1 # This file is in the public domain, so clarified as of
2 # 2009-05-17 by Arthur David Olson.
4 # This file also includes Pacific islands.
6 # Notes are at the end of this file
8 ###############################################################################
12 # Please see the notes below for the controversy about "EST" versus "AEST" etc.
14 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
15 Rule Aus 1917 only - Jan 1 0:01 1:00 D
16 Rule Aus 1917 only - Mar 25 2:00 0 S
17 Rule Aus 1942 only - Jan 1 2:00 1:00 D
18 Rule Aus 1942 only - Mar 29 2:00 0 S
19 Rule Aus 1942 only - Sep 27 2:00 1:00 D
20 Rule Aus 1943 1944 - Mar lastSun 2:00 0 S
21 Rule Aus 1943 only - Oct 3 2:00 1:00 D
22 # Go with Whitman and the Australian National Standards Commission, which
23 # says W Australia didn't use DST in 1943/1944. Ignore Whitman's claim that
24 # 1944/1945 was just like 1943/1944.
26 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
28 Zone Australia/Darwin 8:43:20 - LMT 1895 Feb
33 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
34 Rule AW 1974 only - Oct lastSun 2:00s 1:00 D
35 Rule AW 1975 only - Mar Sun>=1 2:00s 0 S
36 Rule AW 1983 only - Oct lastSun 2:00s 1:00 D
37 Rule AW 1984 only - Mar Sun>=1 2:00s 0 S
38 Rule AW 1991 only - Nov 17 2:00s 1:00 D
39 Rule AW 1992 only - Mar Sun>=1 2:00s 0 S
40 Rule AW 2006 only - Dec 3 2:00s 1:00 D
41 Rule AW 2007 2009 - Mar lastSun 2:00s 0 S
42 Rule AW 2007 2008 - Oct lastSun 2:00s 1:00 D
43 Zone Australia/Perth 7:43:24 - LMT 1895 Dec
44 8:00 Aus AW%sT 1943 Jul
46 Zone Australia/Eucla 8:35:28 - LMT 1895 Dec
47 8:45 Aus ACW%sT 1943 Jul
52 # From Alex Livingston (1996-11-01):
53 # I have heard or read more than once that some resort islands off the coast
54 # of Queensland chose to keep observing daylight-saving time even after
55 # Queensland ceased to.
57 # From Paul Eggert (1996-11-22):
58 # IATA SSIM (1993-02/1994-09) say that the Holiday Islands (Hayman, Lindeman,
59 # Hamilton) observed DST for two years after the rest of Queensland stopped.
60 # Hamilton is the largest, but there is also a Hamilton in Victoria,
63 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
64 Rule AQ 1971 only - Oct lastSun 2:00s 1:00 D
65 Rule AQ 1972 only - Feb lastSun 2:00s 0 S
66 Rule AQ 1989 1991 - Oct lastSun 2:00s 1:00 D
67 Rule AQ 1990 1992 - Mar Sun>=1 2:00s 0 S
68 Rule Holiday 1992 1993 - Oct lastSun 2:00s 1:00 D
69 Rule Holiday 1993 1994 - Mar Sun>=1 2:00s 0 S
70 Zone Australia/Brisbane 10:12:08 - LMT 1895
73 Zone Australia/Lindeman 9:55:56 - LMT 1895
75 10:00 AQ AE%sT 1992 Jul
79 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
80 Rule AS 1971 1985 - Oct lastSun 2:00s 1:00 D
81 Rule AS 1986 only - Oct 19 2:00s 1:00 D
82 Rule AS 1987 2007 - Oct lastSun 2:00s 1:00 D
83 Rule AS 1972 only - Feb 27 2:00s 0 S
84 Rule AS 1973 1985 - Mar Sun>=1 2:00s 0 S
85 Rule AS 1986 1990 - Mar Sun>=15 2:00s 0 S
86 Rule AS 1991 only - Mar 3 2:00s 0 S
87 Rule AS 1992 only - Mar 22 2:00s 0 S
88 Rule AS 1993 only - Mar 7 2:00s 0 S
89 Rule AS 1994 only - Mar 20 2:00s 0 S
90 Rule AS 1995 2005 - Mar lastSun 2:00s 0 S
91 Rule AS 2006 only - Apr 2 2:00s 0 S
92 Rule AS 2007 only - Mar lastSun 2:00s 0 S
93 Rule AS 2008 max - Apr Sun>=1 2:00s 0 S
94 Rule AS 2008 max - Oct Sun>=1 2:00s 1:00 D
95 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
96 Zone Australia/Adelaide 9:14:20 - LMT 1895 Feb
103 # From Paul Eggert (2005-08-16):
104 # http://www.bom.gov.au/climate/averages/tables/dst_times.shtml
105 # says King Island didn't observe DST from WWII until late 1971.
107 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
108 Rule AT 1967 only - Oct Sun>=1 2:00s 1:00 D
109 Rule AT 1968 only - Mar lastSun 2:00s 0 S
110 Rule AT 1968 1985 - Oct lastSun 2:00s 1:00 D
111 Rule AT 1969 1971 - Mar Sun>=8 2:00s 0 S
112 Rule AT 1972 only - Feb lastSun 2:00s 0 S
113 Rule AT 1973 1981 - Mar Sun>=1 2:00s 0 S
114 Rule AT 1982 1983 - Mar lastSun 2:00s 0 S
115 Rule AT 1984 1986 - Mar Sun>=1 2:00s 0 S
116 Rule AT 1986 only - Oct Sun>=15 2:00s 1:00 D
117 Rule AT 1987 1990 - Mar Sun>=15 2:00s 0 S
118 Rule AT 1987 only - Oct Sun>=22 2:00s 1:00 D
119 Rule AT 1988 1990 - Oct lastSun 2:00s 1:00 D
120 Rule AT 1991 1999 - Oct Sun>=1 2:00s 1:00 D
121 Rule AT 1991 2005 - Mar lastSun 2:00s 0 S
122 Rule AT 2000 only - Aug lastSun 2:00s 1:00 D
123 Rule AT 2001 max - Oct Sun>=1 2:00s 1:00 D
124 Rule AT 2006 only - Apr Sun>=1 2:00s 0 S
125 Rule AT 2007 only - Mar lastSun 2:00s 0 S
126 Rule AT 2008 max - Apr Sun>=1 2:00s 0 S
127 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
128 Zone Australia/Hobart 9:49:16 - LMT 1895 Sep
129 10:00 - AEST 1916 Oct 1 2:00
130 10:00 1:00 AEDT 1917 Feb
133 Zone Australia/Currie 9:35:28 - LMT 1895 Sep
134 10:00 - AEST 1916 Oct 1 2:00
135 10:00 1:00 AEDT 1917 Feb
136 10:00 Aus AE%sT 1971 Jul
140 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
141 Rule AV 1971 1985 - Oct lastSun 2:00s 1:00 D
142 Rule AV 1972 only - Feb lastSun 2:00s 0 S
143 Rule AV 1973 1985 - Mar Sun>=1 2:00s 0 S
144 Rule AV 1986 1990 - Mar Sun>=15 2:00s 0 S
145 Rule AV 1986 1987 - Oct Sun>=15 2:00s 1:00 D
146 Rule AV 1988 1999 - Oct lastSun 2:00s 1:00 D
147 Rule AV 1991 1994 - Mar Sun>=1 2:00s 0 S
148 Rule AV 1995 2005 - Mar lastSun 2:00s 0 S
149 Rule AV 2000 only - Aug lastSun 2:00s 1:00 D
150 Rule AV 2001 2007 - Oct lastSun 2:00s 1:00 D
151 Rule AV 2006 only - Apr Sun>=1 2:00s 0 S
152 Rule AV 2007 only - Mar lastSun 2:00s 0 S
153 Rule AV 2008 max - Apr Sun>=1 2:00s 0 S
154 Rule AV 2008 max - Oct Sun>=1 2:00s 1:00 D
155 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
156 Zone Australia/Melbourne 9:39:52 - LMT 1895 Feb
161 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
162 Rule AN 1971 1985 - Oct lastSun 2:00s 1:00 D
163 Rule AN 1972 only - Feb 27 2:00s 0 S
164 Rule AN 1973 1981 - Mar Sun>=1 2:00s 0 S
165 Rule AN 1982 only - Apr Sun>=1 2:00s 0 S
166 Rule AN 1983 1985 - Mar Sun>=1 2:00s 0 S
167 Rule AN 1986 1989 - Mar Sun>=15 2:00s 0 S
168 Rule AN 1986 only - Oct 19 2:00s 1:00 D
169 Rule AN 1987 1999 - Oct lastSun 2:00s 1:00 D
170 Rule AN 1990 1995 - Mar Sun>=1 2:00s 0 S
171 Rule AN 1996 2005 - Mar lastSun 2:00s 0 S
172 Rule AN 2000 only - Aug lastSun 2:00s 1:00 D
173 Rule AN 2001 2007 - Oct lastSun 2:00s 1:00 D
174 Rule AN 2006 only - Apr Sun>=1 2:00s 0 S
175 Rule AN 2007 only - Mar lastSun 2:00s 0 S
176 Rule AN 2008 max - Apr Sun>=1 2:00s 0 S
177 Rule AN 2008 max - Oct Sun>=1 2:00s 1:00 D
178 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
179 Zone Australia/Sydney 10:04:52 - LMT 1895 Feb
182 Zone Australia/Broken_Hill 9:25:48 - LMT 1895 Feb
183 10:00 - AEST 1896 Aug 23
190 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
191 Rule LH 1981 1984 - Oct lastSun 2:00 1:00 D
192 Rule LH 1982 1985 - Mar Sun>=1 2:00 0 S
193 Rule LH 1985 only - Oct lastSun 2:00 0:30 D
194 Rule LH 1986 1989 - Mar Sun>=15 2:00 0 S
195 Rule LH 1986 only - Oct 19 2:00 0:30 D
196 Rule LH 1987 1999 - Oct lastSun 2:00 0:30 D
197 Rule LH 1990 1995 - Mar Sun>=1 2:00 0 S
198 Rule LH 1996 2005 - Mar lastSun 2:00 0 S
199 Rule LH 2000 only - Aug lastSun 2:00 0:30 D
200 Rule LH 2001 2007 - Oct lastSun 2:00 0:30 D
201 Rule LH 2006 only - Apr Sun>=1 2:00 0 S
202 Rule LH 2007 only - Mar lastSun 2:00 0 S
203 Rule LH 2008 max - Apr Sun>=1 2:00 0 S
204 Rule LH 2008 max - Oct Sun>=1 2:00 0:30 D
205 Zone Australia/Lord_Howe 10:36:20 - LMT 1895 Feb
206 10:00 - AEST 1981 Mar
209 # Australian miscellany
211 # Ashmore Is, Cartier
212 # no indigenous inhabitants; only seasonal caretakers
216 # no indigenous inhabitants; only meteorologists
220 # Permanent occupation (scientific station) 1911-1915 and since 25 March 1948;
221 # sealing and penguin oil station operated Nov 1899 to Apr 1919. See the
222 # Tasmania Parks & Wildlife Service history of sealing at Macquarie Island
223 # http://www.parks.tas.gov.au/index.aspx?base=1828
224 # http://www.parks.tas.gov.au/index.aspx?base=1831
225 # Guess that it was like Australia/Hobart while inhabited before 2010.
227 # From Steffen Thorsen (2010-03-10):
228 # We got these changes from the Australian Antarctic Division:
229 # - Macquarie Island will stay on UTC+11 for winter and therefore not
230 # switch back from daylight savings time when other parts of Australia do
233 # From Arthur David Olson (2013-05-23):
234 # The 1919 transition is overspecified below so pre-2013 zics
235 # will produce a binary file with an [A]EST-type as the first 32-bit type;
236 # this is required for correct handling of times before 1916 by
237 # pre-2013 versions of localtime.
238 Zone Antarctica/Macquarie 0 - zzz 1899 Nov
239 10:00 - AEST 1916 Oct 1 2:00
240 10:00 1:00 AEDT 1917 Feb
241 10:00 Aus AE%sT 1919 Apr 1 0:00s
244 10:00 AT AE%sT 2010 Apr 4 3:00
245 11:00 - MIST # Macquarie I Standard Time
248 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
249 Zone Indian/Christmas 7:02:52 - LMT 1895 Feb
250 7:00 - CXT # Christmas Island Time
253 # These islands were ruled by the Ross family from about 1830 to 1978.
254 # We don't know when standard time was introduced; for now, we guess 1900.
255 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
256 Zone Indian/Cocos 6:27:40 - LMT 1900
257 6:30 - CCT # Cocos Islands Time
262 # Milne gives 11:55:44 for Suva.
264 # From Alexander Krivenyshev (2009-11-10):
265 # According to Fiji Broadcasting Corporation, Fiji plans to re-introduce DST
266 # from November 29th 2009 to April 25th 2010.
268 # "Daylight savings to commence this month"
269 # http://www.radiofiji.com.fj/fullstory.php?id=23719
270 # http://www.worldtimezone.com/dst_news/dst_news_fiji01.html
272 # From Steffen Thorsen (2009-11-10):
273 # The Fiji Government has posted some more details about the approved
275 # http://www.fiji.gov.fj/publish/page_16198.shtml
277 # From Steffen Thorsen (2010-03-03):
278 # The Cabinet in Fiji has decided to end DST about a month early, on
279 # 2010-03-28 at 03:00.
280 # The plan is to observe DST again, from 2010-10-24 to sometime in March
281 # 2011 (last Sunday a good guess?).
284 # 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
286 # A bit more background info here:
287 # http://www.timeanddate.com/news/time/fiji-dst-ends-march-2010.html
289 # From Alexander Krivenyshev (2010-10-24):
290 # According to Radio Fiji and Fiji Times online, Fiji will end DST 3
291 # weeks earlier than expected - on March 6, 2011, not March 27, 2011...
292 # Here is confirmation from Government of the Republic of the Fiji Islands,
293 # Ministry of Information (fiji.gov.fj) web site:
294 # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=2608:daylight-savings&catid=71:press-releases&Itemid=155
295 # http://www.worldtimezone.com/dst_news/dst_news_fiji04.html
297 # From Steffen Thorsen (2011-10-03):
298 # Now the dates have been confirmed, and at least our start date
299 # assumption was correct (end date was one week wrong).
301 # 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
303 # Members of the public are reminded to change their time to one hour in
304 # advance at 2am to 3am on October 23, 2011 and one hour back at 3am to
305 # 2am on February 26 next year.
307 # From Ken Rylander (2011-10-24)
308 # Another change to the Fiji DST end date. In the TZ database the end date for
309 # Fiji DST 2012, is currently Feb 26. This has been changed to Jan 22.
311 # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=5017:amendments-to-daylight-savings&catid=71:press-releases&Itemid=155
314 # The end of daylight saving scheduled initially for the 26th of February 2012
315 # has been brought forward to the 22nd of January 2012.
316 # The commencement of daylight saving will remain unchanged and start
317 # on the 23rd of October, 2011.
319 # From the Fiji Government Online Portal (2012-08-21) via Steffen Thorsen:
320 # The Minister for Labour, Industrial Relations and Employment Mr Jone Usamate
321 # today confirmed that Fiji will start daylight savings at 2 am on Sunday 21st
322 # October 2012 and end at 3 am on Sunday 20th January 2013.
323 # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=6702&catid=71&Itemid=155
325 # From the Fijian Government Media Center (2013-08-30) via David Wheeler:
326 # Fiji will start daylight savings on Sunday 27th October, 2013 ...
327 # move clocks forward by one hour from 2am
328 # http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVING-STARTS-ON-SUNDAY,-27th-OCTOBER-201.aspx
330 # From Steffen Thorsen (2013-01-10):
331 # Fiji will end DST on 2014-01-19 02:00:
332 # http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVINGS-TO-END-THIS-MONTH-%281%29.aspx
334 # From Ken Rylander (2014-10-20):
335 # DST will start Nov. 2 this year.
336 # http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVING-STARTS-ON-SUNDAY,-NOVEMBER-2ND.aspx
338 # From Paul Eggert (2014-10-20):
339 # For now, guess DST from 02:00 the first Sunday in November to
340 # 03:00 the first Sunday on or after January 18. Although ad hoc, it
341 # matches this year's plan and seems more likely to match future
342 # practice than guessing no DST.
344 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
345 Rule Fiji 1998 1999 - Nov Sun>=1 2:00 1:00 S
346 Rule Fiji 1999 2000 - Feb lastSun 3:00 0 -
347 Rule Fiji 2009 only - Nov 29 2:00 1:00 S
348 Rule Fiji 2010 only - Mar lastSun 3:00 0 -
349 Rule Fiji 2010 2013 - Oct Sun>=21 2:00 1:00 S
350 Rule Fiji 2011 only - Mar Sun>=1 3:00 0 -
351 Rule Fiji 2012 2013 - Jan Sun>=18 3:00 0 -
352 Rule Fiji 2014 only - Jan Sun>=18 2:00 0 -
353 Rule Fiji 2014 max - Nov Sun>=1 2:00 1:00 S
354 Rule Fiji 2015 max - Jan Sun>=18 3:00 0 -
355 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
356 Zone Pacific/Fiji 11:55:44 - LMT 1915 Oct 26 # Suva
357 12:00 Fiji FJ%sT # Fiji Time
360 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
361 Zone Pacific/Gambier -8:59:48 - LMT 1912 Oct # Rikitea
362 -9:00 - GAMT # Gambier Time
363 Zone Pacific/Marquesas -9:18:00 - LMT 1912 Oct
364 -9:30 - MART # Marquesas Time
365 Zone Pacific/Tahiti -9:58:16 - LMT 1912 Oct # Papeete
366 -10:00 - TAHT # Tahiti Time
367 # Clipperton (near North America) is administered from French Polynesia;
371 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
372 Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31
373 9:39:00 - LMT 1901 # Agana
374 10:00 - GST 2000 Dec 23 # Guam
375 10:00 - ChST # Chamorro Standard Time
378 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
379 Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki
380 12:00 - GILT # Gilbert Is Time
381 Zone Pacific/Enderbury -11:24:20 - LMT 1901
382 -12:00 - PHOT 1979 Oct # Phoenix Is Time
385 Zone Pacific/Kiritimati -10:29:20 - LMT 1901
386 -10:40 - LINT 1979 Oct # Line Is Time
391 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
392 Zone Pacific/Saipan -14:17:00 - LMT 1844 Dec 31
394 9:00 - MPT 1969 Oct # N Mariana Is Time
395 10:00 - MPT 2000 Dec 23
396 10:00 - ChST # Chamorro Standard Time
399 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
400 Zone Pacific/Majuro 11:24:48 - LMT 1901
401 11:00 - MHT 1969 Oct # Marshall Islands Time
403 Zone Pacific/Kwajalein 11:09:20 - LMT 1901
405 -12:00 - KWAT 1993 Aug 20 # Kwajalein Time
409 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
410 Zone Pacific/Chuuk 10:07:08 - LMT 1901
411 10:00 - CHUT # Chuuk Time
412 Zone Pacific/Pohnpei 10:32:52 - LMT 1901 # Kolonia
413 11:00 - PONT # Pohnpei Time
414 Zone Pacific/Kosrae 10:51:56 - LMT 1901
415 11:00 - KOST 1969 Oct # Kosrae Time
420 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
421 Zone Pacific/Nauru 11:07:40 - LMT 1921 Jan 15 # Uaobe
422 11:30 - NRT 1942 Mar 15 # Nauru Time
423 9:00 - JST 1944 Aug 15
428 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
429 Rule NC 1977 1978 - Dec Sun>=1 0:00 1:00 S
430 Rule NC 1978 1979 - Feb 27 0:00 0 -
431 Rule NC 1996 only - Dec 1 2:00s 1:00 S
432 # Shanks & Pottenger say the following was at 2:00; go with IATA.
433 Rule NC 1997 only - Mar 2 2:00s 0 -
434 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
435 Zone Pacific/Noumea 11:05:48 - LMT 1912 Jan 13 # Nouméa
439 ###############################################################################
443 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
444 Rule NZ 1927 only - Nov 6 2:00 1:00 S
445 Rule NZ 1928 only - Mar 4 2:00 0 M
446 Rule NZ 1928 1933 - Oct Sun>=8 2:00 0:30 S
447 Rule NZ 1929 1933 - Mar Sun>=15 2:00 0 M
448 Rule NZ 1934 1940 - Apr lastSun 2:00 0 M
449 Rule NZ 1934 1940 - Sep lastSun 2:00 0:30 S
450 Rule NZ 1946 only - Jan 1 0:00 0 S
451 # Since 1957 Chatham has been 45 minutes ahead of NZ, but there's no
452 # convenient single notation for the date and time of this transition
453 # so we must duplicate the Rule lines.
454 Rule NZ 1974 only - Nov Sun>=1 2:00s 1:00 D
455 Rule Chatham 1974 only - Nov Sun>=1 2:45s 1:00 D
456 Rule NZ 1975 only - Feb lastSun 2:00s 0 S
457 Rule Chatham 1975 only - Feb lastSun 2:45s 0 S
458 Rule NZ 1975 1988 - Oct lastSun 2:00s 1:00 D
459 Rule Chatham 1975 1988 - Oct lastSun 2:45s 1:00 D
460 Rule NZ 1976 1989 - Mar Sun>=1 2:00s 0 S
461 Rule Chatham 1976 1989 - Mar Sun>=1 2:45s 0 S
462 Rule NZ 1989 only - Oct Sun>=8 2:00s 1:00 D
463 Rule Chatham 1989 only - Oct Sun>=8 2:45s 1:00 D
464 Rule NZ 1990 2006 - Oct Sun>=1 2:00s 1:00 D
465 Rule Chatham 1990 2006 - Oct Sun>=1 2:45s 1:00 D
466 Rule NZ 1990 2007 - Mar Sun>=15 2:00s 0 S
467 Rule Chatham 1990 2007 - Mar Sun>=15 2:45s 0 S
468 Rule NZ 2007 max - Sep lastSun 2:00s 1:00 D
469 Rule Chatham 2007 max - Sep lastSun 2:45s 1:00 D
470 Rule NZ 2008 max - Apr Sun>=1 2:00s 0 S
471 Rule Chatham 2008 max - Apr Sun>=1 2:45s 0 S
472 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
473 Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2
474 11:30 NZ NZ%sT 1946 Jan 1
476 Zone Pacific/Chatham 12:13:48 - LMT 1868 Nov 2
477 12:15 - CHAST 1946 Jan 1
480 Link Pacific/Auckland Antarctica/McMurdo
483 # uninhabited; Māori and Moriori, colonial settlers, pastoralists, sealers,
484 # and scientific personnel have wintered
487 # minor whaling stations operated 1909/1914
488 # scientific station operated 1941/1995;
489 # previously whalers, sealers, pastoralists, and scientific personnel wintered
490 # was probably like Pacific/Auckland
493 # From Shanks & Pottenger:
494 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
495 Rule Cook 1978 only - Nov 12 0:00 0:30 HS
496 Rule Cook 1979 1991 - Mar Sun>=1 0:00 0 -
497 Rule Cook 1979 1990 - Oct lastSun 0:00 0:30 HS
498 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
499 Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua
500 -10:30 - CKT 1978 Nov 12 # Cook Is Time
503 ###############################################################################
507 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
508 Zone Pacific/Niue -11:19:40 - LMT 1901 # Alofi
509 -11:20 - NUT 1951 # Niue Time
510 -11:30 - NUT 1978 Oct 1
514 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
515 Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston
516 11:12 - NMT 1951 # Norfolk Mean Time
517 11:30 - NFT # Norfolk Time
520 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
521 Zone Pacific/Palau 8:57:56 - LMT 1901 # Koror
522 9:00 - PWT # Palau Time
525 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
526 Zone Pacific/Port_Moresby 9:48:40 - LMT 1880
527 9:48:32 - PMMT 1895 # Port Moresby Mean Time
528 10:00 - PGT # Papua New Guinea Time
530 # From Paul Eggert (2014-10-13):
531 # Base the Bougainville entry on the Arawa-Kieta region, which appears to have
532 # the most people even though it was devastated in the Bougainville Civil War.
534 # Although Shanks gives 1942-03-15 / 1943-11-01 for JST, these dates
535 # are apparently rough guesswork from the starts of military campaigns.
536 # The World War II entries below are instead based on Arawa-Kieta.
537 # The Japanese occupied Kieta in July 1942,
538 # according to the Pacific War Online Encyclopedia
539 # http://pwencycl.kgbudge.com/B/o/Bougainville.htm
540 # and seem to have controlled it until their 1945-08-21 surrender.
542 # The Autonomous Region of Bougainville plans to switch from UTC+10 to UTC+11
543 # on 2014-12-28 at 02:00. They call UTC+11 "Bougainville Standard Time";
544 # abbreviate this as BST. See:
545 # http://www.bougainville24.com/bougainville-issues/bougainville-gets-own-timezone/
547 Zone Pacific/Bougainville 10:22:16 - LMT 1880
550 9:00 - JST 1945 Aug 21
551 10:00 - PGT 2014 Dec 28 2:00
555 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
556 Zone Pacific/Pitcairn -8:40:20 - LMT 1901 # Adamstown
557 -8:30 - PNT 1998 Apr 27 0:00
558 -8:00 - PST # Pitcairn Standard Time
561 Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5
563 -11:00 - NST 1967 Apr # N=Nome
564 -11:00 - BST 1983 Nov 30 # B=Bering
565 -11:00 - SST # S=Samoa
567 # Samoa (formerly and also known as Western Samoa)
569 # From Steffen Thorsen (2009-10-16):
570 # We have been in contact with the government of Samoa again, and received
571 # the following info:
573 # "Cabinet has now approved Daylight Saving to be effected next year
574 # commencing from the last Sunday of September 2010 and conclude first
575 # Sunday of April 2011."
578 # http://www.timeanddate.com/news/time/samoa-dst-plan-2009.html
580 # Samoa's Daylight Saving Time Act 2009 is available here, but does not
582 # http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%202009%20%28English%29%20-%20Final%207-7-091.pdf
584 # From Laupue Raymond Hughes (2010-10-07):
586 # http://www.mcil.gov.ws
587 # the Ministry of Commerce, Industry and Labour (sideframe) "Last Sunday
588 # September 2010 (26/09/10) - adjust clocks forward from 12:00 midnight
589 # to 01:00am and First Sunday April 2011 (03/04/11) - adjust clocks
590 # backwards from 1:00am to 12:00am"
592 # From Laupue Raymond Hughes (2011-03-07):
593 # [http://www.mcil.gov.ws/ftcd/daylight_saving_2011.pdf]
595 # ... when the standard time strikes the hour of four o'clock (4.00am
596 # or 0400 Hours) on the 2nd April 2011, then all instruments used to
597 # measure standard time are to be adjusted/changed to three o'clock
598 # (3:00am or 0300Hrs).
600 # From David Zülke (2011-05-09):
601 # Subject: Samoa to move timezone from east to west of international date line
603 # http://www.morningstar.co.uk/uk/markets/newsfeeditem.aspx?id=138501958347963
605 # From Paul Eggert (2014-06-27):
606 # The International Date Line Act 2011
607 # http://www.parliament.gov.ws/images/ACTS/International_Date_Line_Act__2011_-_Eng.pdf
608 # changed Samoa from UTC-11 to UTC+13, effective "12 o'clock midnight, on
609 # Thursday 29th December 2011". The International Date Line was adjusted
612 # From Laupue Raymond Hughes (2011-09-02):
613 # http://www.mcil.gov.ws/mcil_publications.html
615 # here is the official website publication for Samoa DST and dateline change
618 # Year End Time Start Time
619 # 2011 - - - - - - 24 September 3:00am to 4:00am
620 # 2012 01 April 4:00am to 3:00am - - - - - -
622 # Dateline Change skip Friday 30th Dec 2011
623 # Thursday 29th December 2011 23:59:59 Hours
624 # Saturday 31st December 2011 00:00:00 Hours
626 # From Nicholas Pereira (2012-09-10):
627 # Daylight Saving Time commences on Sunday 30th September 2012 and
628 # ends on Sunday 7th of April 2013....
629 # http://www.mcil.gov.ws/mcil_publications.html
631 # From Paul Eggert (2014-07-08):
632 # That web page currently lists transitions for 2012/3 and 2013/4.
633 # Assume the pattern instituted in 2012 will continue indefinitely.
635 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
636 Rule WS 2010 only - Sep lastSun 0:00 1 D
637 Rule WS 2011 only - Apr Sat>=1 4:00 0 S
638 Rule WS 2011 only - Sep lastSat 3:00 1 D
639 Rule WS 2012 max - Apr Sun>=1 4:00 0 S
640 Rule WS 2012 max - Sep lastSun 3:00 1 D
641 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
642 Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5
645 -11:00 WS S%sT 2011 Dec 29 24:00 # S=Samoa
649 # excludes Bougainville, for which see Papua New Guinea
650 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
651 Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara
652 11:00 - SBT # Solomon Is Time
656 # From Gwillim Law (2011-12-29)
657 # A correspondent informed me that Tokelau, like Samoa, will be skipping
658 # December 31 this year ...
660 # From Steffen Thorsen (2012-07-25)
661 # ... we double checked by calling hotels and offices based in Tokelau asking
662 # about the time there, and they all told a time that agrees with UTC+13....
663 # Shanks says UTC-10 from 1901 [but] ... there is a good chance the change
664 # actually was to UTC-11 back then.
666 # From Paul Eggert (2012-07-25)
667 # A Google Books snippet of Appendix to the Journals of the House of
668 # Representatives of New Zealand, Session 1948,
669 # <http://books.google.com/books?id=ZaVCAQAAIAAJ>, page 65, says Tokelau
670 # was "11 hours slow on G.M.T." Go with Thorsen and assume Shanks & Pottenger
671 # are off by an hour starting in 1901.
673 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
674 Zone Pacific/Fakaofo -11:24:56 - LMT 1901
675 -11:00 - TKT 2011 Dec 30 # Tokelau Time
679 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
680 Rule Tonga 1999 only - Oct 7 2:00s 1:00 S
681 Rule Tonga 2000 only - Mar 19 2:00s 0 -
682 Rule Tonga 2000 2001 - Nov Sun>=1 2:00 1:00 S
683 Rule Tonga 2001 2002 - Jan lastSun 2:00 0 -
684 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
685 Zone Pacific/Tongatapu 12:19:20 - LMT 1901
686 12:20 - TOT 1941 # Tonga Time
691 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
692 Zone Pacific/Funafuti 11:56:52 - LMT 1901
693 12:00 - TVT # Tuvalu Time
696 # US minor outlying islands
699 # Howland was mined for guano by American companies 1857-1878 and British
700 # 1886-1891; Baker was similar but exact dates are not known.
701 # Inhabited by civilians 1935-1942; U.S. military bases 1943-1944;
702 # uninhabited thereafter.
703 # Howland observed Hawaii Standard Time (UT-10:30) in 1937;
704 # see page 206 of Elgen M. Long and Marie K. Long,
705 # Amelia Earhart: the Mystery Solved, Simon & Schuster (2000).
706 # So most likely Howland and Baker observed Hawaii Time from 1935
707 # until they were abandoned after the war.
710 # Mined for guano by American companies 1857-1879 and British 1883?-1891?.
711 # Inhabited by civilians 1935-1942; IGY scientific base 1957-1958;
712 # uninhabited thereafter.
713 # no information; was probably like Pacific/Kiritimati
717 # From Paul Eggert (2014-03-11):
718 # Sometimes Johnston kept Hawaii time, and sometimes it was an hour behind.
719 # Details are uncertain. We have no data for Johnston after 1970, so
720 # treat it like Hawaii for now.
722 # In his memoirs of June 6th to October 4, 1945
723 # <http://www.315bw.org/Herb_Bach.htm> (2005), Herbert C. Bach writes,
724 # "We started our letdown to Kwajalein Atoll and landed there at 5:00 AM
725 # Johnston time, 1:30 AM Kwajalein time." This was in June 1945, and
726 # confirms that Johnston kept the same time as Honolulu in summer 1945.
728 # From Lyle McElhaney (2014-03-11):
729 # [W]hen JI was being used for that [atomic bomb] testing, the time being used
730 # was not Hawaiian time but rather the same time being used on the ships,
731 # which had a GMT offset of -11 hours. This apparently applied to at least the
732 # time from Operation Newsreel (Hardtack I/Teak shot, 1958-08-01) to the last
733 # Operation Fishbowl shot (Tightrope, 1962-11-04).... [See] Herman Hoerlin,
734 # "The United States High-Altitude Test Experience: A Review Emphasizing the
735 # Impact on the Environment", Los Alamos LA-6405, Oct 1976.
736 # http://www.fas.org/sgp/othergov/doe/lanl/docs1/00322994.pdf
737 # See the table on page 4 where he lists GMT and local times for the tests; a
738 # footnote for the JI tests reads that local time is "JI time = Hawaii Time
741 # See 'northamerica' for Pacific/Johnston.
748 # From Mark Brader (2005-01-23):
749 # [Fallacies and Fantasies of Air Transport History, by R.E.G. Davies,
750 # published 1994 by Paladwr Press, McLean, VA, USA; ISBN 0-9626483-5-3]
751 # reproduced a Pan American Airways timetable from 1936, for their weekly
752 # "Orient Express" flights between San Francisco and Manila, and connecting
753 # flights to Chicago and the US East Coast. As it uses some time zone
754 # designations that I've never seen before:....
755 # Fri. 6:30A Lv. HONOLOLU (Pearl Harbor), H.I. H.L.T. Ar. 5:30P Sun.
756 # " 3:00P Ar. MIDWAY ISLAND . . . . . . . . . M.L.T. Lv. 6:00A "
758 Zone Pacific/Midway -11:49:28 - LMT 1901
759 -11:00 - NST 1956 Jun 3
760 -11:00 1:00 NDT 1956 Sep 2
761 -11:00 - NST 1967 Apr # N=Nome
762 -11:00 - BST 1983 Nov 30 # B=Bering
763 -11:00 - SST # S=Samoa
766 # uninhabited since World War II; was probably like Pacific/Kiritimati
769 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
770 Zone Pacific/Wake 11:06:28 - LMT 1901
771 12:00 - WAKT # Wake Time
775 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
776 Rule Vanuatu 1983 only - Sep 25 0:00 1:00 S
777 Rule Vanuatu 1984 1991 - Mar Sun>=23 0:00 0 -
778 Rule Vanuatu 1984 only - Oct 23 0:00 1:00 S
779 Rule Vanuatu 1985 1991 - Sep Sun>=23 0:00 1:00 S
780 Rule Vanuatu 1992 1993 - Jan Sun>=23 0:00 0 -
781 Rule Vanuatu 1992 only - Oct Sun>=23 0:00 1:00 S
782 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
783 Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
784 11:00 Vanuatu VU%sT # Vanuatu Time
787 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
788 Zone Pacific/Wallis 12:15:20 - LMT 1901
789 12:00 - WFT # Wallis & Futuna Time
791 ###############################################################################
795 # This file is by no means authoritative; if you think you know better,
796 # go ahead and edit the file (and please send any changes to
797 # tz@iana.org for general use in the future). For more, please see
798 # the file CONTRIBUTING in the tz distribution.
800 # From Paul Eggert (2014-10-31):
802 # Unless otherwise specified, the source for data through 1990 is:
803 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
804 # San Diego: ACS Publications, Inc. (2003).
805 # Unfortunately this book contains many errors and cites no sources.
807 # Gwillim Law writes that a good source
808 # for recent time zone data is the International Air Transport
809 # Association's Standard Schedules Information Manual (IATA SSIM),
810 # published semiannually. Law sent in several helpful summaries
811 # of the IATA's data after 1990. Except where otherwise noted,
812 # IATA SSIM is the source for entries after 1990.
814 # Another source occasionally used is Edward W. Whitman, World Time Differences,
815 # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
816 # I found in the UCLA library.
818 # For data circa 1899, a common source is:
819 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
820 # http://www.jstor.org/stable/1774359
822 # A reliable and entertaining source about time zones is
823 # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
825 # I invented the abbreviations marked '*' in the following table;
826 # the rest are from earlier versions of this file, or from other sources.
827 # Corrections are welcome!
829 # LMT Local Mean Time
830 # 8:00 AWST AWDT Western Australia
831 # 8:45 ACWST ACWDT Central Western Australia*
833 # 9:30 ACST ACDT Central Australia
834 # 10:00 AEST AEDT Eastern Australia
835 # 10:00 ChST Chamorro
836 # 10:30 LHST LHDT Lord Howe*
837 # 11:00 BST Bougainville*
838 # 11:30 NZMT NZST New Zealand through 1945
839 # 12:00 NZST NZDT New Zealand 1946-present
840 # 12:15 CHAST Chatham through 1945*
841 # 12:45 CHAST CHADT Chatham 1946-present*
842 # 13:00 WSST WSDT (western) Samoa 2011-present*
843 # -11:30 WSST Western Samoa through 1950*
846 # - 8:00 PST Pitcairn*
848 # See the 'northamerica' file for Hawaii.
849 # See the 'southamerica' file for Easter I and the Galápagos Is.
851 ###############################################################################
855 # From Paul Eggert (2014-06-30):
856 # Daylight saving time has long been controversial in Australia, pitting
857 # region against region, rural against urban, and local against global.
858 # For example, in her review of Graeme Davison's _The Unforgiving
859 # Minute: how Australians learned to tell the time_ (1993), Perth native
860 # Phillipa J Martyr wrote, "The section entitled 'Saving Daylight' was
861 # very informative, but was (as can, sadly, only be expected from a
862 # Melbourne-based study) replete with the usual chuckleheaded
863 # Queenslanders and straw-chewing yokels from the West prattling fables
864 # about fading curtains and crazed farm animals."
865 # Electronic Journal of Australian and New Zealand History (1997-03-03)
866 # http://www.jcu.edu.au/aff/history/reviews/davison.htm
868 # From Paul Eggert (2005-12-08):
869 # Implementation Dates of Daylight Saving Time within Australia
870 # http://www.bom.gov.au/climate/averages/tables/dst_times.shtml
871 # summarizes daylight saving issues in Australia.
873 # From Arthur David Olson (2005-12-12):
874 # Lawlink NSW:Daylight Saving in New South Wales
875 # http://www.lawlink.nsw.gov.au/lawlink/Corporate/ll_agdinfo.nsf/pages/community_relations_daylight_saving
876 # covers New South Wales in particular.
878 # From John Mackin (1991-03-06):
879 # We in Australia have _never_ referred to DST as 'daylight' time.
880 # It is called 'summer' time. Now by a happy coincidence, 'summer'
881 # and 'standard' happen to start with the same letter; hence, the
882 # abbreviation does _not_ change...
883 # The legislation does not actually define abbreviations, at least
884 # in this State, but the abbreviation is just commonly taken to be the
885 # initials of the phrase, and the legislation here uniformly uses
886 # the phrase 'summer time' and does not use the phrase 'daylight
888 # Announcers on the Commonwealth radio network, the ABC (for Australian
889 # Broadcasting Commission), use the phrases 'Eastern Standard Time'
890 # or 'Eastern Summer Time'. (Note, though, that as I say in the
891 # current australasia file, there is really no such thing.) Announcers
892 # on its overseas service, Radio Australia, use the same phrases
893 # prefixed by the word 'Australian' when referring to local times;
894 # time announcements on that service, naturally enough, are made in UTC.
896 # From Paul Eggert (2014-06-30):
898 # Inspired by Mackin's remarks quoted above, earlier versions of this
899 # file used "EST" for both Eastern Standard Time and Eastern Summer
900 # Time in Australia, and similarly for "CST", "CWST", and "WST".
901 # However, these abbreviations were confusing and were not common
902 # practice among Australians, and there were justifiable complaints
903 # about them, so I attempted to survey current Australian usage.
904 # For the tz database, the full English phrase is not that important;
905 # what matters is the abbreviation. It's difficult to survey the web
906 # directly for abbreviation usage, as there are so many false hits for
907 # strings like "EST" and "EDT", so I looked for pages that defined an
908 # abbreviation for eastern or central DST in Australia, and got the
909 # following numbers of unique hits for the listed Google queries:
911 # 10 "Eastern Daylight Time AEST" site:au [some are false hits]
912 # 10 "Eastern Summer Time AEST" site:au
913 # 10 "Summer Time AEDT" site:au
914 # 13 "EDST Eastern Daylight Saving Time" site:au
915 # 18 "Summer Time ESST" site:au
916 # 28 "Eastern Daylight Saving Time EDST" site:au
917 # 39 "EDT Eastern Daylight Time" site:au [some are false hits]
918 # 53 "Eastern Daylight Time EDT" site:au [some are false hits]
919 # 54 "AEDT Australian Eastern Daylight Time" site:au
920 # 182 "Eastern Daylight Time AEDT" site:au
922 # 17 "Central Daylight Time CDT" site:au [some are false hits]
923 # 46 "Central Daylight Time ACDT" site:au
925 # I tried several other variants (e.g., "Eastern Summer Time EST") but
926 # they all returned fewer than 10 unique hits. I also looked for pages
927 # mentioning both "western standard time" and an abbreviation, since
928 # there is no WST in the US to generate false hits, and found:
930 # 156 "western standard time" AWST site:au
931 # 226 "western standard time" WST site:au
933 # I then surveyed the top ten newspapers in Australia by circulation as
934 # listed in Wikipedia, using Google queries like "AEDT site:heraldsun.com.au"
935 # and obtaining estimated counts from the initial page of search results.
936 # All ten papers greatly preferred "AEDT" to "EDT". The papers
937 # surveyed were the Herald Sun, The Daily Telegraph, The Courier-Mail,
938 # The Sydney Morning Herald, The West Australian, The Age, The Advertiser,
939 # The Australian, The Financial Review, and The Herald (Newcastle).
941 # I also searched for historical usage, to see whether abbreviations
942 # like "AEDT" are new. A Trove search <http://trove.nla.gov.au/>
943 # found only one newspaper (The Canberra Times) with a house style
944 # dating back to the 1970s, I expect because other newspapers weren't
945 # fully indexed. The Canberra Times strongly preferred abbreviations
946 # like "AEDT". The first occurrence of "AEDT" was a World Weather
947 # column (1971-11-17, page 24), and of "ACDT" was a Scoreboard column
948 # (1993-01-24, p 16). The style was the typical usage but was not
949 # strictly enforced; for example, "Welcome to the twilight zones ..."
950 # (1994-10-29, p 1) uses the abbreviations AEST/AEDT, CST/CDT, and
951 # WST, and goes on to say, "The confusion and frustration some feel
952 # about the lack of uniformity among Australia's six states and two
953 # territories has prompted one group to form its very own political
954 # party -- the Sydney-based Daylight Saving Extension Party."
956 # I also surveyed federal government sources. They did not agree:
958 # The Australian Government (2014-03-26)
959 # http://australia.gov.au/about-australia/our-country/time
960 # (This document was produced by the Department of Finance.)
961 # AEST ACST AWST AEDT ACDT
963 # Bureau of Meteorology (2012-11-08)
964 # http://www.bom.gov.au/climate/averages/tables/daysavtm.shtml
965 # EST CST WST EDT CDT
967 # Civil Aviation Safety Authority (undated)
968 # http://services.casa.gov.au/outnback/inc/pages/episode3/episode-3_time_zones.shtml
969 # EST CST WST (no abbreviations given for DST)
971 # Geoscience Australia (2011-11-24)
972 # http://www.ga.gov.au/geodesy/astro/sunrise.jsp
973 # AEST ACST AWST AEDT ACDT
975 # Parliamentary Library (2008-11-10)
976 # http://www.aph.gov.au/binaries/library/pubs/rp/2008-09/09rp14.pdf
977 # EST CST WST preferred for standard time; AEST AEDT ACST ACDT also used
979 # The Transport Safety Bureau has an extensive series of accident reports,
980 # and investigators seem to use whatever abbreviation they like.
981 # Googling site:atsb.gov.au found the following number of unique hits:
982 # 311 "ESuT", 195 "EDT", 26 "AEDT", 83 "CSuT", 46 "CDT".
983 # "_SuT" tended to appear in older reports, and "A_DT" tended to
984 # appear in reports of events with international implications.
986 # From the above it appears that there is a working consensus in
987 # Australia to use trailing "DT" for daylight saving time; although
988 # some sources use trailing "SST" or "ST" or "SuT" they are by far in
989 # the minority. The case for leading "A" is weaker, but since it
990 # seems to be preferred in the overall web and is preferred in all
991 # the leading newspaper websites and in many government departments,
992 # it has a stronger case than omitting the leading "A". The current
993 # version of the database therefore uses abbreviations like "AEST" and
994 # "AEDT" for Australian time zones.
996 # From Paul Eggert (1995-12-19):
997 # Shanks & Pottenger report 2:00 for all autumn changes in Australia and NZ.
998 # Mark Prior writes that his newspaper
999 # reports that NSW's fall 1995 change will occur at 2:00,
1000 # but Robert Elz says it's been 3:00 in Victoria since 1970
1001 # and perhaps the newspaper's '2:00' is referring to standard time.
1002 # For now we'll continue to assume 2:00s for changes since 1960.
1004 # From Eric Ulevik (1998-01-05):
1006 # Here are some URLs to Australian time legislation. These URLs are stable,
1007 # and should probably be included in the data file. There are probably more
1008 # relevant entries in this database.
1010 # NSW (including LHI and Broken Hill):
1011 # Standard Time Act 1987 (updated 1995-04-04)
1012 # http://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html
1014 # Standard Time and Summer Time Act 1972
1015 # http://www.austlii.edu.au/au/legis/act/consol_act/stasta1972279/index.html
1017 # Standard Time Act, 1898
1018 # http://www.austlii.edu.au/au/legis/sa/consol_act/sta1898137/index.html
1020 # From David Grosz (2005-06-13):
1021 # It was announced last week that Daylight Saving would be extended by
1022 # one week next year to allow for the 2006 Commonwealth Games.
1023 # Daylight Saving is now to end for next year only on the first Sunday
1024 # in April instead of the last Sunday in March.
1026 # From Gwillim Law (2005-06-14):
1027 # I did some Googling and found that all of those states (and territory) plan
1028 # to extend DST together in 2006.
1029 # ACT: http://www.cmd.act.gov.au/mediareleases/fileread.cfm?file=86.txt
1030 # New South Wales: http://www.thecouriermail.news.com.au/common/story_page/0,5936,15538869%255E1702,00.html
1031 # South Australia: http://www.news.com.au/story/0,10117,15555031-1246,00.html
1032 # Tasmania: http://www.media.tas.gov.au/release.php?id=14772
1033 # Victoria: I wasn't able to find anything separate, but the other articles
1035 # But not Queensland
1036 # http://www.news.com.au/story/0,10117,15564030-1248,00.html
1038 # Northern Territory
1040 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
1041 # # The NORTHERN TERRITORY.. [ Courtesy N.T. Dept of the Chief Minister ]
1043 # # N.T. have never utilised any DST due to sub-tropical/tropical location.
1045 # Zone Australia/North 9:30 - CST
1047 # From Bradley White (1991-03-04):
1048 # A recent excerpt from an Australian newspaper...
1049 # the Northern Territory do[es] not have daylight saving.
1053 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
1054 # # The state of WESTERN AUSTRALIA.. [ Courtesy W.A. dept Premier+Cabinet ]
1056 # # W.A. suffers from a great deal of public and political opposition to
1057 # # DST in principle. A bill is brought before parliament in most years, but
1058 # # usually defeated either in the upper house, or in party caucus
1059 # # before reaching parliament.
1061 # Zone Australia/West 8:00 AW %sST
1063 # Rule AW 1974 only - Oct lastSun 2:00 1:00 D
1064 # Rule AW 1975 only - Mar Sun>=1 3:00 0 W
1065 # Rule AW 1983 only - Oct lastSun 2:00 1:00 D
1066 # Rule AW 1984 only - Mar Sun>=1 3:00 0 W
1068 # From Bradley White (1991-03-04):
1069 # A recent excerpt from an Australian newspaper...
1070 # Western Australia...do[es] not have daylight saving.
1072 # From John D. Newman via Bradley White (1991-11-02):
1073 # Western Australia is still on "winter time". Some DH in Sydney
1074 # rang me at home a few days ago at 6.00am. (He had just arrived at
1076 # W.A. is switching to Summer Time on Nov 17th just to confuse
1079 # From Arthur David Olson (1992-03-08):
1080 # The 1992 ending date used in the rules is a best guess;
1081 # it matches what was used in the past.
1083 # The Australian Bureau of Meteorology FAQ
1084 # http://www.bom.gov.au/faq/faqgen.htm
1085 # (1999-09-27) writes that Giles Meteorological Station uses
1086 # South Australian time even though it's located in Western Australia.
1089 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
1090 # # The state of QUEENSLAND.. [ Courtesy Qld. Dept Premier Econ&Trade Devel ]
1093 # Zone Australia/Queensland 10:00 AQ %sST
1095 # Rule AQ 1971 only - Oct lastSun 2:00 1:00 D
1096 # Rule AQ 1972 only - Feb lastSun 3:00 0 E
1097 # Rule AQ 1989 max - Oct lastSun 2:00 1:00 D
1098 # Rule AQ 1990 max - Mar Sun>=1 3:00 0 E
1100 # From Bradley White (1989-12-24):
1101 # "Australia/Queensland" now observes daylight time (i.e. from
1104 # From Bradley White (1991-03-04):
1105 # A recent excerpt from an Australian newspaper...
1106 # ...Queensland...[has] agreed to end daylight saving
1107 # at 3am tomorrow (March 3)...
1109 # From John Mackin (1991-03-06):
1110 # I can certainly confirm for my part that Daylight Saving in NSW did in fact
1111 # end on Sunday, 3 March. I don't know at what hour, though. (It surprised
1114 # From Bradley White (1992-03-08):
1115 # ...there was recently a referendum in Queensland which resulted
1116 # in the experimental daylight saving system being abandoned. So, ...
1118 # Rule QLD 1989 1991 - Oct lastSun 2:00 1:00 D
1119 # Rule QLD 1990 1992 - Mar Sun>=1 3:00 0 S
1122 # From Arthur David Olson (1992-03-08):
1123 # The chosen rules the union of the 1971/1972 change and the 1989-1992 changes.
1125 # From Christopher Hunt (2006-11-21), after an advance warning
1126 # from Jesper Nørgaard Welen (2006-11-01):
1127 # WA are trialing DST for three years.
1128 # http://www.parliament.wa.gov.au/parliament/bills.nsf/9A1B183144403DA54825721200088DF1/$File/Bill175-1B.pdf
1130 # From Rives McDow (2002-04-09):
1131 # The most interesting region I have found consists of three towns on the
1132 # southern coast.... South Australia observes daylight saving time; Western
1133 # Australia does not. The two states are one and a half hours apart. The
1134 # residents decided to forget about this nonsense of changing the clock so
1135 # much and set the local time 20 hours and 45 minutes from the
1136 # international date line, or right in the middle of the time of South
1137 # Australia and Western Australia....
1139 # From Paul Eggert (2002-04-09):
1140 # This is confirmed by the section entitled
1141 # "What's the deal with time zones???" in
1142 # http://www.earthsci.unimelb.edu.au/~awatkins/null.html
1144 # From Alex Livingston (2006-12-07):
1145 # ... it was just on four years ago that I drove along the Eyre Highway,
1146 # which passes through eastern Western Australia close to the southern
1147 # coast of the continent.
1149 # I paid particular attention to the time kept there. There can be no
1150 # dispute that UTC+08:45 was considered "the time" from the border
1151 # village just inside the border with South Australia to as far west
1152 # as just east of Caiguna. There can also be no dispute that Eucla is
1153 # the largest population centre in this zone....
1155 # Now that Western Australia is observing daylight saving, the
1156 # question arose whether this part of the state would follow suit. I
1157 # just called the border village and confirmed that indeed they have,
1158 # meaning that they are now observing UTC+09:45.
1161 # I personally doubt that either experimentation with daylight saving
1162 # in WA or its introduction in SA had anything to do with the genesis
1163 # of this time zone. My hunch is that it's been around since well
1164 # before 1975. I remember seeing it noted on road maps decades ago.
1166 # From Paul Eggert (2006-12-15):
1167 # For lack of better info, assume the tradition dates back to the
1168 # introduction of standard time in 1895.
1171 # southeast Australia
1173 # From Paul Eggert (2007-07-23):
1174 # Starting autumn 2008 Victoria, NSW, South Australia, Tasmania and the ACT
1175 # end DST the first Sunday in April and start DST the first Sunday in October.
1176 # http://www.theage.com.au/news/national/daylight-savings-to-span-six-months/2007/06/27/1182623966703.html
1181 # From Bradley White (1991-03-04):
1182 # A recent excerpt from an Australian newspaper...
1183 # ...South Australia...[has] agreed to end daylight saving
1184 # at 3am tomorrow (March 3)...
1186 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
1187 # # The state of SOUTH AUSTRALIA....[ Courtesy of S.A. Dept of Labour ]
1190 # Zone Australia/South 9:30 AS %sST
1192 # Rule AS 1971 max - Oct lastSun 2:00 1:00 D
1193 # Rule AS 1972 1985 - Mar Sun>=1 3:00 0 C
1194 # Rule AS 1986 1990 - Mar Sun>=15 3:00 0 C
1195 # Rule AS 1991 max - Mar Sun>=1 3:00 0 C
1197 # From Bradley White (1992-03-11):
1198 # Recent correspondence with a friend in Adelaide
1199 # contained the following exchange: "Due to the Adelaide Festival,
1200 # South Australia delays setting back our clocks for a few weeks."
1202 # From Robert Elz (1992-03-13):
1203 # I heard that apparently (or at least, it appears that)
1204 # South Aus will have an extra 3 weeks daylight saving every even
1205 # numbered year (from 1990). That's when the Adelaide Festival
1208 # From Robert Elz (1992-03-16, 00:57:07 +1000):
1209 # DST didn't end in Adelaide today (yesterday)....
1210 # But whether it's "4th Sunday" or "2nd last Sunday" I have no idea whatever...
1211 # (it's just as likely to be "the Sunday we pick for this year"...).
1213 # From Bradley White (1994-04-11):
1214 # If Sun, 15 March, 1992 was at +1030 as kre asserts, but yet Sun, 20 March,
1215 # 1994 was at +0930 as John Connolly's customer seems to assert, then I can
1216 # only conclude that the actual rule is more complicated....
1218 # From John Warburton (1994-10-07):
1219 # The new Daylight Savings dates for South Australia ...
1220 # was gazetted in the Government Hansard on Sep 26 1994....
1221 # start on last Sunday in October and end in last sunday in March.
1223 # From Paul Eggert (2007-07-23):
1224 # See "southeast Australia" above for 2008 and later.
1228 # The rules for 1967 through 1991 were reported by George Shepherd
1229 # via Simon Woodhead via Robert Elz (1991-03-06):
1230 # # The state of TASMANIA.. [Courtesy Tasmanian Dept of Premier + Cabinet ]
1233 # From Bill Hart via Guy Harris (1991-10-10):
1234 # Oh yes, the new daylight savings rules are uniquely tasmanian, we have
1235 # 6 weeks a year now when we are out of sync with the rest of Australia
1236 # (but nothing new about that).
1238 # From Alex Livingston (1999-10-04):
1239 # I heard on the ABC (Australian Broadcasting Corporation) radio news on the
1240 # (long) weekend that Tasmania, which usually goes its own way in this regard,
1241 # has decided to join with most of NSW, the ACT, and most of Victoria
1242 # (Australia) and start daylight saving on the last Sunday in August in 2000
1243 # instead of the first Sunday in October.
1245 # Sim Alam (2000-07-03) reported a legal citation for the 2000/2001 rules:
1246 # http://www.thelaw.tas.gov.au/fragview/42++1968+GS3A@EN+2000070300
1248 # From Paul Eggert (2007-07-23):
1249 # See "southeast Australia" above for 2008 and later.
1253 # The rules for 1971 through 1991 were reported by George Shepherd
1254 # via Simon Woodhead via Robert Elz (1991-03-06):
1255 # # The state of VICTORIA.. [ Courtesy of Vic. Dept of Premier + Cabinet ]
1258 # From Scott Harrington (2001-08-29):
1259 # On KQED's "City Arts and Lectures" program last night I heard an
1260 # interesting story about daylight savings time. Dr. John Heilbron was
1261 # discussing his book "The Sun in the Church: Cathedrals as Solar
1262 # Observatories"[1], and in particular the Shrine of Remembrance[2] located
1263 # in Melbourne, Australia.
1265 # Apparently the shrine's main purpose is a beam of sunlight which
1266 # illuminates a special spot on the floor at the 11th hour of the 11th day
1267 # of the 11th month (Remembrance Day) every year in memory of Australia's
1268 # fallen WWI soldiers. And if you go there on Nov. 11, at 11am local time,
1269 # you will indeed see the sunbeam illuminate the special spot at the
1272 # However, that is only because of some special mirror contraption that had
1273 # to be employed, since due to daylight savings time, the true solar time of
1274 # the remembrance moment occurs one hour later (or earlier?). Perhaps
1275 # someone with more information on this jury-rig can tell us more.
1277 # [1] http://www.hup.harvard.edu/catalog/HEISUN.html
1278 # [2] http://www.shrine.org.au
1280 # From Paul Eggert (2007-07-23):
1281 # See "southeast Australia" above for 2008 and later.
1285 # From Arthur David Olson:
1286 # New South Wales and subjurisdictions have their own ideas of a fun time.
1287 # Based on law library research by John Mackin,
1289 # In Australia, time is not legislated federally, but rather by the
1290 # individual states. Thus, while such terms as "Eastern Standard Time"
1291 # [I mean, of course, Australian EST, not any other kind] are in common
1292 # use, _they have NO REAL MEANING_, as they are not defined in the
1293 # legislation. This is very important to understand.
1294 # I have researched New South Wales time only...
1296 # From Eric Ulevik (1999-05-26):
1297 # DST will start in NSW on the last Sunday of August, rather than the usual
1298 # October in 2000. See: Matthew Moore,
1299 # Two months more daylight saving, Sydney Morning Herald (1999-05-26).
1300 # http://www.smh.com.au/news/9905/26/pageone/pageone4.html
1302 # From Paul Eggert (1999-09-27):
1303 # See the following official NSW source:
1304 # Daylight Saving in New South Wales.
1305 # http://dir.gis.nsw.gov.au/cgi-bin/genobject/document/other/daylightsaving/tigGmZ
1307 # Narrabri Shire (NSW) council has announced it will ignore the extension of
1308 # daylight saving next year. See:
1309 # Narrabri Council to ignore daylight saving
1310 # http://abc.net.au/news/regionals/neweng/monthly/regeng-22jul1999-1.htm
1311 # (1999-07-22). For now, we'll wait to see if this really happens.
1313 # Victoria will following NSW. See:
1314 # Vic to extend daylight saving (1999-07-28)
1315 # http://abc.net.au/local/news/olympics/1999/07/item19990728112314_1.htm
1317 # However, South Australia rejected the DST request. See:
1318 # South Australia rejects Olympics daylight savings request (1999-07-19)
1319 # http://abc.net.au/news/olympics/1999/07/item19990719151754_1.htm
1321 # Queensland also will not observe DST for the Olympics. See:
1322 # Qld says no to daylight savings for Olympics
1323 # http://abc.net.au/news/olympics/1999/06/item19990601114608_1.htm
1324 # (1999-06-01), which quotes Queensland Premier Peter Beattie as saying
1325 # "Look you've got to remember in my family when this came up last time
1326 # I voted for it, my wife voted against it and she said to me it's all very
1327 # well for you, you don't have to worry about getting the children out of
1328 # bed, getting them to school, getting them to sleep at night.
1329 # I've been through all this argument domestically...my wife rules."
1331 # Broken Hill will stick with South Australian time in 2000. See:
1332 # Broken Hill to be behind the times (1999-07-21)
1333 # http://abc.net.au/news/regionals/brokenh/monthly/regbrok-21jul1999-6.htm
1335 # IATA SSIM (1998-09) says that the spring 2000 change for Australian
1336 # Capital Territory, New South Wales except Lord Howe Island and Broken
1337 # Hill, and Victoria will be August 27, presumably due to the Sydney Olympics.
1339 # From Eric Ulevik, referring to Sydney's Sun Herald (2000-08-13), page 29:
1340 # The Queensland Premier Peter Beattie is encouraging northern NSW
1341 # towns to use Queensland time.
1343 # From Paul Eggert (2007-07-23):
1344 # See "southeast Australia" above for 2008 and later.
1348 # From John Mackin (1989-01-04):
1349 # 'Broken Hill' means the County of Yancowinna.
1351 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
1352 # # YANCOWINNA.. [ Confirmation courtesy of Broken Hill Postmaster ]
1355 # # Yancowinna uses Central Standard Time, despite [its] location on the
1356 # # New South Wales side of the S.A. border. Most business and social dealings
1357 # # are with CST zones, therefore CST is legislated by local government
1358 # # although the switch to Summer Time occurs in line with N.S.W. There have
1359 # # been years when this did not apply, but the historical data is not
1360 # # presently available.
1361 # Zone Australia/Yancowinna 9:30 AY %sST
1363 # Rule AY 1971 1985 - Oct lastSun 2:00 1:00 D
1364 # Rule AY 1972 only - Feb lastSun 3:00 0 C
1365 # [followed by other Rules]
1369 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
1370 # LHI... [ Courtesy of Pauline Van Winsen ]
1372 # Lord Howe Island is located off the New South Wales coast, and is half an
1373 # hour ahead of NSW time.
1375 # From James Lonergan, Secretary, Lord Howe Island Board (2000-01-27):
1376 # Lord Howe Island summer time in 2000/2001 will commence on the same
1377 # date as the rest of NSW (i.e. 2000-08-27). For your information the
1378 # Lord Howe Island Board (controlling authority for the Island) is
1379 # seeking the community's views on various options for summer time
1380 # arrangements on the Island, e.g. advance clocks by 1 full hour
1381 # instead of only 30 minutes. [Dependent] on the wishes of residents
1382 # the Board may approach the NSW government to change the existing
1383 # arrangements. The starting date for summer time on the Island will
1384 # however always coincide with the rest of NSW.
1386 # From James Lonergan, Secretary, Lord Howe Island Board (2000-10-25):
1387 # Lord Howe Island advances clocks by 30 minutes during DST in NSW and retards
1388 # clocks by 30 minutes when DST finishes. Since DST was most recently
1389 # introduced in NSW, the "changeover" time on the Island has been 02:00 as
1390 # shown on clocks on LHI. I guess this means that for 30 minutes at the start
1391 # of DST, LHI is actually 1 hour ahead of the rest of NSW.
1393 # From Paul Eggert (2006-03-22):
1394 # For Lord Howe dates we use Shanks & Pottenger through 1989, and
1395 # Lonergan thereafter. For times we use Lonergan.
1397 # From Paul Eggert (2007-07-23):
1398 # See "southeast Australia" above for 2008 and later.
1400 # From Steffen Thorsen (2009-04-28):
1401 # According to the official press release, South Australia's extended daylight
1402 # saving period will continue with the same rules as used during the 2008-2009
1403 # summer (southern hemisphere).
1406 # http://www.safework.sa.gov.au/uploaded_files/DaylightDatesSet.pdf
1407 # The extended daylight saving period that South Australia has been trialling
1408 # for over the last year is now set to be ongoing.
1409 # Daylight saving will continue to start on the first Sunday in October each
1410 # year and finish on the first Sunday in April the following year.
1411 # Industrial Relations Minister, Paul Caica, says this provides South Australia
1412 # with a consistent half hour time difference with NSW, Victoria, Tasmania and
1413 # the ACT for all 52 weeks of the year...
1415 # We have a wrap-up here:
1416 # http://www.timeanddate.com/news/time/south-australia-extends-dst.html
1417 ###############################################################################
1421 # From Mark Davies (1990-10-03):
1422 # the 1989/90 year was a trial of an extended "daylight saving" period.
1423 # This trial was deemed successful and the extended period adopted for
1424 # subsequent years (with the addition of a further week at the start).
1425 # source - phone call to Ministry of Internal Affairs Head Office.
1427 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
1428 # # The Country of New Zealand (Australia's east island -) Gee they hate that!
1429 # # or is Australia the west island of N.Z.
1430 # # [ courtesy of Geoff Tribble.. Auckland N.Z. ]
1433 # Rule NZ 1974 1988 - Oct lastSun 2:00 1:00 D
1434 # Rule NZ 1989 max - Oct Sun>=1 2:00 1:00 D
1435 # Rule NZ 1975 1989 - Mar Sun>=1 3:00 0 S
1436 # Rule NZ 1990 max - Mar lastSun 3:00 0 S
1438 # Zone NZ 12:00 NZ NZ%sT # New Zealand
1439 # Zone NZ-CHAT 12:45 - NZ-CHAT # Chatham Island
1441 # From Arthur David Olson (1992-03-08):
1442 # The chosen rules use the Davies October 8 values for the start of DST in 1989
1443 # rather than the October 1 value.
1445 # From Paul Eggert (1995-12-19);
1446 # Shank & Pottenger report 2:00 for all autumn changes in Australia and NZ.
1447 # Robert Uzgalis writes that the New Zealand Daylight
1448 # Savings Time Order in Council dated 1990-06-18 specifies 2:00 standard
1449 # time on both the first Sunday in October and the third Sunday in March.
1450 # As with Australia, we'll assume the tradition is 2:00s, not 2:00.
1452 # From Paul Eggert (2006-03-22):
1453 # The Department of Internal Affairs (DIA) maintains a brief history,
1454 # as does Carol Squires; see tz-link.htm for the full references.
1455 # Use these sources in preference to Shanks & Pottenger.
1457 # For Chatham, IATA SSIM (1991/1999) gives the NZ rules but with
1458 # transitions at 2:45 local standard time; this confirms that Chatham
1459 # is always exactly 45 minutes ahead of Auckland.
1461 # From Colin Sharples (2007-04-30):
1462 # DST will now start on the last Sunday in September, and end on the
1463 # first Sunday in April. The changes take effect this year, meaning
1464 # that DST will begin on 2007-09-30 2008-04-06.
1465 # http://www.dia.govt.nz/diawebsite.nsf/wpg_URL/Services-Daylight-Saving-Daylight-saving-to-be-extended
1467 # From Paul Eggert (2014-07-14):
1468 # Chatham Island time was formally standardized on 1957-01-01 by
1469 # New Zealand's Standard Time Amendment Act 1956 (1956-10-26).
1470 # http://www.austlii.edu.au/nz/legis/hist_act/staa19561956n100244.pdf
1471 # According to Google Books snippet view, a speaker in the New Zealand
1472 # parliamentary debates in 1956 said "Clause 78 makes provision for standard
1473 # time in the Chatham Islands. The time there is 45 minutes in advance of New
1474 # Zealand time. I understand that is the time they keep locally, anyhow."
1475 # For now, assume this practice goes back to the introduction of standard time
1476 # in New Zealand, as this would make Chatham Islands time almost exactly match
1477 # LMT back when New Zealand was at UTC+11:30; also, assume Chatham Islands did
1478 # not observe New Zealand's prewar DST.
1480 ###############################################################################
1485 # Howse writes (p 153) that in 1879 the British governor of Fiji
1486 # enacted an ordinance standardizing the islands on Antipodean Time
1487 # instead of the American system (which was one day behind).
1489 # From Rives McDow (1998-10-08):
1490 # Fiji will introduce DST effective 0200 local time, 1998-11-01
1491 # until 0300 local time 1999-02-28. Each year the DST period will
1492 # be from the first Sunday in November until the last Sunday in February.
1494 # From Paul Eggert (2000-01-08):
1495 # IATA SSIM (1999-09) says DST ends 0100 local time. Go with McDow.
1497 # From the BBC World Service in
1498 # http://news.bbc.co.uk/2/hi/asia-pacific/205226.stm (1998-10-31 16:03 UTC):
1499 # The Fijian government says the main reasons for the time change is to
1500 # improve productivity and reduce road accidents.... [T]he move is also
1501 # intended to boost Fiji's ability to attract tourists to witness the dawning
1502 # of the new millennium.
1504 # http://www.fiji.gov.fj/press/2000_09/2000_09_13-05.shtml (2000-09-13)
1505 # reports that Fiji has discontinued DST.
1510 # From Paul Eggert (1996-01-22):
1511 # Today's _Wall Street Journal_ (page 1) reports that Kiribati
1512 # "declared it the same day [throughout] the country as of Jan. 1, 1995"
1513 # as part of the competition to be first into the 21st century.
1518 # In comp.risks 14.87 (26 August 1993), Peter Neumann writes:
1519 # I wonder what happened in Kwajalein, where there was NO Friday,
1520 # 1993-08-20. Thursday night at midnight Kwajalein switched sides with
1521 # respect to the International Date Line, to rejoin its fellow islands,
1522 # going from 11:59 p.m. Thursday to 12:00 m. Saturday in a blink.
1525 # N Mariana Is, Guam
1527 # Howse writes (p 153) "The Spaniards, on the other hand, reached the
1528 # Philippines and the Ladrones from America," and implies that the Ladrones
1529 # (now called the Marianas) kept American date for quite some time.
1530 # For now, we assume the Ladrones switched at the same time as the Philippines;
1533 # US Public Law 106-564 (2000-12-23) made UTC+10 the official standard time,
1534 # under the name "Chamorro Standard Time". There is no official abbreviation,
1535 # but Congressman Robert A. Underwood, author of the bill that became law,
1536 # wrote in a press release (2000-12-27) that he will seek the use of "ChST".
1541 # Alan Eugene Davis writes (1996-03-16),
1542 # "I am certain, having lived there for the past decade, that 'Truk'
1543 # (now properly known as Chuuk) ... is in the time zone GMT+10."
1545 # Shanks & Pottenger write that Truk switched from UTC+10 to UTC+11
1546 # on 1978-10-01; ignore this for now.
1548 # From Paul Eggert (1999-10-29):
1549 # The Federated States of Micronesia Visitors Board writes in
1550 # The Federated States of Micronesia - Visitor Information (1999-01-26)
1551 # http://www.fsmgov.org/info/clocks.html
1552 # that Truk and Yap are UTC+10, and Ponape and Kosrae are UTC+11.
1553 # We don't know when Kosrae switched from UTC+12; assume January 1 for now.
1558 # From Charles T O'Connor, KMTH DJ (1956),
1559 # quoted in the KTMH section of the Radio Heritage Collection
1560 # <http://radiodx.com/spdxr/KMTH.htm> (2002-12-31):
1561 # For the past two months we've been on what is known as Daylight
1562 # Saving Time. This time has put us on air at 5am in the morning,
1563 # your time down there in New Zealand. Starting September 2, 1956
1564 # we'll again go back to Standard Time. This'll mean that we'll go to
1565 # air at 6am your time.
1567 # From Paul Eggert (2003-03-23):
1568 # We don't know the date of that quote, but we'll guess they
1569 # started DST on June 3. Possibly DST was observed other years
1570 # in Midway, but we have no record of it.
1575 # From Rives McDow (1999-11-08):
1576 # A Proclamation was signed by the Governor of Pitcairn on the 27th March 1998
1577 # with regard to Pitcairn Standard Time. The Proclamation is as follows.
1579 # The local time for general purposes in the Islands shall be
1580 # Co-ordinated Universal time minus 8 hours and shall be known
1581 # as Pitcairn Standard Time.
1583 # ... I have also seen Pitcairn listed as UTC minus 9 hours in several
1584 # references, and can only assume that this was an error in interpretation
1585 # somehow in light of this proclamation.
1587 # From Rives McDow (1999-11-09):
1588 # The Proclamation regarding Pitcairn time came into effect on 27 April 1998
1591 # From Howie Phelps (1999-11-10), who talked to a Pitcairner via shortwave:
1592 # Betty Christian told me yesterday that their local time is the same as
1593 # Pacific Standard Time. They used to be 1/2 hour different from us here in
1594 # Sacramento but it was changed a couple of years ago.
1597 # (Western) Samoa and American Samoa
1599 # Howse writes (p 153, citing p 10 of the 1883-11-18 New York Herald)
1600 # that in 1879 the King of Samoa decided to change
1601 # "the date in his kingdom from the Antipodean to the American system,
1602 # ordaining - by a masterpiece of diplomatic flattery - that
1603 # the Fourth of July should be celebrated twice in that year."
1605 # Although Shanks & Pottenger says they both switched to UTC-11:30
1606 # in 1911, and to UTC-11 in 1950. many earlier sources give UTC-11
1607 # for American Samoa, e.g., the US National Bureau of Standards
1608 # circular "Standard Time Throughout the World", 1932.
1609 # Assume American Samoa switched to UTC-11 in 1911, not 1950,
1610 # and that after 1950 they agreed until (western) Samoa skipped a
1611 # day in 2011. Assume also that the Samoas follow the US and New
1612 # Zealand's "ST"/"DT" style of daylight-saving abbreviations.
1616 # From Paul Eggert (1996-01-22):
1617 # Today's _Wall Street Journal_ (p 1) reports that "Tonga has been plotting
1618 # to sneak ahead of [New Zealanders] by introducing daylight-saving time."
1619 # Since Kiribati has moved the Date Line it's not clear what Tonga will do.
1621 # Don Mundell writes in the 1997-02-20 Tonga Chronicle
1622 # How Tonga became 'The Land where Time Begins':
1623 # http://www.tongatapu.net.to/tonga/homeland/timebegins.htm
1625 # Until 1941 Tonga maintained a standard time 50 minutes ahead of NZST
1626 # 12 hours and 20 minutes ahead of GMT. When New Zealand adjusted its
1627 # standard time in 1940s, Tonga had the choice of subtracting from its
1628 # local time to come on the same standard time as New Zealand or of
1629 # advancing its time to maintain the differential of 13 degrees
1630 # (approximately 50 minutes ahead of New Zealand time).
1632 # Because His Majesty King Tāufaʻāhau Tupou IV, then Crown Prince
1633 # Tungī, preferred to ensure Tonga's title as the land where time
1634 # begins, the Legislative Assembly approved the latter change.
1636 # But some of the older, more conservative members from the outer
1637 # islands objected. "If at midnight on Dec. 31, we move ahead 40
1638 # minutes, as your Royal Highness wishes, what becomes of the 40
1639 # minutes we have lost?"
1641 # The Crown Prince, presented an unanswerable argument: "Remember that
1642 # on the World Day of Prayer, you would be the first people on Earth
1643 # to say your prayers in the morning."
1645 # From Paul Eggert (2006-03-22):
1646 # Shanks & Pottenger say the transition was on 1968-10-01; go with Mundell.
1648 # From Eric Ulevik (1999-05-03):
1649 # Tonga's director of tourism, who is also secretary of the National Millennium
1650 # Committee, has a plan to get Tonga back in front.
1651 # He has proposed a one-off move to tropical daylight saving for Tonga from
1652 # October to March, which has won approval in principle from the Tongan
1655 # From Steffen Thorsen (1999-09-09):
1656 # * Tonga will introduce DST in November
1658 # I was given this link by John Letts:
1659 # http://news.bbc.co.uk/hi/english/world/asia-pacific/newsid_424000/424764.stm
1661 # I have not been able to find exact dates for the transition in November
1662 # yet. By reading this article it seems like Fiji will be 14 hours ahead
1663 # of UTC as well, but as far as I know Fiji will only be 13 hours ahead
1664 # (12 + 1 hour DST).
1666 # From Arthur David Olson (1999-09-20):
1667 # According to <http://www.tongaonline.com/news/sept1799.html>:
1668 # "Daylight Savings Time will take effect on Oct. 2 through April 15, 2000
1669 # and annually thereafter from the first Saturday in October through the
1670 # third Saturday of April. Under the system approved by Privy Council on
1671 # Sept. 10, clocks must be turned ahead one hour on the opening day and
1672 # set back an hour on the closing date."
1673 # Alas, no indication of the time of day.
1675 # From Rives McDow (1999-10-06):
1676 # Tonga started its Daylight Saving on Saturday morning October 2nd at 0200am.
1677 # Daylight Saving ends on April 16 at 0300am which is Sunday morning.
1679 # From Steffen Thorsen (2000-10-31):
1680 # Back in March I found a notice on the website http://www.tongaonline.com
1681 # that Tonga changed back to standard time one month early, on March 19
1682 # instead of the original reported date April 16. Unfortunately, the article
1683 # is no longer available on the site, and I did not make a copy of the
1684 # text, and I have forgotten to report it here.
1685 # (Original URL was <http://www.tongaonline.com/news/march162000.htm>)
1687 # From Rives McDow (2000-12-01):
1688 # Tonga is observing DST as of 2000-11-04 and will stop on 2001-01-27.
1690 # From Sione Moala-Mafi (2001-09-20) via Rives McDow:
1691 # At 2:00am on the first Sunday of November, the standard time in the Kingdom
1692 # shall be moved forward by one hour to 3:00am. At 2:00am on the last Sunday
1693 # of January the standard time in the Kingdom shall be moved backward by one
1696 # From Pulu 'Anau (2002-11-05):
1697 # The law was for 3 years, supposedly to get renewed. It wasn't.
1702 # From Vernice Anderson, Personal Secretary to Philip Jessup,
1703 # US Ambassador At Large (oral history interview, 1971-02-02):
1705 # Saturday, the 14th [of October, 1950] - ... The time was all the
1706 # more confusing at that point, because we had crossed the
1707 # International Date Line, thus getting two Sundays. Furthermore, we
1708 # discovered that Wake Island had two hours of daylight saving time
1709 # making calculation of time in Washington difficult if not almost
1712 # http://www.trumanlibrary.org/wake/meeting.htm
1714 # From Paul Eggert (2003-03-23):
1715 # We have no other report of DST in Wake Island, so omit this info for now.
1717 ###############################################################################
1719 # The International Date Line
1721 # From Gwillim Law (2000-01-03):
1723 # The International Date Line is not defined by any international standard,
1724 # convention, or treaty. Mapmakers are free to draw it as they please.
1725 # Reputable mapmakers will simply ensure that every point of land appears on
1726 # the correct side of the IDL, according to the date legally observed there.
1728 # When Kiribati adopted a uniform date in 1995, thereby moving the Phoenix and
1729 # Line Islands to the west side of the IDL (or, if you prefer, moving the IDL
1730 # to the east side of the Phoenix and Line Islands), I suppose that most
1731 # mapmakers redrew the IDL following the boundary of Kiribati. Even that line
1732 # has a rather arbitrary nature. The straight-line boundaries between Pacific
1733 # island nations that are shown on many maps are based on an international
1734 # convention, but are not legally binding national borders.... The date is
1735 # governed by the IDL; therefore, even on the high seas, there may be some
1736 # places as late as fourteen hours later than UTC. And, since the IDL is not
1737 # an international standard, there are some places on the high seas where the
1738 # correct date is ambiguous.
1740 # From Wikipedia <http://en.wikipedia.org/wiki/Time_zone> (2005-08-31):
1741 # Before 1920, all ships kept local apparent time on the high seas by setting
1742 # their clocks at night or at the morning sight so that, given the ship's
1743 # speed and direction, it would be 12 o'clock when the Sun crossed the ship's
1744 # meridian (12 o'clock = local apparent noon). During 1917, at the
1745 # Anglo-French Conference on Time-keeping at Sea, it was recommended that all
1746 # ships, both military and civilian, should adopt hourly standard time zones
1747 # on the high seas. Whenever a ship was within the territorial waters of any
1748 # nation it would use that nation's standard time. The captain was permitted
1749 # to change his ship's clocks at a time of his choice following his ship's
1750 # entry into another zone time - he often chose midnight. These zones were
1751 # adopted by all major fleets between 1920 and 1925 but not by many
1752 # independent merchant ships until World War II.
1754 # From Paul Eggert, using references suggested by Oscar van Vlijmen
1757 # The American Practical Navigator (2002)
1758 # http://pollux.nss.nima.mil/pubs/pubs_j_apn_sections.html?rid=187
1759 # talks only about the 180-degree meridian with respect to ships in
1760 # international waters; it ignores the international date line.
projects / dragonfly.git / blob