The Bahamas has changed DST rules
The Bahamas announced about a month ago that they plan to change their DST rules to sinc with the U.S. starting in 2007. The attached fax was provided by the Bahama Cabinet office. I was also able to find a corresponding newpaper announcement in the Bahama Journal dated 30 October 2006. http://www.jonesbahamas.com/?c=45&a=10412 _____________________________ Susan J Williams Program Director, IBM Globalization Leadership Team, Globalization Requirements _____________________________
Sue Williams <suew@us.ibm.com> writes:
The Bahamas announced about a month ago that they plan to change their DST rules to sinc with the U.S. starting in 2007.
Thanks for the heads-up; I'll include this in my next proposed patch. This leaves Cuba, Haiti, Mexico, and Turks and Caicos as obvious candidates of countries to watch, to see whether they change their DST rules to match those of the US.
Hi Paul, Happy New Year ! Have you got an date in mind for the next update (assume tzdata2007a) which will include the Bahamas? Many thanks, Dave. Dave O'Callaghan PMP® daveoc@uk.ibm.com Java Service Manager JVM Diagnostics Reference @ http://www.ibm.com/developerworks/java/jdk/diagnosis/ Paul Eggert <eggert@CS.UCLA.EDU> 07/12/2006 21:50 Please respond to tz@elsie.nci.nih.gov To Sue Williams <suew@us.ibm.com> cc tz@lecserver.nci.nih.gov Subject Re: The Bahamas has changed DST rules Sue Williams <suew@us.ibm.com> writes:
The Bahamas announced about a month ago that they plan to change their DST rules to sinc with the U.S. starting in 2007.
Thanks for the heads-up; I'll include this in my next proposed patch. This leaves Cuba, Haiti, Mexico, and Turks and Caicos as obvious candidates of countries to watch, to see whether they change their DST rules to match those of the US.
"Dave O'Callaghan" <daveoc@uk.ibm.com> writes:
Have you got an date in mind for the next update (assume tzdata2007a) which will include the Bahamas?
No, but if there's a need let's put out a new version now. Here is a proposed set of changes that includes the Bahamas change, along with the other changes I've saved up. * Changes affecting future time stamps. - The Bahamas also observe the new US DST rules this year. (Thanks to Sue Williams for this.) * Changes affecting TZ names, to reflect typical English practice better. The old names are still supported, in the 'backward' file. - Rename Africa/Asmera to Africa/Asmara. - Rename Atlantic/Faeroe to Atlantic/Faroe. * A new zone Australia/Eucla, covering the Eucla area. (Thanks to Alex Livingston for this.) * Changes affecting old time stamps. - The 1982 transition for Pacific/Easter occurred Mar 13, not Jan 18. Also, the pre-1932 time stamps are now labeled EMT, not MMT, since they are not Mataveri Mean Time. (Thanks to Jesper Norgaard Welen for this.) * The web page is updated to point to a new research on daylight saving time in Australia commissioned by the Parliamentary Library. =================================================================== RCS file: RCS/africa,v retrieving revision 2006.13 retrieving revision 2006.13.0.1 diff -pu -r2006.13 -r2006.13.0.1 --- africa 2006/10/02 19:31:06 2006.13 +++ africa 2007/01/02 17:34:54 2006.13.0.1 @@ -232,7 +232,7 @@ Zone Africa/Malabo 0:35:08 - LMT 1912 # Eritrea # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Asmera 2:35:32 - LMT 1870 +Zone Africa/Asmara 2:35:32 - LMT 1870 2:35:32 - AMT 1890 # Asmera Mean Time 2:35:20 - ADMT 1936 May 5 # Adis Dera MT 3:00 - EAT =================================================================== RCS file: RCS/australasia,v retrieving revision 2006.16 retrieving revision 2006.16.0.1 diff -pu -r2006.16 -r2006.16.0.1 --- australasia 2006/11/27 13:53:52 2006.16 +++ australasia 2007/01/02 17:34:54 2006.16.0.1 @@ -30,11 +30,6 @@ Zone Australia/Darwin 8:43:20 - LMT 189 9:30 Aus CST # Western Australia # -# From Christopher Hunt (2006-11-21), after an advance warning -# from Jesper Norgaard Welen (2006-11-01): -# WA are trialing DST for three years. -# <http://www.parliament.wa.gov.au/parliament/bills.nsf/62D4F7C55EA889934825721...> -# # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule AW 1974 only - Oct lastSun 2:00s 1:00 - Rule AW 1975 only - Mar Sun>=1 2:00s 0 - @@ -48,6 +43,10 @@ Rule AW 2007 2008 - Oct lastSun 2:00s 1: Zone Australia/Perth 7:43:24 - LMT 1895 Dec 8:00 Aus WST 1943 Jul 8:00 AW WST +Zone Australia/Eucla 8:35:28 - LMT 1895 Dec + 8:45 Aus CWST 1943 Jul + 8:45 AW CWST + # Queensland # # From Alex Livingston (1996-11-01): @@ -203,16 +202,16 @@ Zone Australia/Lord_Howe 10:36:20 - LMT # # Ashmore Is, Cartier # no indigenous inhabitants; only seasonal caretakers -# like Australia/Perth, says Turner +# no times are set # # Coral Sea Is # no indigenous inhabitants; only meteorologists -# no information +# no times are set # # Macquarie # permanent occupation (scientific station) since 1948; # sealing and penguin oil station operated 1888/1917 -# like Australia/Hobart, says Turner +# like Australia/Hobart # Christmas # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -544,6 +543,7 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 # std dst # LMT Local Mean Time # 8:00 WST WST Western Australia +# 8:45 CWST CWST Central Western Australia* # 9:00 JST Japan # 9:30 CST CST Central Australia # 10:00 EST EST Eastern Australia @@ -816,37 +816,51 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 # From Arthur David Olson (1992-03-08): # The chosen rules the union of the 1971/1972 change and the 1989-1992 changes. +# From Christopher Hunt (2006-11-21), after an advance warning +# from Jesper Norgaard Welen (2006-11-01): +# WA are trialing DST for three years. +# <http://www.parliament.wa.gov.au/parliament/bills.nsf/9A1B183144403DA54825721...> + # From Rives McDow (2002-04-09): # The most interesting region I have found consists of three towns on the -# southern coast of Australia, population 10 at last report, along with -# 50,000 sheep, about 100 kilometers long and 40 kilometers into the -# continent. The primary town is Madura, with the other towns being -# Mundrabilla and Eucla. According to the sheriff of Madura, the -# residents got tired of having to change the time so often, as they are -# located in a strip overlapping the border of South Australia and Western -# Australia. South Australia observes daylight saving time; Western +# southern coast.... South Australia observes daylight saving time; Western # Australia does not. The two states are one and a half hours apart. The # residents decided to forget about this nonsense of changing the clock so # much and set the local time 20 hours and 45 minutes from the # international date line, or right in the middle of the time of South -# Australia and Western Australia. As it only affects about 10 people and -# tourists staying at the Madura Motel, it has never really made as big an -# impact as Broken Hill. However, as tourist visiting there or anyone -# calling the local sheriff will attest, they do keep time in this way. +# Australia and Western Australia.... # # From Paul Eggert (2002-04-09): # This is confirmed by the section entitled # "What's the deal with time zones???" in -# <http://www.earthsci.unimelb.edu.au/~awatkins/null.html>, -# which says a few other things: +# <http://www.earthsci.unimelb.edu.au/~awatkins/null.html>. # -# * Border Village, SA also is 45 minutes ahead of Perth. -# * The locals call this time zone "central W.A. Time" (presumably "CWAT"). -# * The locals also call Western Australia time "Perth time". -# -# It's not clear from context whether everyone in Western Australia -# knows of this naming convention, or whether it's just the people in -# this subregion. +# From Alex Livingston (2006-12-07): +# ... it was just on four years ago that I drove along the Eyre Highway, +# which passes through eastern Western Australia close to the southern +# coast of the continent. +# +# I paid particular attention to the time kept there. There can be no +# dispute that UTC+08:45 was considered "the time" from the border +# village just inside the border with South Australia to as far west +# as just east of Caiguna. There can also be no dispute that Eucla is +# the largest population centre in this zone.... +# +# Now that Western Australia is observing daylight saving, the +# question arose whether this part of the state would follow suit. I +# just called the border village and confirmed that indeed they have, +# meaning that they are now observing UTC+09:45. +# +# (2006-12-09): +# I personally doubt that either experimentation with daylight saving +# in WA or its introduction in SA had anything to do with the genesis +# of this time zone. My hunch is that it's been around since well +# before 1975. I remember seeing it noted on road maps decades ago. + +# From Paul Eggert (2006-12-15): +# For lack of better info, assume the tradition dates back to the +# introduction of standard time in 1895. + # South Australia, Tasmania, Victoria =================================================================== RCS file: RCS/backward,v retrieving revision 2006.11 retrieving revision 2006.11.0.1 diff -pu -r2006.11 -r2006.11.0.1 --- backward 2006/08/21 13:56:08 2006.11 +++ backward 2007/01/02 17:34:54 2006.11.0.1 @@ -3,6 +3,7 @@ # This file provides links between current names for time zones # and their old names. Many names changed in late 1993. +Link Africa/Asmara Africa/Asmera Link Africa/Bamako Africa/Timbuktu Link America/Argentina/Catamarca America/Argentina/ComodRivadavia Link America/Adak America/Atka @@ -28,6 +29,7 @@ Link Asia/Jerusalem Asia/Tel_Aviv Link Asia/Thimphu Asia/Thimbu Link Asia/Makassar Asia/Ujung_Pandang Link Asia/Ulaanbaatar Asia/Ulan_Bator +Link Atlantic/Faroe Atlantic/Faeroe Link Australia/Sydney Australia/ACT Link Australia/Sydney Australia/Canberra Link Australia/Lord_Howe Australia/LHI =================================================================== RCS file: RCS/europe,v retrieving revision 2006.14 retrieving revision 2006.14.0.1 diff -pu -r2006.14 -r2006.14.0.1 --- europe 2006/10/10 15:31:46 2006.14 +++ europe 2007/01/02 17:34:54 2006.14.0.1 @@ -754,7 +754,7 @@ Zone Europe/Prague 0:57:44 - LMT 1850 1:00 Czech CE%sT 1979 1:00 EU CE%sT -# Denmark, Faeroe Islands, and Greenland +# Denmark, Faroe Islands, and Greenland # From Jesper Norgaard Welen (2005-04-26): # http://www.hum.aau.dk/~poe/tid/tine/DanskTid.htm says that the law @@ -809,7 +809,7 @@ Zone Europe/Copenhagen 0:50:20 - LMT 18 1:00 C-Eur CE%sT 1945 Apr 2 2:00 1:00 Denmark CE%sT 1980 1:00 EU CE%sT -Zone Atlantic/Faeroe -0:27:04 - LMT 1908 Jan 11 # Torshavn +Zone Atlantic/Faroe -0:27:04 - LMT 1908 Jan 11 # Torshavn 0:00 - WET 1981 0:00 EU WE%sT # =================================================================== RCS file: RCS/iso3166.tab,v retrieving revision 2006.14 retrieving revision 2006.14.0.1 diff -pu -r2006.14 -r2006.14.0.1 --- iso3166.tab 2006/10/10 15:31:46 2006.14 +++ iso3166.tab 2007/01/02 17:34:54 2006.14.0.1 @@ -92,7 +92,7 @@ FI Finland FJ Fiji FK Falkland Islands FM Micronesia -FO Faeroe Islands +FO Faroe Islands FR France GA Gabon GB Britain (UK) =================================================================== RCS file: RCS/northamerica,v retrieving revision 2006.15 retrieving revision 2006.15.0.1 diff -pu -r2006.15 -r2006.15.0.1 --- northamerica 2006/11/06 14:17:39 2006.15 +++ northamerica 2007/01/02 17:34:54 2006.15.0.1 @@ -1997,13 +1997,19 @@ Zone America/Antigua -4:07:12 - LMT 1912 -4:00 - AST # Bahamas +# +# From Sue Williams (2006-12-07): +# The Bahamas announced about a month ago that they plan to change their DST +# rules to sync with the U.S. starting in 2007.... +# http://www.jonesbahamas.com/?c=45&a=10412 + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule Bahamas 1964 max - Oct lastSun 2:00 0 S +Rule Bahamas 1964 2006 - Oct lastSun 2:00 0 S Rule Bahamas 1964 1986 - Apr lastSun 2:00 1:00 D -Rule Bahamas 1987 max - Apr Sun>=1 2:00 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Nassau -5:09:24 - LMT 1912 Mar 2 - -5:00 Bahamas E%sT + -5:00 Bahamas E%sT 1976 + -5:00 US E%sT # Barbados # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S =================================================================== RCS file: RCS/southamerica,v retrieving revision 2006.15 retrieving revision 2006.15.0.1 diff -pu -r2006.15 -r2006.15.0.1 --- southamerica 2006/11/06 14:17:39 2006.15 +++ southamerica 2007/01/02 17:34:54 2006.15.0.1 @@ -714,8 +714,13 @@ Zone America/Rio_Branco -4:31:12 - LMT 1 # (they should have been 1990-09-15 and 1990-09-16 respectively), but # anyhow it clears up some doubts too. -# The following data are from <http://www.horaoficial.cl/horaof.htm> -# (2006-09-20), transcribed by Jesper Norgaard Welen. +# From Paul Eggert (2006-12-27): +# The following data for Chile and America/Santiago are from +# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by +# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks +# & Pottenger, except with DST transitions after 1932 cloned from +# America/Santiago. The pre-1980 Pacific/Easter data are dubious, +# but we have no other source. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Chile 1927 1932 - Sep 1 0:00 1:00 S @@ -759,9 +764,9 @@ Zone America/Santiago -4:42:46 - LMT 189 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time -5:00 Chile CL%sT 1947 May 22 # Chile Time -4:00 Chile CL%sT -Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri - -7:17:28 - MMT 1932 Sep # Mataveri Mean Time - -7:00 Chile EAS%sT 1982 Jan 18 21:00 # Easter I Time +Zone Pacific/Easter -7:17:28 - LMT 1890 + -7:17:28 - EMT 1932 Sep # Easter Mean Time + -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time -6:00 Chile EAS%sT # # Sala y Gomez Island is like Pacific/Easter. =================================================================== RCS file: RCS/tz-link.htm,v retrieving revision 2006.16 retrieving revision 2006.16.0.1 diff -pu -r2006.16 -r2006.16.0.1 --- tz-link.htm 2006/11/27 13:53:52 2006.16 +++ tz-link.htm 2007/01/02 17:34:54 2006.16.0.1 @@ -8,7 +8,7 @@ <meta http-equiv="Content-type" content='text/html; charset="US-ASCII"'> <meta name="DC.Creator" content="Eggert, Paul"> <meta name="DC.Contributor" content="Olson, Arthur David"> -<meta name="DC.Date" content="2006-11-22"> +<meta name="DC.Date" content="2007-01-02"> <meta name="DC.Description" content="Sources of information about time zones and daylight saving time"> <meta name="DC.Identifier" content="http://www.twinsun.com/tz/tz-link.htm"> @@ -379,7 +379,10 @@ Zone Concepts</a> discusses terminologic <h2>National histories of legal time</h2> <dl> <dt>Australia</dt> -<dd>The Bureau of Metrology publishes a list of +<dd>The Parliamentary Library has commissioned <a +href="http://www.aph.gov.au/LIBRARY/Pubs/rn/2006-07/07rn13.pdf">research +note on daylight saving time in Australia</a>. +The Bureau of Metrology publishes a list of <a href="http://www.bom.gov.au/climate/averages/tables/dst_times.shtml">Implementation Dates of Daylight Savings Time within Australia</a>.</dd> <dt>Austria</dt> <dd>The Federal Office of Metrology and Surveying publishes a =================================================================== RCS file: RCS/zone.tab,v retrieving revision 2006.16 retrieving revision 2006.16.0.1 diff -pu -r2006.16 -r2006.16.0.1 --- zone.tab 2006/11/27 13:53:52 2006.16 +++ zone.tab 2007/01/02 17:34:54 2006.16.0.1 @@ -63,7 +63,8 @@ AU -2728+15302 Australia/Brisbane Queens AU -2016+14900 Australia/Lindeman Queensland - Holiday Islands AU -3455+13835 Australia/Adelaide South Australia AU -1228+13050 Australia/Darwin Northern Territory -AU -3157+11551 Australia/Perth Western Australia +AU -3157+11551 Australia/Perth Western Australia - most locations +AU -3143+12852 Australia/Eucla Western Australia - Eucla area AW +1230-06858 America/Aruba AX +6006+01957 Europe/Mariehamn AZ +4023+04951 Asia/Baku @@ -134,7 +135,7 @@ CH +4723+00832 Europe/Zurich CI +0519-00402 Africa/Abidjan CK -2114-15946 Pacific/Rarotonga CL -3327-07040 America/Santiago most locations -CL -2710-10927 Pacific/Easter Easter Island & Sala y Gomez +CL -2709-10926 Pacific/Easter Easter Island & Sala y Gomez CM +0403+00942 Africa/Douala CN +3114+12128 Asia/Shanghai east China - Beijing, Guangdong, Shanghai, etc. CN +4545+12641 Asia/Harbin Heilongjiang (except Mohe), Jilin @@ -159,7 +160,7 @@ EC -0054-08936 Pacific/Galapagos Galapag EE +5925+02445 Europe/Tallinn EG +3003+03115 Africa/Cairo EH +2709-01312 Africa/El_Aaiun -ER +1520+03853 Africa/Asmera +ER +1520+03853 Africa/Asmara ES +4024-00341 Europe/Madrid mainland ES +3553-00519 Africa/Ceuta Ceuta & Melilla ES +2806-01524 Atlantic/Canary Canary Islands
On Tue, 2 Jan 2007, Paul Eggert wrote:
RCS file: RCS/africa,v retrieving revision 2006.13 retrieving revision 2006.13.0.1 diff -pu -r2006.13 -r2006.13.0.1 --- africa 2006/10/02 19:31:06 2006.13 +++ africa 2007/01/02 17:34:54 2006.13.0.1 @@ -232,7 +232,7 @@ Zone Africa/Malabo 0:35:08 - LMT 1912
# Eritrea # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Asmera 2:35:32 - LMT 1870 +Zone Africa/Asmara 2:35:32 - LMT 1870 2:35:32 - AMT 1890 # Asmera Mean Time
Perhaps you should change the comment to "Asmara Mean Time" as well? regards, Derick -- Derick Rethans http://derickrethans.nl | http://ez.no | http://xdebug.org
Derick Rethans <dr@ez.no> writes:
-Zone Africa/Asmera 2:35:32 - LMT 1870 +Zone Africa/Asmara 2:35:32 - LMT 1870
Perhaps you should change the comment to "Asmara Mean Time" as well?
Thanks for catching that. I'll do that in my next proposed patch, if Arthur David Olson doesn't fix it upstream first.
From: Paul Eggert Date: Tue, 02 Jan 2007 09:45:36 -0800 Subject: proposed tz changes for Bahamas, Eucla, Eritrea, Faroe
-Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri - -7:17:28 - MMT 1932 Sep # Mataveri Mean Time - -7:00 Chile EAS%sT 1982 Jan 18 21:00 # Easter I Time +Zone Pacific/Easter -7:17:28 - LMT 1890 + -7:17:28 - EMT 1932 Sep # Easter Mean Time + -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time -6:00 Chile EAS%sT
The zone.tab entry for Easter Island is changed, so the local mean time should probably change too. For Hanga Roa: 27:09S 109:26W, I arrive at -7:17:44
Oscar van Vlijmen <ovv@hetnet.nl> writes:
The zone.tab entry for Easter Island is changed, so the local mean time should probably change too. For Hanga Roa: 27:09S 109:26W, I arrive at -7:17:44
Thanks, I'll put that in my next proposed patch too (if Arthur doesn't catch it).
participants (5)
-
Dave O'Callaghan -
Derick Rethans -
Oscar van Vlijmen -
Paul Eggert -
Sue Williams