatham 1975 1988 - Oct lastSun 2:45s 1:00 D
  419. Rule NZ 1976 1989 - Mar Sun>=1 2:00s 0 S
  420. Rule Chatham 1976 1989 - Mar Sun>=1 2:45s 0 S
  421. Rule NZ 1989 only - Oct Sun>=8 2:00s 1:00 D
  422. Rule Chatham 1989 only - Oct Sun>=8 2:45s 1:00 D
  423. Rule NZ 1990 2006 - Oct Sun>=1 2:00s 1:00 D
  424. Rule Chatham 1990 2006 - Oct Sun>=1 2:45s 1:00 D
  425. Rule NZ 1990 2007 - Mar Sun>=15 2:00s 0 S
  426. Rule Chatham 1990 2007 - Mar Sun>=15 2:45s 0 S
  427. Rule NZ 2007 max - Sep lastSun 2:00s 1:00 D
  428. Rule Chatham 2007 max - Sep lastSun 2:45s 1:00 D
  429. Rule NZ 2008 max - Apr Sun>=1 2:00s 0 S
  430. Rule Chatham 2008 max - Apr Sun>=1 2:45s 0 S
  431. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  432. Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2
  433. 11:30 NZ NZ%sT 1946 Jan 1
  434. 12:00 NZ NZ%sT
  435. Zone Pacific/Chatham 12:13:48 - LMT 1868 Nov 2
  436. 12:15 - CHAST 1946 Jan 1
  437. 12:45 Chatham CHA%sT
  438. Link Pacific/Auckland Antarctica/McMurdo
  439. # Auckland Is
  440. # uninhabited; Māori and Moriori, colonial settlers, pastoralists, sealers,
  441. # and scientific personnel have wintered
  442. # Campbell I
  443. # minor whaling stations operated 1909/1914
  444. # scientific station operated 1941/1995;
  445. # previously whalers, sealers, pastoralists, and scientific personnel wintered
  446. # was probably like Pacific/Auckland
  447. # Cook Is
  448. # From Shanks & Pottenger:
  449. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  450. Rule Cook 1978 only - Nov 12 0:00 0:30 HS
  451. Rule Cook 1979 1991 - Mar Sun>=1 0:00 0 -
  452. Rule Cook 1979 1990 - Oct lastSun 0:00 0:30 HS
  453. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  454. Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua
  455. -10:30 - CKT 1978 Nov 12 # Cook Is Time
  456. -10:00 Cook CK%sT
  457. ###############################################################################
  458. # Niue
  459. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  460. Zone Pacific/Niue -11:19:40 - LMT 1901 # Alofi
  461. -11:20 - NUT 1951 # Niue Time
  462. -11:30 - NUT 1978 Oct 1
  463. -11:00 - NUT
  464. # Norfolk
  465. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  466. Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston
  467. 11:12 - NMT 1951 # Norfolk Mean Time
  468. 11:30 - NFT 1974 Oct 27 02:00 # Norfolk T.
  469. 11:30 1:00 NFST 1975 Mar 2 02:00
  470. 11:30 - NFT 2015 Oct 4 02:00
  471. 11:00 - NFT
  472. # Palau (Belau)
  473. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  474. Zone Pacific/Palau 8:57:56 - LMT 1901 # Koror
  475. 9:00 - PWT # Palau Time
  476. # Papua New Guinea
  477. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  478. Zone Pacific/Port_Moresby 9:48:40 - LMT 1880
  479. 9:48:32 - PMMT 1895 # Port Moresby Mean Time
  480. 10:00 - PGT # Papua New Guinea Time
  481. #
  482. # From Paul Eggert (2014-10-13):
  483. # Base the Bougainville entry on the Arawa-Kieta region, which appears to have
  484. # the most people even though it was devastated in the Bougainville Civil War.
  485. #
  486. # Although Shanks gives 1942-03-15 / 1943-11-01 for JST, these dates
  487. # are apparently rough guesswork from the starts of military campaigns.
  488. # The World War II entries below are instead based on Arawa-Kieta.
  489. # The Japanese occupied Kieta in July 1942,
  490. # according to the Pacific War Online Encyclopedia
  491. # http://pwencycl.kgbudge.com/B/o/Bougainville.htm
  492. # and seem to have controlled it until their 1945-08-21 surrender.
  493. #
  494. # The Autonomous Region of Bougainville plans to switch from UTC+10 to UTC+11
  495. # on 2014-12-28 at 02:00. They call UTC+11 "Bougainville Standard Time";
  496. # abbreviate this as BST. See:
  497. # http://www.bougainville24.com/bougainville-issues/bougainville-gets-own-timezone/
  498. #
  499. Zone Pacific/Bougainville 10:22:16 - LMT 1880
  500. 9:48:32 - PMMT 1895
  501. 10:00 - PGT 1942 Jul
  502. 9:00 - JST 1945 Aug 21
  503. 10:00 - PGT 2014 Dec 28 2:00
  504. 11:00 - BST
  505. # Pitcairn
  506. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  507. Zone Pacific/Pitcairn -8:40:20 - LMT 1901 # Adamstown
  508. -8:30 - PNT 1998 Apr 27 0:00
  509. -8:00 - PST # Pitcairn Standard Time
  510. # American Samoa
  511. Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5
  512. -11:22:48 - LMT 1911
  513. -11:00 - NST 1967 Apr # N=Nome
  514. -11:00 - BST 1983 Nov 30 # B=Bering
  515. -11:00 - SST # S=Samoa
  516. Link Pacific/Pago_Pago Pacific/Midway # in US minor outlying islands
  517. # Samoa (formerly and also known as Western Samoa)
  518. # From Steffen Thorsen (2009-10-16):
  519. # We have been in contact with the government of Samoa again, and received
  520. # the following info:
  521. #
  522. # "Cabinet has now approved Daylight Saving to be effected next year
  523. # commencing from the last Sunday of September 2010 and conclude first
  524. # Sunday of April 2011."
  525. #
  526. # Background info:
  527. # http://www.timeanddate.com/news/time/samoa-dst-plan-2009.html
  528. #
  529. # Samoa's Daylight Saving Time Act 2009 is available here, but does not
  530. # contain any dates:
  531. # http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%202009%20%28English%29%20-%20Final%207-7-091.pdf
  532. # From Laupue Raymond Hughes (2010-10-07):
  533. # Please see
  534. # http://www.mcil.gov.ws
  535. # the Ministry of Commerce, Industry and Labour (sideframe) "Last Sunday
  536. # September 2010 (26/09/10) - adjust clocks forward from 12:00 midnight
  537. # to 01:00am and First Sunday April 2011 (03/04/11) - adjust clocks
  538. # backwards from 1:00am to 12:00am"
  539. # From Laupue Raymond Hughes (2011-03-07):
  540. # [http://www.mcil.gov.ws/ftcd/daylight_saving_2011.pdf]
  541. #
  542. # ... when the standard time strikes the hour of four o'clock (4.00am
  543. # or 0400 Hours) on the 2nd April 2011, then all instruments used to
  544. # measure standard time are to be adjusted/changed to three o'clock
  545. # (3:00am or 0300Hrs).
  546. # From David Zülke (2011-05-09):
  547. # Subject: Samoa to move timezone from east to west of international date line
  548. #
  549. # http://www.morningstar.co.uk/uk/markets/newsfeeditem.aspx?id=138501958347963
  550. # From Paul Eggert (2014-06-27):
  551. # The International Date Line Act 2011
  552. # http://www.parliament.gov.ws/images/ACTS/International_Date_Line_Act__2011_-_Eng.pdf
  553. # changed Samoa from UTC-11 to UTC+13, effective "12 o'clock midnight, on
  554. # Thursday 29th December 2011". The International Date Line was adjusted
  555. # accordingly.
  556. # From Laupue Raymond Hughes (2011-09-02):
  557. # http://www.mcil.gov.ws/mcil_publications.html
  558. #
  559. # here is the official website publication for Samoa DST and dateline change
  560. #
  561. # DST
  562. # Year End Time Start Time
  563. # 2011 - - - - - - 24 September 3:00am to 4:00am
  564. # 2012 01 April 4:00am to 3:00am - - - - - -
  565. #
  566. # Dateline Change skip Friday 30th Dec 2011
  567. # Thursday 29th December 2011 23:59:59 Hours
  568. # Saturday 31st December 2011 00:00:00 Hours
  569. #
  570. # From Nicholas Pereira (2012-09-10):
  571. # Daylight Saving Time commences on Sunday 30th September 2012 and
  572. # ends on Sunday 7th of April 2013....
  573. # http://www.mcil.gov.ws/mcil_publications.html
  574. #
  575. # From Paul Eggert (2014-07-08):
  576. # That web page currently lists transitions for 2012/3 and 2013/4.
  577. # Assume the pattern instituted in 2012 will continue indefinitely.
  578. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  579. Rule WS 2010 only - Sep lastSun 0:00 1 D
  580. Rule WS 2011 only - Apr Sat>=1 4:00 0 S
  581. Rule WS 2011 only - Sep lastSat 3:00 1 D
  582. Rule WS 2012 max - Apr Sun>=1 4:00 0 S
  583. Rule WS 2012 max - Sep lastSun 3:00 1 D
  584. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  585. Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5
  586. -11:26:56 - LMT 1911
  587. -11:30 - WSST 1950
  588. -11:00 WS S%sT 2011 Dec 29 24:00 # S=Samoa
  589. 13:00 WS WS%sT
  590. # Solomon Is
  591. # excludes Bougainville, for which see Papua New Guinea
  592. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  593. Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara
  594. 11:00 - SBT # Solomon Is Time
  595. # Tokelau Is
  596. #
  597. # From Gwillim Law (2011-12-29)
  598. # A correspondent informed me that Tokelau, like Samoa, will be skipping
  599. # December 31 this year ...
  600. #
  601. # From Steffen Thorsen (2012-07-25)
  602. # ... we double checked by calling hotels and offices based in Tokelau asking
  603. # about the time there, and they all told a time that agrees with UTC+13....
  604. # Shanks says UTC-10 from 1901 [but] ... there is a good chance the change
  605. # actually was to UTC-11 back then.
  606. #
  607. # From Paul Eggert (2012-07-25)
  608. # A Google Books snippet of Appendix to the Journals of the House of
  609. # Representatives of New Zealand, Session 1948,
  610. # <http://books.google.com/books?id=ZaVCAQAAIAAJ>, page 65, says Tokelau
  611. # was "11 hours slow on G.M.T." Go with Thorsen and assume Shanks & Pottenger
  612. # are off by an hour starting in 1901.
  613. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  614. Zone Pacific/Fakaofo -11:24:56 - LMT 1901
  615. -11:00 - TKT 2011 Dec 30 # Tokelau Time
  616. 13:00 - TKT
  617. # Tonga
  618. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  619. Rule Tonga 1999 only - Oct 7 2:00s 1:00 S
  620. Rule Tonga 2000 only - Mar 19 2:00s 0 -
  621. Rule Tonga 2000 2001 - Nov Sun>=1 2:00 1:00 S
  622. Rule Tonga 2001 2002 - Jan lastSun 2:00 0 -
  623. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  624. Zone Pacific/Tongatapu 12:19:20 - LMT 1901
  625. 12:20 - TOT 1941 # Tonga Time
  626. 13:00 - TOT 1999
  627. 13:00 Tonga TO%sT
  628. # Tuvalu
  629. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  630. Zone Pacific/Funafuti 11:56:52 - LMT 1901
  631. 12:00 - TVT # Tuvalu Time
  632. # US minor outlying islands
  633. # Howland, Baker
  634. # Howland was mined for guano by American companies 1857-1878 and British
  635. # 1886-1891; Baker was similar but exact dates are not known.
  636. # Inhabited by civilians 1935-1942; U.S. military bases 1943-1944;
  637. # uninhabited thereafter.
  638. # Howland observed Hawaii Standard Time (UT-10:30) in 1937;
  639. # see page 206 of Elgen M. Long and Marie K. Long,
  640. # Amelia Earhart: the Mystery Solved, Simon & Schuster (2000).
  641. # So most likely Howland and Baker observed Hawaii Time from 1935
  642. # until they were abandoned after the war.
  643. # Jarvis
  644. # Mined for guano by American companies 1857-1879 and British 1883?-1891?.
  645. # Inhabited by civilians 1935-1942; IGY scientific base 1957-1958;
  646. # uninhabited thereafter.
  647. # no information; was probably like Pacific/Kiritimati
  648. # Johnston
  649. #
  650. # From Paul Eggert (2014-03-11):
  651. # Sometimes Johnston kept Hawaii time, and sometimes it was an hour behind.
  652. # Details are uncertain. We have no data for Johnston after 1970, so
  653. # treat it like Hawaii for now.
  654. #
  655. # In his memoirs of June 6th to October 4, 1945
  656. # <http://www.315bw.org/Herb_Bach.htm> (2005), Herbert C. Bach writes,
  657. # "We started our letdown to Kwajalein Atoll and landed there at 5:00 AM
  658. # Johnston time, 1:30 AM Kwajalein time." This was in June 1945, and
  659. # confirms that Johnston kept the same time as Honolulu in summer 1945.
  660. #
  661. # From Lyle McElhaney (2014-03-11):
  662. # [W]hen JI was being used for that [atomic bomb] testing, the time being used
  663. # was not Hawaiian time but rather the same time being used on the ships,
  664. # which had a GMT offset of -11 hours. This apparently applied to at least the
  665. # time from Operation Newsreel (Hardtack I/Teak shot, 1958-08-01) to the last
  666. # Operation Fishbowl shot (Tightrope, 1962-11-04).... [See] Herman Hoerlin,
  667. # "The United States High-Altitude Test Experience: A Review Emphasizing the
  668. # Impact on the Environment", Los Alamos LA-6405, Oct 1976.
  669. # http://www.fas.org/sgp/othergov/doe/lanl/docs1/00322994.pdf
  670. # See the table on page 4 where he lists GMT and local times for the tests; a
  671. # footnote for the JI tests reads that local time is "JI time = Hawaii Time
  672. # Minus One Hour".
  673. #
  674. # See 'northamerica' for Pacific/Johnston.
  675. # Kingman
  676. # uninhabited
  677. # Midway
  678. # See Pacific/Pago_Pago.
  679. # Palmyra
  680. # uninhabited since World War II; was probably like Pacific/Kiritimati
  681. # Wake
  682. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  683. Zone Pacific/Wake 11:06:28 - LMT 1901
  684. 12:00 - WAKT # Wake Time
  685. # Vanuatu
  686. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
  687. Rule Vanuatu 1983 only - Sep 25 0:00 1:00 S
  688. Rule Vanuatu 1984 1991 - Mar Sun>=23 0:00 0 -
  689. Rule Vanuatu 1984 only - Oct 23 0:00 1:00 S
  690. Rule Vanuatu 1985 1991 - Sep Sun>=23 0:00 1:00 S
  691. Rule Vanuatu 1992 1993 - Jan Sun>=23 0:00 0 -
  692. Rule Vanuatu 1992 only - Oct Sun>=23 0:00 1:00 S
  693. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  694. Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
  695. 11:00 Vanuatu VU%sT # Vanuatu Time
  696. # Wallis and Futuna
  697. # Zone NAME GMTOFF RULES FORMAT [UNTIL]
  698. Zone Pacific/Wallis 12:15:20 - LMT 1901
  699. 12:00 - WFT # Wallis & Futuna Time
  700. ###############################################################################
  701. # NOTES
  702. # This file is by no means authoritative; if you think you know better,
  703. # go ahead and edit the file (and please send any changes to
  704. # tz@iana.org for general use in the future). For more, please see
  705. # the file CONTRIBUTING in the tz distribution.
  706. # From Paul Eggert (2014-10-31):
  707. #
  708. # Unless otherwise specified, the source for data through 1990 is:
  709. # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
  710. # San Diego: ACS Publications, Inc. (2003).
  711. # Unfortunately this book contains many errors and cites no sources.
  712. #
  713. # Gwillim Law writes that a good source
  714. # for recent time zone data is the International Air Transport
  715. # Association's Standard Schedules Information Manual (IATA SSIM),
  716. # published semiannually. Law sent in several helpful summaries
  717. # of the IATA's data after 1990. Except where otherwise noted,
  718. # IATA SSIM is the source for entries after 1990.
  719. #
  720. # Another source occasionally used is Edward W. Whitman, World Time Differences,
  721. # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
  722. # I found in the UCLA library.
  723. #
  724. # For data circa 1899, a common source is:
  725. # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
  726. # http://www.jstor.org/stable/1774359
  727. #
  728. # A reliable and entertaining source about time zones is
  729. # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
  730. #
  731. # I invented the abbreviations marked '*' in the following table;
  732. # the rest are from earlier versions of this file, or from other sources.
  733. # Corrections are welcome!
  734. # std dst
  735. # LMT Local Mean Time
  736. # 8:00 AWST AWDT Western Australia
  737. # 8:45 ACWST ACWDT Central Western Australia*
  738. # 9:00 JST Japan
  739. # 9:30 ACST ACDT Central Australia
  740. # 10:00 AEST AEDT Eastern Australia
  741. # 10:00 ChST Chamorro
  742. # 10:30 LHST LHDT Lord Howe*
  743. # 11:00 BST Bougainville*
  744. # 11:30 NZMT NZST New Zealand through 1945
  745. # 12:00 NZST NZDT New Zealand 1946-present
  746. # 12:15 CHAST Chatham through 1945*
  747. # 12:45 CHAST CHADT Chatham 1946-present*
  748. # 13:00 WSST WSDT (western) Samoa 2011-present*
  749. # -11:30 WSST Western Samoa through 1950*
  750. # -11:00 SST Samoa
  751. # -10:00 HST Hawaii
  752. # - 8:00 PST Pitcairn*
  753. #
  754. # See the 'northamerica' file for Hawaii.
  755. # See the 'southamerica' file for Easter I and the Galápagos Is.
  756. ###############################################################################
  757. # Australia
  758. # From Paul Eggert (2014-06-30):
  759. # Daylight saving time has long been controversial in Australia, pitting
  760. # region against region, rural against urban, and local against global.
  761. # For example, in her review of Graeme Davison's _The Unforgiving
  762. # Minute: how Australians learned to tell the time_ (1993), Perth native
  763. # Phillipa J Martyr wrote, "The section entitled 'Saving Daylight' was
  764. # very informative, but was (as can, sadly, only be expected from a
  765. # Melbourne-based study) replete with the usual chuckleheaded
  766. # Queenslanders and straw-chewing yokels from the West prattling fables
  767. # about fading curtains and crazed farm animals."
  768. # Electronic Journal of Australian and New Zealand History (1997-03-03)
  769. # http://www.jcu.edu.au/aff/history/reviews/davison.htm
  770. # From Paul Eggert (2005-12-08):
  771. # Implementation Dates of Daylight Saving Time within Australia
  772. # http://www.bom.gov.au/climate/averages/tables/dst_times.shtml
  773. # summarizes daylight saving issues in Australia.
  774. # From Arthur David Olson (2005-12-12):
  775. # Lawlink NSW:Daylight Saving in New South Wales
  776. # http://www.lawlink.nsw.gov.au/lawlink/Corporate/ll_agdinfo.nsf/pages/community_relations_daylight_saving
  777. # covers New South Wales in particular.
  778. # From John Mackin (1991-03-06):
  779. # We in Australia have _never_ referred to DST as 'daylight' time.
  780. # It is called 'summer' time. Now by a happy coincidence, 'summer'
  781. # and 'standard' happen to start with the same letter; hence, the
  782. # abbreviation does _not_ change...
  783. # The legislation does not actually define abbreviations, at least
  784. # in this State, but the abbreviation is just commonly taken to be the
  785. # initials of the phrase, and the legislation here uniformly uses
  786. # the phrase 'summer time' and does not use the phrase 'daylight
  787. # time'.
  788. # Announcers on the Commonwealth radio network, the ABC (for Australian
  789. # Broadcasting Commission), use the phrases 'Eastern Standard Time'
  790. # or 'Eastern Summer Time'. (Note, though, that as I say in the
  791. # current australasia file, there is really no such thing.) Announcers
  792. # on its overseas service, Radio Australia, use the same phrases
  793. # prefixed by the word 'Australian' when referring to local times;
  794. # time announcements on that service, naturally enough, are made in UTC.
  795. # From Paul Eggert (2014-06-30):
  796. #
  797. # Inspired by Mackin's remarks quoted above, earlier versions of this
  798. # file used "EST" for both Eastern Standard Time and Eastern Summer
  799. # Time in Australia, and similarly for "CST", "CWST", and "WST".
  800. # However, these abbreviations were confusing and were not common
  801. # practice among Australians, and there were justifiable complaints
  802. # about them, so I attempted to survey current Australian usage.
  803. # For the tz database, the full English phrase is not that important;
  804. # what matters is the abbreviation. It's difficult to survey the web
  805. # directly for abbreviation usage, as there are so many false hits for
  806. # strings like "EST" and "EDT", so I looked for pages that defined an
  807. # abbreviation for eastern or central DST in Australia, and got the
  808. # following numbers of unique hits for the listed Google queries:
  809. #
  810. # 10 "Eastern Daylight Time AEST" site:au [some are false hits]
  811. # 10 "Eastern Summer Time AEST" site:au
  812. # 10 "Summer Time AEDT" site:au
  813. # 13 "EDST Eastern Daylight Saving Time" site:au
  814. # 18 "Summer Time ESST" site:au
  815. # 28 "Eastern Daylight Saving Time EDST" site:au
  816. # 39 "EDT Eastern Daylight Time" site:au [some are false hits]
  817. # 53 "Eastern Daylight Time EDT" site:au [some are false hits]
  818. # 54 "AEDT Australian Eastern Daylight Time" site:au
  819. # 182 "Eastern Daylight Time AEDT" site:au
  820. #
  821. # 17 "Central Daylight Time CDT" site:au [some are false hits]
  822. # 46 "Central Daylight Time ACDT" site:au
  823. #
  824. # I tried several other variants (e.g., "Eastern Summer Time EST") but
  825. # they all returned fewer than 10 unique hits. I also looked for pages
  826. # mentioning both "western standard time" and an abbreviation, since
  827. # there is no WST in the US to generate false hits, and found:
  828. #
  829. # 156 "western standard time" AWST site:au
  830. # 226 "western standard time" WST site:au
  831. #
  832. # I then surveyed the top ten newspapers in Australia by circulation as
  833. # listed in Wikipedia, using Google queries like "AEDT site:heraldsun.com.au"
  834. # and obtaining estimated counts from the initial page of search results.
  835. # All ten papers greatly preferred "AEDT" to "EDT". The papers
  836. # surveyed were the Herald Sun, The Daily Telegraph, The Courier-Mail,
  837. # The Sydney Morning Herald, The West Australian, The Age, The Advertiser,
  838. # The Australian, The Financial Review, and The Herald (Newcastle).
  839. #
  840. # I also searched for historical usage, to see whether abbreviations
  841. # like "AEDT" are new. A Trove search <http://trove.nla.gov.au/>
  842. # found only one newspaper (The Canberra Times) with a house style
  843. # dating back to the 1970s, I expect because other newspapers weren't
  844. # fully indexed. The Canberra Times strongly preferred abbreviations
  845. # like "AEDT". The first occurrence of "AEDT" was a World Weather
  846. # column (1971-11-17, page 24), and of "ACDT" was a Scoreboard column
  847. # (1993-01-24, p 16). The style was the typical usage but was not
  848. # strictly enforced; for example, "Welcome to the twilight zones ..."
  849. # (1994-10-29, p 1) uses the abbreviations AEST/AEDT, CST/CDT, and
  850. # WST, and goes on to say, "The confusion and frustration some feel
  851. # about the lack of uniformity among Australia's six states and two
  852. # territories has prompted one group to form its very own political
  853. # party -- the Sydney-based Daylight Saving Extension Party."
  854. #
  855. # I also surveyed federal government sources. They did not agree:
  856. #
  857. # The Australian Government (2014-03-26)
  858. # http://australia.gov.au/about-australia/our-country/time
  859. # (This document was produced by the Department of Finance.)
  860. # AEST ACST AWST AEDT ACDT
  861. #
  862. # Bureau of Meteorology (2012-11-08)
  863. # http://www.bom.gov.au/climate/averages/tables/daysavtm.shtml
  864. # EST CST WST EDT CDT
  865. #
  866. # Civil Aviation Safety Authority (undated)
  867. # http://services.casa.gov.au/outnback/inc/pages/episode3/episode-3_time_zones.shtml
  868. # EST CST WST (no abbreviations given for DST)
  869. #
  870. # Geoscience Australia (2011-11-24)
  871. # http://www.ga.gov.au/geodesy/astro/sunrise.jsp
  872. # AEST ACST AWST AEDT ACDT
  873. #
  874. # Parliamentary Library (2008-11-10)
  875. # http://www.aph.gov.au/binaries/library/pubs/rp/2008-09/09rp14.pdf
  876. # EST CST WST preferred for standard time; AEST AEDT ACST ACDT also used
  877. #
  878. # The Transport Safety Bureau has an extensive series of accident reports,
  879. # and investigators seem to use whatever abbreviation they like.
  880. # Googling site:atsb.gov.au found the following number of unique hits:
  881. # 311 "ESuT", 195 "EDT", 26 "AEDT", 83 "CSuT", 46 "CDT".
  882. # "_SuT" tended to appear in older reports, and "A_DT" tended to
  883. # appear in reports of events with international implications.
  884. #
  885. # From the above it appears that there is a working consensus in
  886. # Australia to use trailing "DT" for daylight saving time; although
  887. # some sources use trailing "SST" or "ST" or "SuT" they are by far in
  888. # the minority. The case for leading "A" is weaker, but since it
  889. # seems to be preferred in the overall web and is preferred in all
  890. # the leading newspaper websites and in many government departments,
  891. # it has a stronger case than omitting the leading "A". The current
  892. # version of the database therefore uses abbreviations like "AEST" and
  893. # "AEDT" for Australian time zones.
  894. # From Paul Eggert (1995-12-19):
  895. # Shanks & Pottenger report 2:00 for all autumn changes in Australia and NZ.
  896. # Mark Prior writes that his newspaper
  897. # reports that NSW's fall 1995 change will occur at 2:00,
  898. # but Robert Elz says it's been 3:00 in Victoria since 1970
  899. # and perhaps the newspaper's '2:00' is referring to standard time.
  900. # For now we'll continue to assume 2:00s for changes since 1960.
  901. # From Eric Ulevik (1998-01-05):
  902. #
  903. # Here are some URLs to Australian time legislation. These URLs are stable,
  904. # and should probably be included in the data file. There are probably more
  905. # relevant entries in this database.
  906. #
  907. # NSW (including LHI and Broken Hill):
  908. # Standard Time Act 1987 (updated 1995-04-04)
  909. # http://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html
  910. # ACT
  911. # Standard Time and Summer Time Act 1972
  912. # http://www.austlii.edu.au/au/legis/act/consol_act/stasta1972279/index.html
  913. # SA
  914. # Standard Time Act, 1898
  915. # http://www.austlii.edu.au/au/legis/sa/consol_act/sta1898137/index.html
  916. # From David Grosz (2005-06-13):
  917. # It was announced last week that Daylight Saving would be extended by
  918. # one week next year to allow for the 2006 Commonwealth Games.
  919. # Daylight Saving is now to end for next year only on the first Sunday
  920. # in April instead of the last Sunday in March.
  921. #
  922. # From Gwillim Law (2005-06-14):
  923. # I did some Googling and found that all of those states (and territory) plan
  924. # to extend DST together in 2006.
  925. # ACT: http://www.cmd.act.gov.au/mediareleases/fileread.cfm?file=86.txt
  926. # New South Wales: http://www.thecouriermail.news.com.au/common/story_page/0,5936,15538869%255E1702,00.html
  927. # South Australia: http://www.news.com.au/story/0,10117,15555031-1246,00.html
  928. # Tasmania: http://www.media.tas.gov.au/release.php?id=14772
  929. # Victoria: I wasn't able to find anything separate, but the other articles
  930. # allude to it.
  931. # But not Queensland
  932. # http://www.news.com.au/story/0,10117,15564030-1248,00.html
  933. # Northern Territory
  934. # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
  935. # # The NORTHERN TERRITORY.. [ Courtesy N.T. Dept of the Chief Minister ]
  936. # # [ Nov 1990 ]
  937. # # N.T. have never utilised any DST due to sub-tropical/tropical location.
  938. # ...
  939. # Zone Australia/North 9:30 - CST
  940. # From Bradley White (1991-03-04):
  941. # A recent excerpt from an Australian newspaper...
  942. # the Northern Territory do[es] not have daylight saving.
  943. # Western Australia
  944. # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
  945. # # The state of WESTERN AUSTRALIA.. [ Courtesy W.A. dept Premier+Cabinet ]
  946. # # [ Nov 1990 ]
  947. # # W.A. suffers from a great deal of public and political opposition to
  948. # # DST in principle. A bill is brought before parliament in most years, but
  949. # # usually defeated either in the upper house, or in party caucus
  950. # # before reaching parliament.
  951. # ...
  952. # Zone Australia/West 8:00 AW %sST
  953. # ...
  954. # Rule AW 1974 only - Oct lastSun 2:00 1:00 D
  955. # Rule AW 1975 only - Mar Sun>=1 3:00 0 W
  956. # Rule AW 1983 only - Oct lastSun 2:00 1:00 D
  957. # Rule AW 1984 only - Mar Sun>=1 3:00 0 W
  958. # From Bradley White (1991-03-04):
  959. # A recent excerpt from an Australian newspaper...
  960. # Western Australia...do[es] not have daylight saving.
  961. # From John D. Newman via Bradley White (1991-11-02):
  962. # Western Australia is still on "winter time". Some DH in Sydney
  963. # rang me at home a few days ago at 6.00am. (He had just arrived at
  964. # work at 9.00am.)
  965. # W.A. is switching to Summer Time on Nov 17th just to confuse
  966. # everybody again.
  967. # From Arthur David Olson (1992-03-08):
  968. # The 1992 ending date used in the rules is a best guess;
  969. # it matches what was used in the past.
  970. # The Australian Bureau of Meteorology FAQ
  971. # http://www.bom.gov.au/faq/faqgen.htm
  972. # (1999-09-27) writes that Giles Meteorological Station uses
  973. # South Australian time even though it's located in Western Australia.
  974. # Queensland
  975. # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
  976. # # The state of QUEENSLAND.. [ Courtesy Qld. Dept Premier Econ&Trade Devel ]
  977. # # [ Dec 1990 ]
  978. # ...
  979. # Zone Australia/Queensland 10:00 AQ %sST
  980. # ...
  981. # Rule AQ 1971 only - Oct lastSun 2:00 1:00 D
  982. # Rule AQ 1972 only - Feb lastSun 3:00 0 E
  983. # Rule AQ 1989 max - Oct lastSun 2:00 1:00 D
  984. # Rule AQ 1990 max - Mar Sun>=1 3:00 0 E
  985. # From Bradley White (1989-12-24):
  986. # "Australia/Queensland" now observes daylight time (i.e. from
  987. # October 1989).
  988. # From Bradley White (1991-03-04):
  989. # A recent excerpt from an Australian newspaper...
  990. # ...Queensland...[has] agreed to end daylight saving
  991. # at 3am tomorrow (March 3)...
  992. # From John Mackin (1991-03-06):
  993. # I can certainly confirm for my part that Daylight Saving in NSW did in fact
  994. # end on Sunday, 3 March. I don't know at what hour, though. (It surprised
  995. # me.)
  996. # From Bradley White (1992-03-08):
  997. # ...there was recently a referendum in Queensland which resulted
  998. # in the experimental daylight saving system being abandoned. So, ...
  999. # ...
  1000. # Rule QLD 1989 1991 - Oct lastSun 2:00 1:00 D
  1001. # Rule QLD 1990 1992 - Mar Sun>=1 3:00 0 S
  1002. # ...
  1003. # From Arthur David Olson (1992-03-08):
  1004. # The chosen rules the union of the 1971/1972 change and the 1989-1992 changes.
  1005. # From Christopher Hunt (2006-11-21), after an advance warning
  1006. # from Jesper Nørgaard Welen (2006-11-01):
  1007. # WA are trialing DST for three years.
  1008. # http://www.parliament.wa.gov.au/parliament/bills.nsf/9A1B183144403DA54825721200088DF1/$File/Bill175-1B.pdf
  1009. # From Rives McDow (2002-04-09):
  1010. # The most interesting region I have found consists of three towns on the
  1011. # southern coast.... South Australia observes daylight saving time; Western
  1012. # Australia does not. The two states are one and a half hours apart. The
  1013. # residents decided to forget about this nonsense of changing the clock so
  1014. # much and set the local time 20 hours and 45 minutes from the
  1015. # international date line, or right in the middle of the time of South
  1016. # Australia and Western Australia....
  1017. #
  1018. # From Paul Eggert (2002-04-09):
  1019. # This is confirmed by the section entitled
  1020. # "What's the deal with time zones???" in
  1021. # http://www.earthsci.unimelb.edu.au/~awatkins/null.html
  1022. #
  1023. # From Alex Livingston (2006-12-07):
  1024. # ... it was just on four years ago that I drove along the Eyre Highway,
  1025. # which passes through eastern Western Australia close to the southern
  1026. # coast of the continent.
  1027. #
  1028. # I paid particular attention to the time kept there. There can be no
  1029. # dispute that UTC+08:45 was considered "the time" from the border
  1030. # village just inside the border with South Australia to as far west
  1031. # as just east of Caiguna. There can also be no dispute that Eucla is
  1032. # the largest population centre in this zone....
  1033. #
  1034. # Now that Western Australia is observing daylight saving, the
  1035. # question arose whether this part of the state would follow suit. I
  1036. # just called the border village and confirmed that indeed they have,
  1037. # meaning that they are now observing UTC+09:45.
  1038. #
  1039. # (2006-12-09):
  1040. # I personally doubt that either experimentation with daylight saving
  1041. # in WA or its introduction in SA had anything to do with the genesis
  1042. # of this time zone. My hunch is that it's been around since well
  1043. # before 1975. I remember seeing it noted on road maps decades ago.
  1044. # From Paul Eggert (2006-12-15):
  1045. # For lack of better info, assume the tradition dates back to the
  1046. # introduction of standard time in 1895.
  1047. # southeast Australia
  1048. #
  1049. # From Paul Eggert (2007-07-23):
  1050. # Starting autumn 2008 Victoria, NSW, South Australia, Tasmania and the ACT
  1051. # end DST the first Sunday in April and start DST the first Sunday in October.
  1052. # http://www.theage.com.au/news/national/daylight-savings-to-span-six-months/2007/06/27/1182623966703.html
  1053. # South Australia
  1054. # From Bradley White (1991-03-04):
  1055. # A recent excerpt from an Australian newspaper...
  1056. # ...South Australia...[has] agreed to end daylight saving
  1057. # at 3am tomorrow (March 3)...
  1058. # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
  1059. # # The state of SOUTH AUSTRALIA....[ Courtesy of S.A. Dept of Labour ]
  1060. # # [ Nov 1990 ]
  1061. # ...
  1062. # Zone Australia/South 9:30 AS %sST
  1063. # ...
  1064. # Rule AS 1971 max - Oct lastSun 2:00 1:00 D
  1065. # Rule AS 1972 1985 - Mar Sun>=1 3:00 0 C
  1066. # Rule AS 1986 1990 - Mar Sun>=15 3:00 0 C
  1067. # Rule AS 1991 max - Mar Sun>=1 3:00 0 C
  1068. # From Bradley White (1992-03-11):
  1069. # Recent correspondence with a friend in Adelaide
  1070. # contained the following exchange: "Due to the Adelaide Festival,
  1071. # South Australia delays setting back our clocks for a few weeks."
  1072. # From Robert Elz (1992-03-13):
  1073. # I heard that apparently (or at least, it appears that)
  1074. # South Aus will have an extra 3 weeks daylight saving every even
  1075. # numbered year (from 1990). That's when the Adelaide Festival
  1076. # is on...
  1077. # From Robert Elz (1992-03-16, 00:57:07 +1000):
  1078. # DST didn't end in Adelaide today (yesterday)....
  1079. # But whether it's "4th Sunday" or "2nd last Sunday" I have no idea whatever...
  1080. # (it's just as likely to be "the Sunday we pick for this year"...).
  1081. # From Bradley White (1994-04-11):
  1082. # If Sun, 15 March, 1992 was at +1030 as kre asserts, but yet Sun, 20 March,
  1083. # 1994 was at +0930 as John Connolly's customer seems to assert, then I can
  1084. # only conclude that the actual rule is more complicated....
  1085. # From John Warburton (1994-10-07):
  1086. # The new Daylight Savings dates for South Australia ...
  1087. # was gazetted in the Government Hansard on Sep 26 1994....
  1088. # start on last Sunday in October and end in last sunday in March.
  1089. # From Paul Eggert (2007-07-23):
  1090. # See "southeast Australia" above for 2008 and later.
  1091. # Tasmania
  1092. # The rules for 1967 through 1991 were reported by George Shepherd
  1093. # via Simon Woodhead via Robert Elz (1991-03-06):
  1094. # # The state of TASMANIA.. [Courtesy Tasmanian Dept of Premier + Cabinet ]
  1095. # # [ Nov 1990 ]
  1096. # From Bill Hart via Guy Harris (1991-10-10):
  1097. # Oh yes, the new daylight savings rules are uniquely tasmanian, we have
  1098. # 6 weeks a year now when we are out of sync with the rest of Australia
  1099. # (but nothing new about that).
  1100. # From Alex Livingston (1999-10-04):
  1101. # I heard on the ABC (Australian Broadcasting Corporation) radio news on the
  1102. # (long) weekend that Tasmania, which usually goes its own way in this regard,
  1103. # has decided to join with most of NSW, the ACT, and most of Victoria
  1104. # (Australia) and start daylight saving on the last Sunday in August in 2000
  1105. # instead of the first Sunday in October.
  1106. # Sim Alam (2000-07-03) reported a legal citation for the 2000/2001 rules:
  1107. # http://www.thelaw.tas.gov.au/fragview/42++1968+GS3A@EN+2000070300
  1108. # From Paul Eggert (2007-07-23):
  1109. # See "southeast Australia" above for 2008 and later.
  1110. # Victoria
  1111. # The rules for 1971 through 1991 were reported by George Shepherd
  1112. # via Simon Woodhead via Robert Elz (1991-03-06):
  1113. # # The state of VICTORIA.. [ Courtesy of Vic. Dept of Premier + Cabinet ]
  1114. # # [ Nov 1990 ]
  1115. # From Scott Harrington (2001-08-29):
  1116. # On KQED's "City Arts and Lectures" program last night I heard an
  1117. # interesting story about daylight savings time. Dr. John Heilbron was
  1118. # discussing his book "The Sun in the Church: Cathedrals as Solar
  1119. # Observatories"[1], and in particular the Shrine of Remembrance[2] located
  1120. # in Melbourne, Australia.
  1121. #
  1122. # Apparently the shrine's main purpose is a beam of sunlight which
  1123. # illuminates a special spot on the floor at the 11th hour of the 11th day
  1124. # of the 11th month (Remembrance Day) every year in memory of Australia's
  1125. # fallen WWI soldiers. And if you go there on Nov. 11, at 11am local time,
  1126. # you will indeed see the sunbeam illuminate the special spot at the
  1127. # expected time.
  1128. #
  1129. # However, that is only because of some special mirror contraption that had
  1130. # to be employed, since due to daylight savings time, the true solar time of
  1131. # the remembrance moment occurs one hour later (or earlier?). Perhaps
  1132. # someone with more information on this jury-rig can tell us more.
  1133. #
  1134. # [1] http://www.hup.harvard.edu/catalog/HEISUN.html
  1135. # [2] http://www.shrine.org.au
  1136. # From Paul Eggert (2007-07-23):
  1137. # See "southeast Australia" above for 2008 and later.
  1138. # New South Wales
  1139. # From Arthur David Olson:
  1140. # New South Wales and subjurisdictions have their own ideas of a fun time.
  1141. # Based on law library research by John Mackin,
  1142. # who notes:
  1143. # In Australia, time is not legislated federally, but rather by the
  1144. # individual states. Thus, while such terms as "Eastern Standard Time"
  1145. # [I mean, of course, Australian EST, not any other kind] are in common
  1146. # use, _they have NO REAL MEANING_, as they are not defined in the
  1147. # legislation. This is very important to understand.
  1148. # I have researched New South Wales time only...
  1149. # From Eric Ulevik (1999-05-26):
  1150. # DST will start in NSW on the last Sunday of August, rather than the usual
  1151. # October in 2000. See: Matthew Moore,
  1152. # Two months more daylight saving, Sydney Morning Herald (1999-05-26).
  1153. # http://www.smh.com.au/news/9905/26/pageone/pageone4.html
  1154. # From Paul Eggert (1999-09-27):
  1155. # See the following official NSW source:
  1156. # Daylight Saving in New South Wales.
  1157. # http://dir.gis.nsw.gov.au/cgi-bin/genobject/document/other/daylightsaving/tigGmZ
  1158. #
  1159. # Narrabri Shire (NSW) council has announced it will ignore the extension of
  1160. # daylight saving next year. See:
  1161. # Narrabri Council to ignore daylight saving
  1162. # http://abc.net.au/news/regionals/neweng/monthly/regeng-22jul1999-1.htm
  1163. # (1999-07-22). For now, we'll wait to see if this really happens.
  1164. #
  1165. # Victoria will following NSW. See:
  1166. # Vic to extend daylight saving (1999-07-28)
  1167. # http://abc.net.au/local/news/olympics/1999/07/item19990728112314_1.htm
  1168. #
  1169. # However, South Australia rejected the DST request. See:
  1170. # South Australia rejects Olympics daylight savings request (1999-07-19)
  1171. # http://abc.net.au/news/olympics/1999/07/item19990719151754_1.htm
  1172. #
  1173. # Queensland also will not observe DST for the Olympics. See:
  1174. # Qld says no to daylight savings for Olympics
  1175. # http://abc.net.au/news/olympics/1999/06/item19990601114608_1.htm
  1176. # (1999-06-01), which quotes Queensland Premier Peter Beattie as saying
  1177. # "Look you've got to remember in my family when this came up last time
  1178. # I voted for it, my wife voted against it and she said to me it's all very
  1179. # well for you, you don't have to worry about getting the children out of
  1180. # bed, getting them to school, getting them to sleep at night.
  1181. # I've been through all this argument domestically...my wife rules."
  1182. #
  1183. # Broken Hill will stick with South Australian time in 2000. See:
  1184. # Broken Hill to be behind the times (1999-07-21)
  1185. # http://abc.net.au/news/regionals/brokenh/monthly/regbrok-21jul1999-6.htm
  1186. # IATA SSIM (1998-09) says that the spring 2000 change for Australian
  1187. # Capital Territory, New South Wales except Lord Howe Island and Broken
  1188. # Hill, and Victoria will be August 27, presumably due to the Sydney Olympics.
  1189. # From Eric Ulevik, referring to Sydney's Sun Herald (2000-08-13), page 29:
  1190. # The Queensland Premier Peter Beattie is encouraging northern NSW
  1191. # towns to use Queensland time.
  1192. # From Paul Eggert (2007-07-23):
  1193. # See "southeast Australia" above for 2008 and later.
  1194. # Yancowinna
  1195. # From John Mackin (1989-01-04):
  1196. # 'Broken Hill' means the County of Yancowinna.
  1197. # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
  1198. # # YANCOWINNA.. [ Confirmation courtesy of Broken Hill Postmaster ]
  1199. # # [ Dec 1990 ]
  1200. # ...
  1201. # # Yancowinna uses Central Standard Time, despite [its] location on the
  1202. # # New South Wales side of the S.A. border. Most business and social dealings
  1203. # # are with CST zones, therefore CST is legislated by local government
  1204. # # although the switch to Summer Time occurs in line with N.S.W. There have
  1205. # # been years when this did not apply, but the historical data is not
  1206. # # presently available.
  1207. # Zone Australia/Yancowinna 9:30 AY %sST
  1208. # ...
  1209. # Rule AY 1971 1985 - Oct lastSun 2:00 1:00 D
  1210. # Rule AY 1972 only - Feb lastSun 3:00 0 C
  1211. # [followed by other Rules]
  1212. # Lord Howe Island
  1213. # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
  1214. # LHI... [ Courtesy of Pauline Van Winsen ]
  1215. # [ Dec 1990 ]
  1216. # Lord Howe Island is located off the New South Wales coast, and is half an
  1217. # hour ahead of NSW time.
  1218. # From James Lonergan, Secretary, Lord Howe Island Board (2000-01-27):
  1219. # Lord Howe Island summer time in 2000/2001 will commence on the same
  1220. # date as the rest of NSW (i.e. 2000-08-27). For your information the
  1221. # Lord Howe Island Board (controlling authority for the Island) is
  1222. # seeking the community's views on various options for summer time
  1223. # arrangements on the Island, e.g. advance clocks by 1 full hour
  1224. # instead of only 30 minutes. [Dependent] on the wishes of residents
  1225. # the Board may approach the NSW government to change the existing
  1226. # arrangements. The starting date for summer time on the Island will
  1227. # however always coincide with the rest of NSW.
  1228. # From James Lonergan, Secretary, Lord Howe Island Board (2000-10-25):
  1229. # Lord Howe Island advances clocks by 30 minutes during DST in NSW and retards
  1230. # clocks by 30 minutes when DST finishes. Since DST was most recently
  1231. # introduced in NSW, the "changeover" time on the Island has been 02:00 as
  1232. # shown on clocks on LHI. I guess this means that for 30 minutes at the start
  1233. # of DST, LHI is actually 1 hour ahead of the rest of NSW.
  1234. # From Paul Eggert (2006-03-22):
  1235. # For Lord Howe dates we use Shanks & Pottenger through 1989, and
  1236. # Lonergan thereafter. For times we use Lonergan.
  1237. # From Paul Eggert (2007-07-23):
  1238. # See "southeast Australia" above for 2008 and later.
  1239. # From Steffen Thorsen (2009-04-28):
  1240. # According to the official press release, South Australia's extended daylight
  1241. # saving period will continue with the same rules as used during the 2008-2009
  1242. # summer (southern hemisphere).
  1243. #
  1244. # From
  1245. # http://www.safework.sa.gov.au/uploaded_files/DaylightDatesSet.pdf
  1246. # The extended daylight saving period that South Australia has been trialling
  1247. # for over the last year is now set to be ongoing.
  1248. # Daylight saving will continue to start on the first Sunday in October each
  1249. # year and finish on the first Sunday in April the following year.
  1250. # Industrial Relations Minister, Paul Caica, says this provides South Australia
  1251. # with a consistent half hour time difference with NSW, Victoria, Tasmania and
  1252. # the ACT for all 52 weeks of the year...
  1253. #
  1254. # We have a wrap-up here:
  1255. # http://www.timeanddate.com/news/time/south-australia-extends-dst.html
  1256. ###############################################################################
  1257. # New Zealand
  1258. # From Mark Davies (1990-10-03):
  1259. # the 1989/90 year was a trial of an extended "daylight saving" period.
  1260. # This trial was deemed successful and the extended period adopted for
  1261. # subsequent years (with the addition of a further week at the start).
  1262. # source - phone call to Ministry of Internal Affairs Head Office.
  1263. # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
  1264. # # The Country of New Zealand (Australia's east island -) Gee they hate that!
  1265. # # or is Australia the west island of N.Z.
  1266. # # [ courtesy of Geoff Tribble.. Auckland N.Z. ]
  1267. # # [ Nov 1990 ]
  1268. # ...
  1269. # Rule NZ 1974 1988 - Oct lastSun 2:00 1:00 D
  1270. # Rule NZ 1989 max - Oct Sun>=1 2:00 1:00 D
  1271. # Rule NZ 1975 1989 - Mar Sun>=1 3:00 0 S
  1272. # Rule NZ 1990 max - Mar lastSun 3:00 0 S
  1273. # ...
  1274. # Zone NZ 12:00 NZ NZ%sT # New Zealand
  1275. # Zone NZ-CHAT 12:45 - NZ-CHAT # Chatham Island
  1276. # From Arthur David Olson (1992-03-08):
  1277. # The chosen rules use the Davies October 8 values for the start of DST in 1989
  1278. # rather than the October 1 value.
  1279. # From Paul Eggert (1995-12-19);
  1280. # Shank & Pottenger report 2:00 for all autumn changes in Australia and NZ.
  1281. # Robert Uzgalis writes that the New Zealand Daylight
  1282. # Savings Time Order in Council dated 1990-06-18 specifies 2:00 standard
  1283. # time on both the first Sunday in October and the third Sunday in March.
  1284. # As with Australia, we'll assume the tradition is 2:00s, not 2:00.
  1285. #
  1286. # From Paul Eggert (2006-03-22):
  1287. # The Department of Internal Affairs (DIA) maintains a brief history,
  1288. # as does Carol Squires; see tz-link.htm for the full references.
  1289. # Use these sources in preference to Shanks & Pottenger.
  1290. #
  1291. # For Chatham, IATA SSIM (1991/1999) gives the NZ rules but with
  1292. # transitions at 2:45 local standard time; this confirms that Chatham
  1293. # is always exactly 45 minutes ahead of Auckland.
  1294. # From Colin Sharples (2007-04-30):
  1295. # DST will now start on the last Sunday in September, and end on the
  1296. # first Sunday in April. The changes take effect this year, meaning
  1297. # that DST will begin on 2007-09-30 2008-04-06.
  1298. # http://www.dia.govt.nz/diawebsite.nsf/wpg_URL/Services-Daylight-Saving-Daylight-saving-to-be-extended
  1299. # From Paul Eggert (2014-07-14):
  1300. # Chatham Island time was formally standardized on 1957-01-01 by
  1301. # New Zealand's Standard Time Amendment Act 1956 (1956-10-26).
  1302. # http://www.austlii.edu.au/nz/legis/hist_act/staa19561956n100244.pdf
  1303. # According to Google Books snippet view, a speaker in the New Zealand
  1304. # parliamentary debates in 1956 said "Clause 78 makes provision for standard
  1305. # time in the Chatham Islands. The time there is 45 minutes in advance of New
  1306. # Zealand time. I understand that is the time they keep locally, anyhow."
  1307. # For now, assume this practice goes back to the introduction of standard time
  1308. # in New Zealand, as this would make Chatham Islands time almost exactly match
  1309. # LMT back when New Zealand was at UTC+11:30; also, assume Chatham Islands did
  1310. # not observe New Zealand's prewar DST.
  1311. ###############################################################################
  1312. # Fiji
  1313. # Howse writes (p 153) that in 1879 the British governor of Fiji
  1314. # enacted an ordinance standardizing the islands on Antipodean Time
  1315. # instead of the American system (which was one day behind).
  1316. # From Rives McDow (1998-10-08):
  1317. # Fiji will introduce DST effective 0200 local time, 1998-11-01
  1318. # until 0300 local time 1999-02-28. Each year the DST period will
  1319. # be from the first Sunday in November until the last Sunday in February.
  1320. # From Paul Eggert (2000-01-08):
  1321. # IATA SSIM (1999-09) says DST ends 0100 local time. Go with McDow.
  1322. # From the BBC World Service in
  1323. # http://news.bbc.co.uk/2/hi/asia-pacific/205226.stm (1998-10-31 16:03 UTC):
  1324. # The Fijian government says the main reasons for the time change is to
  1325. # improve productivity and reduce road accidents.... [T]he move is also
  1326. # intended to boost Fiji's ability to attract tourists to witness the dawning
  1327. # of the new millennium.
  1328. # http://www.fiji.gov.fj/press/2000_09/2000_09_13-05.shtml (2000-09-13)
  1329. # reports that Fiji has discontinued DST.
  1330. # Kiribati
  1331. # From Paul Eggert (1996-01-22):
  1332. # Today's _Wall Street Journal_ (page 1) reports that Kiribati
  1333. # "declared it the same day [throughout] the country as of Jan. 1, 1995"
  1334. # as part of the competition to be first into the 21st century.
  1335. # Kwajalein
  1336. # In comp.risks 14.87 (26 August 1993), Peter Neumann writes:
  1337. # I wonder what happened in Kwajalein, where there was NO Friday,
  1338. # 1993-08-20. Thursday night at midnight Kwajalein switched sides with
  1339. # respect to the International Date Line, to rejoin its fellow islands,
  1340. # going from 11:59 p.m. Thursday to 12:00 m. Saturday in a blink.
  1341. # N Mariana Is, Guam
  1342. # Howse writes (p 153) "The Spaniards, on the other hand, reached the
  1343. # Philippines and the Ladrones from America," and implies that the Ladrones
  1344. # (now called the Marianas) kept American date for quite some time.
  1345. # For now, we assume the Ladrones switched at the same time as the Philippines;
  1346. # see Asia/Manila.
  1347. # US Public Law 106-564 (2000-12-23) made UTC+10 the official standard time,
  1348. # under the name "Chamorro Standard Time". There is no official abbreviation,
  1349. # but Congressman Robert A. Underwood, author of the bill that became law,
  1350. # wrote in a press release (2000-12-27) that he will seek the use of "ChST".
  1351. # Micronesia
  1352. # Alan Eugene Davis writes (1996-03-16),
  1353. # "I am certain, having lived there for the past decade, that 'Truk'
  1354. # (now properly known as Chuuk) ... is in the time zone GMT+10."
  1355. #
  1356. # Shanks & Pottenger write that Truk switched from UTC+10 to UTC+11
  1357. # on 1978-10-01; ignore this for now.
  1358. # From Paul Eggert (1999-10-29):
  1359. # The Federated States of Micronesia Visitors Board writes in
  1360. # The Federated States of Micronesia - Visitor Information (1999-01-26)
  1361. # http://www.fsmgov.org/info/clocks.html
  1362. # that Truk and Yap are UTC+10, and Ponape and Kosrae are UTC+11.
  1363. # We don't know when Kosrae switched from UTC+12; assume January 1 for now.
  1364. # Midway
  1365. # From Charles T O'Connor, KMTH DJ (1956),
  1366. # quoted in the KTMH section of the Radio Heritage Collection
  1367. # <http://radiodx.com/spdxr/KMTH.htm> (2002-12-31):
  1368. # For the past two months we've been on what is known as Daylight
  1369. # Saving Time. This time has put us on air at 5am in the morning,
  1370. # your time down there in New Zealand. Starting September 2, 1956
  1371. # we'll again go back to Standard Time. This'll mean that we'll go to
  1372. # air at 6am your time.
  1373. #
  1374. # From Paul Eggert (2003-03-23):
  1375. # We don't know the date of that quote, but we'll guess they
  1376. # started DST on June 3. Possibly DST was observed other years
  1377. # in Midway, but we have no record of it.
  1378. # Norfolk
  1379. # From Alexander Krivenyshev (2015-09-23):
  1380. # Norfolk Island will change ... from +1130 to +1100:
  1381. # https://www.comlaw.gov.au/Details/F2015L01483/Explanatory%20Statement/Text
  1382. # ... at 12.30 am (by legal time in New South Wales) on 4 October 2015.
  1383. # http://www.norfolkisland.gov.nf/nia/MediaRelease/Media%20Release%20Norfolk%20Island%20Standard%20Time%20Change.pdf
  1384. # From Paul Eggert (2015-09-23):
  1385. # Transitions before 2015 are from timeanddate.com, which consulted
  1386. # the Norfolk Island Museum and the Australian Bureau of Meteorology's
  1387. # Norfolk Island station, and found no record of Norfolk observing DST
  1388. # other than in 1974/5. See:
  1389. # http://www.timeanddate.com/time/australia/norfolk-island.html
  1390. # Pitcairn
  1391. # From Rives McDow (1999-11-08):
  1392. # A Proclamation was signed by the Governor of Pitcairn on the 27th March 1998
  1393. # with regard to Pitcairn Standard Time. The Proclamation is as follows.
  1394. #
  1395. # The local time for general purposes in the Islands shall be
  1396. # Co-ordinated Universal time minus 8 hours and shall be known
  1397. # as Pitcairn Standard Time.
  1398. #
  1399. # ... I have also seen Pitcairn listed as UTC minus 9 hours in several
  1400. # references, and can only assume that this was an error in interpretation
  1401. # somehow in light of this proclamation.
  1402. # From Rives McDow (1999-11-09):
  1403. # The Proclamation regarding Pitcairn time came into effect on 27 April 1998
  1404. # ... at midnight.
  1405. # From Howie Phelps (1999-11-10), who talked to a Pitcairner via shortwave:
  1406. # Betty Christian told me yesterday that their local time is the same as
  1407. # Pacific Standard Time. They used to be 1/2 hour different from us here in
  1408. # Sacramento but it was changed a couple of years ago.
  1409. # (Western) Samoa and American Samoa
  1410. # Howse writes (p 153, citing p 10 of the 1883-11-18 New York Herald)
  1411. # that in 1879 the King of Samoa decided to change
  1412. # "the date in his kingdom from the Antipodean to the American system,
  1413. # ordaining - by a masterpiece of diplomatic flattery - that
  1414. # the Fourth of July should be celebrated twice in that year."
  1415. # Although Shanks & Pottenger says they both switched to UTC-11:30
  1416. # in 1911, and to UTC-11 in 1950. many earlier sources give UTC-11
  1417. # for American Samoa, e.g., the US National Bureau of Standards
  1418. # circular "Standard Time Throughout the World", 1932.
  1419. # Assume American Samoa switched to UTC-11 in 1911, not 1950,
  1420. # and that after 1950 they agreed until (western) Samoa skipped a
  1421. # day in 2011. Assume also that the Samoas follow the US and New
  1422. # Zealand's "ST"/"DT" style of daylight-saving abbreviations.
  1423. # Tonga
  1424. # From Paul Eggert (1996-01-22):
  1425. # Today's _Wall Street Journal_ (p 1) reports that "Tonga has been plotting
  1426. # to sneak ahead of [New Zealanders] by introducing daylight-saving time."
  1427. # Since Kiribati has moved the Date Line it's not clear what Tonga will do.
  1428. # Don Mundell writes in the 1997-02-20 Tonga Chronicle
  1429. # How Tonga became 'The Land where Time Begins':
  1430. # http://www.tongatapu.net.to/tonga/homeland/timebegins.htm
  1431. #
  1432. # Until 1941 Tonga maintained a standard time 50 minutes ahead of NZST
  1433. # 12 hours and 20 minutes ahead of GMT. When New Zealand adjusted its
  1434. # standard time in 1940s, Tonga had the choice of subtracting from its
  1435. # local time to come on the same standard time as New Zealand or of
  1436. # advancing its time to maintain the differential of 13 degrees
  1437. # (approximately 50 minutes ahead of New Zealand time).
  1438. #
  1439. # Because His Majesty King Tāufaʻāhau Tupou IV, then Crown Prince
  1440. # Tungī, preferred to ensure Tonga's title as the land where time
  1441. # begins, the Legislative Assembly approved the latter change.
  1442. #
  1443. # But some of the older, more conservative members from the outer
  1444. # islands objected. "If at midnight on Dec. 31, we move ahead 40
  1445. # minutes, as your Royal Highness wishes, what becomes of the 40
  1446. # minutes we have lost?"
  1447. #
  1448. # The Crown Prince, presented an unanswerable argument: "Remember that
  1449. # on the World Day of Prayer, you would be the first people on Earth
  1450. # to say your prayers in the morning."
  1451. # From Paul Eggert (2006-03-22):
  1452. # Shanks & Pottenger say the transition was on 1968-10-01; go with Mundell.
  1453. # From Eric Ulevik (1999-05-03):
  1454. # Tonga's director of tourism, who is also secretary of the National Millennium
  1455. # Committee, has a plan to get Tonga back in front.
  1456. # He has proposed a one-off move to tropical daylight saving for Tonga from
  1457. # October to March, which has won approval in principle from the Tongan
  1458. # Government.
  1459. # From Steffen Thorsen (1999-09-09):
  1460. # * Tonga will introduce DST in November
  1461. #
  1462. # I was given this link by John Letts:
  1463. # http://news.bbc.co.uk/hi/english/world/asia-pacific/newsid_424000/424764.stm
  1464. #
  1465. # I have not been able to find exact dates for the transition in November
  1466. # yet. By reading this article it seems like Fiji will be 14 hours ahead
  1467. # of UTC as well, but as far as I know Fiji will only be 13 hours ahead
  1468. # (12 + 1 hour DST).
  1469. # From Arthur David Olson (1999-09-20):
  1470. # According to <http://www.tongaonline.com/news/sept1799.html>:
  1471. # "Daylight Savings Time will take effect on Oct. 2 through April 15, 2000
  1472. # and annually thereafter from the first Saturday in October through the
  1473. # third Saturday of April. Under the system approved by Privy Council on
  1474. # Sept. 10, clocks must be turned ahead one hour on the opening day and
  1475. # set back an hour on the closing date."
  1476. # Alas, no indication of the time of day.
  1477. # From Rives McDow (1999-10-06):
  1478. # Tonga started its Daylight Saving on Saturday morning October 2nd at 0200am.
  1479. # Daylight Saving ends on April 16 at 0300am which is Sunday morning.
  1480. # From Steffen Thorsen (2000-10-31):
  1481. # Back in March I found a notice on the website http://www.tongaonline.com
  1482. # that Tonga changed back to standard time one month early, on March 19
  1483. # instead of the original reported date April 16. Unfortunately, the article
  1484. # is no longer available on the site, and I did not make a copy of the
  1485. # text, and I have forgotten to report it here.
  1486. # (Original URL was <http://www.tongaonline.com/news/march162000.htm>)
  1487. # From Rives McDow (2000-12-01):
  1488. # Tonga is observing DST as of 2000-11-04 and will stop on 2001-01-27.
  1489. # From Sione Moala-Mafi (2001-09-20) via Rives McDow:
  1490. # At 2:00am on the first Sunday of November, the standard time in the Kingdom
  1491. # shall be moved forward by one hour to 3:00am. At 2:00am on the last Sunday
  1492. # of January the standard time in the Kingdom shall be moved backward by one
  1493. # hour to 1:00am.
  1494. # From Pulu 'Anau (2002-11-05):
  1495. # The law was for 3 years, supposedly to get renewed. It wasn't.
  1496. # Wake
  1497. # From Vernice Anderson, Personal Secretary to Philip Jessup,
  1498. # US Ambassador At Large (oral history interview, 1971-02-02):
  1499. #
  1500. # Saturday, the 14th [of October, 1950] - ... The time was all the
  1501. # more confusing at that point, because we had crossed the
  1502. # International Date Line, thus getting two Sundays. Furthermore, we
  1503. # discovered that Wake Island had two hours of daylight saving time
  1504. # making calculation of time in Washington difficult if not almost
  1505. # impossible.
  1506. #
  1507. # http://www.trumanlibrary.org/wake/meeting.htm
  1508. # From Paul Eggert (2003-03-23):
  1509. # We have no other report of DST in Wake Island, so omit this info for now.
  1510. ###############################################################################
  1511. # The International Date Line
  1512. # From Gwillim Law (2000-01-03):
  1513. #
  1514. # The International Date Line is not defined by any international standard,
  1515. # convention, or treaty. Mapmakers are free to draw it as they please.
  1516. # Reputable mapmakers will simply ensure that every point of land appears on
  1517. # the correct side of the IDL, according to the date legally observed there.
  1518. #
  1519. # When Kiribati adopted a uniform date in 1995, thereby moving the Phoenix and
  1520. # Line Islands to the west side of the IDL (or, if you prefer, moving the IDL
  1521. # to the east side of the Phoenix and Line Islands), I suppose that most
  1522. # mapmakers redrew the IDL following the boundary of Kiribati. Even that line
  1523. # has a rather arbitrary nature. The straight-line boundaries between Pacific
  1524. # island nations that are shown on many maps are based on an international
  1525. # convention, but are not legally binding national borders.... The date is
  1526. # governed by the IDL; therefore, even on the high seas, there may be some
  1527. # places as late as fourteen hours later than UTC. And, since the IDL is not
  1528. # an international standard, there are some places on the high seas where the
  1529. # correct date is ambiguous.
  1530. # From Wikipedia <http://en.wikipedia.org/wiki/Time_zone> (2005-08-31):
  1531. # Before 1920, all ships kept local apparent time on the high seas by setting
  1532. # their clocks at night or at the morning sight so that, given the ship's
  1533. # speed and direction, it would be 12 o'clock when the Sun crossed the ship's
  1534. # meridian (12 o'clock = local apparent noon). During 1917, at the
  1535. # Anglo-French Conference on Time-keeping at Sea, it was recommended that all
  1536. # ships, both military and civilian, should adopt hourly standard time zones
  1537. # on the high seas. Whenever a ship was within the territorial waters of any
  1538. # nation it would use that nation's standard time. The captain was permitted
  1539. # to change his ship's clocks at a time of his choice following his ship's
  1540. # entry into another zone time - he often chose midnight. These zones were
  1541. # adopted by all major fleets between 1920 and 1925 but not by many
  1542. # independent merchant ships until World War II.
  1543. # From Paul Eggert, using references suggested by Oscar van Vlijmen
  1544. # (2005-03-20):
  1545. #
  1546. # The American Practical Navigator (2002)
  1547. # http://pollux.nss.nima.mil/pubs/pubs_j_apn_sections.html?rid=187
  1548. # talks only about the 180-degree meridian with respect to ships in
  1549. # international waters; it ignores the international date line.