[tz] Updated Proposed time zone package changes (Armenia, Chile, Falklands, Tokelau, Antarctica, Creston(Canada))

Robert Elz kre at munnari.OZ.AU
Mon Feb 27 14:23:27 UTC 2012


Since there have been a number of modifications, I thought it worthwhile
to send a complete update of the proposed timezone package update,
still planned to be released March 1 (from an east of Greenwich zone...)

The executive summary
	tzcode: updates to reflect the current homes of the
		mailing list and distribution files (no changes
		to the C code at all in this version, unless you
		need the README or .htm files, you do not need this update.)

		Note: I have used munnari.oz.au as the primary home for
		the tz*.tar.gz files as (for now anyway) that is where it
		is, if the primary source moves to the IANA systems in the
		future this can be updated.

		A link to DateTime::TimeZone::Tzfile has been added.

	tzdata:

	antarctica current best known timezone info for various
		antarctic bases for the winter of 2012

	asia	Armenia has abolished summer time

	australasia
		Tokelau copied Samoa and swapped sides of the
		International Data line last December.  NB: this
		change affects current timestamps.

	europe	Updated URL for UK timezone history.

	leapseconds
		Bulletin C43 incorporated (a leap Second will occur
		2012-06-30 at 23:59:60 UTC)   Bulletin C42 was also
		incorporated (but never released) - it said nothing
		very interesting (no leap second 2011-12-31).

	northamerica
		New zone America/Creston created for an area in
		British Columbia that was previously (and apparently
		incorrectly) considered identical to Dawson Creek.
		Also, some corrections to 1918 summer time end dates
		in several Canadian zones.

	southamerica
		Chile has extended Summer time in the 2011/2 summer.
		Future years (2013->) are assumed revert to "normal" for now.
		The Falkland Islands now have it permanently (continuing
		the 2011 experiment.)   This "permanently" is a guess,
		it apparently is certain for 2012 (as certain as these
		things ever are) and considered likely into the future.

	zone.tab
		New America/Creston zone added, and a typo in the entry
		for Europe/Samara corrected.

There are three significant changes from the proposed update posted
earlier today.

1) The spelling changes for some French place names are on hold, pending
a decision on what should actually appear (this affects only comments in
the data file.)

2) A link to DateTime::TimeZone::Tzfile was added to tz-link.htm in the
tzcode set.

3) America/Creston zone definition changed (and not the same as the one
I proposed a few hours ago).   It seems unclear (certainly to me) whether
Creston used PST or MST in the period from 1884 to 1916 (PST seems clear
from 1916 to 1918, then MST since).   The first proposed update used MST
for that doubtful period, I switched that to PST in my proposed correction.
I have decided now to revert that part of the change, leaving MST for the
1814-1916 period.   If anyone has compelling contrary research, please
let us know.

Again, review of all of these proposed changes is appreciated.

And finally, in the last proposed update, I forgot to acknowledge the
work of Tim Parenti, who sent me a complete set of data patches to
simplify my task in preparing these updates (some of them I used, some
of them I had already made, others I did differently - errors are all
my responsibility.)

kre

--- README	2012/02/25 03:44:34	1.1
+++ README	2012/02/26 22:37:09
@@ -1,4 +1,4 @@
-@(#)README	8.3
+@(#)README	8.4
 This file is in the public domain, so clarified as of
 2009-05-17 by Arthur David Olson.
 
@@ -40,7 +40,7 @@
 
 	mkdir tz
 	cd tz
-	wget 'ftp://elsie.nci.nih.gov/pub/tz*.tar.gz'
+	wget 'ftp://munnari.oz.au/pub/tz*.tar.gz'
 	gzip -dc tzcode*.tar.gz | tar -xf -
 	gzip -dc tzdata*.tar.gz | tar -xf -
 
@@ -71,7 +71,7 @@
 1970, and there are undoubtedly errors even for time stamps since 1970.
 If you know that the rules are different from those in a file, by all means
 feel free to change file (and please send the changed version to
-tz at elsie.nci.nih.gov for use in the future).  Europeans take note!
+tz at iana.org for use in the future).  Europeans take note!
 
 Thanks to these Timezone Caballeros who've made major contributions to the
 time conversion package:  Keith Bostic; Bob Devine; Paul Eggert; Robert Elz;
@@ -80,7 +80,13 @@
 for testing work, and to Gwillim Law for checking local mean time data.
 None of them are responsible for remaining errors.
 
-Look in the ~ftp/pub directory of elsie.nci.nih.gov
+Look in the ~ftp/pub directory of munnari.oz.au
 for updated versions of these files.
 
-Please send comments or information to tz at elsie.nci.nih.gov.
+Please send comments or information to tz at iana.org.
+
+Postscript:  The README above is largely unmodified (aside from details
+of mailing list and ftp archive addresses) from that prepared many years
+ago by Arthur David Olson, to whom the timezone community owes the
+greatest debt of all.  Arthur is not currently maintaining this data or
+code (though he remains involved).
--- tz-art.htm	2012/02/25 03:47:12	1.1
+++ tz-art.htm	2012/02/26 23:38:50
@@ -9,7 +9,7 @@
 <body>
 <h1>Time and the Arts</h1>
 <address>
-@(#)tz-art.htm	8.20
+@(#)tz-art.htm	8.21
 </address>
 <p>
 This file is in the public domain, so clarified as of
@@ -17,7 +17,7 @@
 </p>
 <p>
 Please send corrections to this web page to the
-<a href="mailto:tz at elsie.nci.nih.gov">time zone mailing list</a>.</p>
+<a href="mailto:tz at iana.org">time zone mailing list</a>.</p>
 <p>
 See also <a href="tz-link.htm">Sources for Time Zone and Daylight Saving Time Data</a>.</p>
 <hr>
--- tz-link.htm	2012/02/25 03:47:12	1.1
+++ tz-link.htm	2012/02/27 13:25:59
@@ -18,7 +18,7 @@
 <body>
 <h1>Sources for Time Zone and Daylight Saving Time Data</h1>
 <address>
-@(#)tz-link.htm	8.32
+@(#)tz-link.htm	8.33
 </address>
 <p>
 This file is in the public domain, so clarified as of
@@ -26,7 +26,7 @@
 </p>
 <p>
 Please send corrections to this web page to the
-<a href="mailto:tz at elsie.nci.nih.gov">time zone mailing list</a>.</p>
+<a href="mailto:tz at iana.org">time zone mailing list</a>.</p>
 <h2>The <code>tz</code> database</h2>
 <p>
 The <a href="http://en.wikipedia.org/wiki/Public_domain">public-domain</a>
@@ -83,7 +83,7 @@
 the location's full name, e.g., <code>TZ="America/New_York"</code>.</p>
 <p>
 In the <code>tz</code> database's
-<a href="ftp://elsie.nci.nih.gov/pub"><abbr
+<a href="ftp://munnari.oz.au/pub"><abbr
 title="File Transfer Protocol">FTP</abbr> distribution</a>
 the code is in the file <code>tzcode<var>C</var>.tar.gz</code>,
 where <code><var>C</var></code> is the code's version;
@@ -98,25 +98,30 @@
 <code>README</code> file for what to do next.</p>
 <pre style="margin-left: 2em"><code>mkdir tz
 cd tz
-<a href="http://www.gnu.org/software/wget/">wget</a> 'ftp://elsie.nci.nih.gov/pub/tz*.tar.gz'
+<a href="http://www.gnu.org/software/wget/">wget</a> 'ftp://munnari.oz.au/pub/tz*.tar.gz'
 <a href="http://www.gnu.org/software/gzip/">gzip</a> -dc tzcode*.tar.gz | <a href="http://www.gnu.org/software/tar/">tar</a> -xf -
 gzip -dc tzdata*.tar.gz | tar -xf -
 </code></pre>
 <p>
+The code and data files can also be obtained from the
+<a href="http://www.iana.org">IANA</a>
+<a href="http://www.iana.org/time-zones">timezone web page</a>.
+<p>
 The code lets you compile the <code>tz</code> source files into
 machine-readable binary files, one for each location. It also lets
 you read a <code>tz</code> binary file and interpret time stamps for that
 location.</p>
 <p>
 The data are by no means authoritative. If you find errors, please
-send changes to the <a href="mailto:tz at elsie.nci.nih.gov">time zone
+send changes to the <a href="mailto:tz at iana.org">time zone
 mailing list</a>. You can also <a
 href="http://news.gmane.org/gmane.comp.time.tz">browse recent
 messages</a> sent to the mailing list, <a
-href="mailto:tz-request at elsie.nci.nih.gov">subscribe</a> to it,
-retrieve the <a
-href="ftp://elsie.nci.nih.gov/pub/tzarchive.gz">full archive of old
-messages</a> (in gzip compressed format), or retrieve <a
+href="https://mm.icann.org/mailman/listinfo/tz">subscribe</a> to it.
+browse the <a
+href="http://mm.icann.org/pipermail/tz/">archive of old
+messages</a> (message by message or in gzip compressed format),
+or retrieve <a
 href="ftp://munnari.oz.au/pub/oldtz">archived older versions of code
 and data</a>.</p>
 <p>
@@ -273,6 +278,11 @@
 It is freely available under the <abbr>LGPL</abbr>.</li>
 <li>Tcl, mentioned above, also contains a
 <code>tz</code> binary file reader.</li>
+<li><a href="http://search.cpan.org/perldoc?DateTime::TimeZone::Tzfile">
+DateTime::TimeZone::Tzfile</a>
+is a <code>tz</code> binary file reader written in Perl.
+It is freely available under the same terms as Perl
+(dual <abbr>GPL</abbr> and Artistic license).</li>
 </ul>
 <h2>Other <code>tz</code>-based time zone software</h2>
 <ul>
--- antarctica	2011/10/07 06:09:10	1.1
+++ antarctica	2012/02/26 23:03:41
@@ -1,5 +1,5 @@
 # <pre>
-# @(#)antarctica	8.9
+# @(#)antarctica	8.10
 # This file is in the public domain, so clarified as of
 # 2009-05-17 by Arthur David Olson.
 
@@ -42,8 +42,19 @@
 Rule	ChileAQ	1998	only	-	Mar	Sun>=9	3:00u	0	-
 Rule	ChileAQ	1998	only	-	Sep	27	4:00u	1:00	S
 Rule	ChileAQ	1999	only	-	Apr	 4	3:00u	0	-
-Rule	ChileAQ	1999	max	-	Oct	Sun>=9	4:00u	1:00	S
-Rule	ChileAQ	2000	max	-	Mar	Sun>=9	3:00u	0	-
+Rule    ChileAQ 1999    2010    -       Oct     Sun>=9  4:00u   1:00    S
+Rule    ChileAQ 2000    2007    -       Mar     Sun>=9  3:00u   0       -
+# N.B.: the end of March 29 in Chile is March 30 in Universal time,
+# which is used below in specifying the transition.
+Rule    ChileAQ 2008    only    -       Mar     30      3:00u   0       -
+Rule    ChileAQ 2009    only    -       Mar     Sun>=9  3:00u   0       -
+Rule    ChileAQ 2010    only    -       Apr     Sun>=1  3:00u   0       -
+Rule    ChileAQ 2011    only    -       May     Sun>=2  3:00u   0       -
+Rule    ChileAQ 2011    only    -       Aug     Sun>=16 4:00u   1:00    S
+Rule	ChileAQ	2012	only	-	Apr	Sun>=23	3:00u	0	-
+Rule	ChileAQ	2012	only	-	Sep	Sun>=2	4:00u	1:00	S
+Rule    ChileAQ 2013    max     -       Mar     Sun>=9  3:00u   0       -
+Rule    ChileAQ 2013    max     -       Oct     Sun>=9  4:00u   1:00    S
 
 # These rules are stolen from the `australasia' file.
 Rule	AusAQ	1917	only	-	Jan	 1	0:01	1:00	-
@@ -142,12 +153,16 @@
 						# Western (Aus) Standard Time
 			11:00	-	CAST	2010 Mar 5 2:00
 						# Casey Time
+			8:00	-	WST	2011 Oct 28 2:00
+			11:00	-	CAST	2012 Feb 21 17:00u
 			8:00	-	WST
 Zone Antarctica/Davis	0	-	zzz	1957 Jan 13
 			7:00	-	DAVT	1964 Nov # Davis Time
 			0	-	zzz	1969 Feb
 			7:00	-	DAVT	2009 Oct 18 2:00
 			5:00	-	DAVT	2010 Mar 10 20:00u
+			7:00	-	DAVT	2011 Oct 28 2:00
+			5:00	-	DAVT	2012 Feb 21 20:00u
 			7:00	-	DAVT
 Zone Antarctica/Mawson	0	-	zzz	1954 Feb 13
 			6:00	-	MAWT	2009 Oct 18 2:00
--- asia	2011/10/15 03:19:42	1.4
+++ asia	2012/02/26 23:05:26
@@ -1,4 +1,4 @@
-# @(#)asia	8.69
+# @(#)asia	8.70
 # This file is in the public domain, so clarified as of
 # 2009-05-17 by Arthur David Olson.
 
@@ -77,10 +77,6 @@
 Rule RussiaAsia	1993	1995	-	Sep	lastSun	 2:00s	0	-
 Rule RussiaAsia	1996	max	-	Oct	lastSun	 2:00s	0	-
 
-# From Arthur David Olson (2011-06-15):
-# While Russia abandoned DST in 2011, Armenia may choose to
-# follow Russia's "old" rules.
-
 # Afghanistan
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Kabul	4:36:48 -	LMT	1890
@@ -97,6 +93,21 @@
 # in 1996, though it did use DST in 1995.  IATA SSIM (1991/1998) reports that
 # Armenia switched from 3:00 to 4:00 in 1998 and observed DST after 1991,
 # but started switching at 3:00s in 1998.
+
+# From Arthur David Olson (2011-06-15):
+# While Russia abandoned DST in 2011, Armenia may choose to
+# follow Russia's "old" rules.
+
+# From Alexander Krivenyshev (2012-02-10):
+# According to News Armenia, on Feb 9, 2012,
+# http://newsarmenia.ru/society/20120209/42609695.html
+# 
+# The Armenia National Assembly adopted final reading of Amendments to the
+# Law "On procedure of calculation time on the territory of the Republic of
+# Armenia" according to which Armenia [is] abolishing Daylight Saving Time.
+# or
+# (brief)
+# http://www.worldtimezone.com/dst_news/dst_news_armenia03.html
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Yerevan	2:58:00 -	LMT	1924 May  2
 			3:00	-	YERT	1957 Mar    # Yerevan Time
@@ -104,7 +115,8 @@
 			3:00	1:00	YERST	1991 Sep 23 # independence
 			3:00 RussiaAsia	AM%sT	1995 Sep 24 2:00s
 			4:00	-	AMT	1997
-			4:00 RussiaAsia	AM%sT
+			4:00 RussiaAsia	AM%sT	2012 Mar 25 2:00s
+			4:00	-	AMT
 
 # Azerbaijan
 # From Rustam Aliyev of the Azerbaijan Internet Forum (2005-10-23):
--- australasia	2011/10/31 06:47:12	1.5
+++ australasia	2012/02/26 23:07:14
@@ -1,5 +1,5 @@
 # <pre>
-# @(#)australasia	8.29
+# @(#)australasia	8.30
 # This file is in the public domain, so clarified as of
 # 2009-05-17 by Arthur David Olson.
 
@@ -616,6 +616,11 @@
 # Dateline Change skip Friday 30th Dec 2011
 # Thursday 29th December 2011	23:59:59 Hours
 # Saturday 31st December 2011	00:00:00 Hours
+#
+# Clarification by Tim Parenti (2012-01-03):
+# Although Samoa has used Daylight Saving Time in the 2010-2011 and 2011-2012
+# seasons, there is not yet any indication that this trend will continue on
+# a regular basis. For now, we have explicitly listed the transitions below.
 Zone Pacific/Apia	 12:33:04 -	LMT	1879 Jul  5
 			-11:26:56 -	LMT	1911
 			-11:30	-	SAMT	1950		# Samoa Time
@@ -633,9 +638,28 @@
 			11:00	-	SBT	# Solomon Is Time
 
 # Tokelau Is
+#
+# From Gwillim Law (2011-12-29)
+# A correspondent informed me that Tokelau, like Samoa, will be skipping
+# December 31 this year, thereby changing its time zone from UTC-10 to
+# UTC+14. When I tried to verify this statement, I found a confirming
+# article in Time magazine online
+# <a href="http://www.time.com/time/world/article/0,8599,2103243,00.html">
+# (http://www.time.com/time/world/article/0,8599,2103243,00.html).
+# </a>
+#
+# From Jonathan Leffler (2011-12-29)
+# Information from the BBC to the same effect:
+# <a href="http://www.bbc.co.uk/news/world-asia-16351377">
+# http://www.bbc.co.uk/news/world-asia-16351377
+# </a>
+#
+# Patch supplied by Tim Parenti (2011-12-29)
+
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Pacific/Fakaofo	-11:24:56 -	LMT	1901
-			-10:00	-	TKT	# Tokelau Time
+			-10:00	-	TKT 2011 Dec 30	# Tokelau Time
+			14:00	-	TKT
 
 # Tonga
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
--- europe	2011/10/31 06:48:42	1.3
+++ europe	2012/02/27 08:03:57
@@ -1,5 +1,5 @@
 # <pre>
-# @(#)europe	8.40
+# @(#)europe	8.41
 # This file is in the public domain, so clarified as of
 # 2009-05-17 by Arthur David Olson.
 
@@ -211,9 +211,15 @@
 # the history of summer time legislation in the United Kingdom.
 # Since 1998 Joseph S. Myers has been updating
 # and extending this list, which can be found in
-# <a href="http://student.cusu.cam.ac.uk/~jsm28/british-time/">
+# http://student.cusu.cam.ac.uk/~jsm28/british-time/
+# <a href="http://www.polyomino.org.uk/british-time/">
 # History of legal time in Britain
 # </a>
+# Rob Crowther (2012-01-04) reports that that URL no longer
+# exists, and the article can now be found at:
+# <a href="http://www.polyomino.org.uk/british-time/">
+# http://www.polyomino.org.uk/british-time/
+# </a>
 
 # From Joseph S. Myers (1998-01-06):
 #
--- leapseconds	2011/10/07 06:09:10	1.1
+++ leapseconds	2012/01/06 11:37:49
@@ -1,5 +1,5 @@
 # <pre>
-# @(#)leapseconds	8.11
+# @(#)leapseconds	8.13
 # This file is in the public domain, so clarified as of
 # 2009-05-17 by Arthur David Olson.
 
@@ -48,40 +48,54 @@
 Leap	1998	Dec	31	23:59:60	+	S
 Leap	2005	Dec	31	23:59:60	+	S
 Leap	2008	Dec	31	23:59:60	+	S
+Leap	2012	Jun	30	23:59:60	+	S
 
 # INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)
 #
 # SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE
 #
+#
 # SERVICE DE LA ROTATION TERRESTRE
 # OBSERVATOIRE DE PARIS
 # 61, Av. de l'Observatoire 75014 PARIS (France)
-# Tel.      : 33 (0) 1 40 51 22 29
+# Tel.      : 33 (0) 1 40 51 22 26
 # FAX       : 33 (0) 1 40 51 22 91
-# Internet  : services.iers at obspm.fr
+# e-mail    : (E-Mail Removed)
+# http://hpiers.obspm.fr/eop-pc
+#
+# Paris, 5 January 2012
 #
-# Paris, 2 February 2011
 #
-# Bulletin C 41
+# Bulletin C 43
 #
 # To authorities responsible
 # for the measurement and
 # distribution of time
 #
-# INFORMATION ON UTC - TAI
 #
-# NO positive leap second will be introduced at the end of June 2011.
-# The difference between Coordinated Universal Time UTC and the
-# International Atomic Time TAI is :		
+# UTC TIME STEP
+# on the 1st of July 2012
+#
 #
-# from 2009 January 1, 0h UTC, until further notice : UTC-TAI = -34 s
+# A positive leap second will be introduced at the end of June 2012.
+# The sequence of dates of the UTC second markers will be:		
+# 		
+#                          2012 June 30,     23h 59m 59s
+#                          2012 June 30,     23h 59m 60s
+#                          2012 July  1,      0h  0m  0s
+#
+# The difference between UTC and the International Atomic Time TAI is:
+#
+# from 2009 January 1, 0h UTC, to 2012 July 1  0h UTC  : UTC-TAI = - 34s
+# from 2012 July 1,    0h UTC, until further notice    : UTC-TAI = - 35s
 #
 # Leap seconds can be introduced in UTC at the end of the months of December
-# or June,  depending on the evolution of UT1-TAI. Bulletin C is mailed every
-# six months, either to announce a time step in UTC, or to confirm that there
+# or June, depending on the evolution of UT1-TAI. Bulletin C is mailed every
+# six months, either to announce a time step in UTC or to confirm that there
 # will be no time step at the next possible date.
 #
+#
 # Daniel GAMBIS
-# Head			
-# Earth Orientation Center of the IERS
+# Head		
+# Earth Orientation Center of IERS
 # Observatoire de Paris, France
--- northamerica	2011/10/31 06:49:15	1.4
+++ northamerica	2012/02/27 13:36:20
@@ -1,5 +1,5 @@
 # <pre>
-# @(#)northamerica	8.51
+# @(#)northamerica	8.52
 # This file is in the public domain, so clarified as of
 # 2009-05-17 by Arthur David Olson.
 
@@ -1120,9 +1120,26 @@
 # For now, assume all of DST-observing Canada will fall into line with the
 # new US DST rules,
 
+# From Chris Walton (2011-12-01)
+# In the first of Tammy Hardwick's articles
+# <a href="http://www.ilovecreston.com/?p=articles&t=spec&ar=260">
+# http://www.ilovecreston.com/?p=articles&t=spec&ar=260
+# </a>
+# she quotes the Friday November 1/1918 edition of the Creston Review.
+# The quote includes these two statements:
+# 'Sunday the CPR went back to the old system of time...'
+# '... The daylight saving scheme was dropped all over Canada at the same time,'
+# These statements refer to a transition from daylight time to standard time
+# that occurred nationally on Sunday October 27/1918.  This transition was
+# also documented in the Saturday October 26/1918 edition of the Toronto Star.
+
+# In light of that evidence, we alter the date from the earlier believed
+# Oct 31, to Oct 27, 1918 (and Sunday is a more likely transition day
+# than Thursday) in all Canadian rulesets.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Canada	1918	only	-	Apr	14	2:00	1:00	D
-Rule	Canada	1918	only	-	Oct	31	2:00	0	S
+Rule	Canada	1918	only	-	Oct	27	2:00	0	S
 Rule	Canada	1942	only	-	Feb	 9	2:00	1:00	W # War
 Rule	Canada	1945	only	-	Aug	14	23:00u	1:00	P # Peace
 Rule	Canada	1945	only	-	Sep	30	2:00	0	S
@@ -1645,7 +1662,7 @@
 Rule	Winn	1916	only	-	Apr	23	0:00	1:00	D
 Rule	Winn	1916	only	-	Sep	17	0:00	0	S
 Rule	Winn	1918	only	-	Apr	14	2:00	1:00	D
-Rule	Winn	1918	only	-	Oct	31	2:00	0	S
+Rule	Winn	1918	only	-	Oct	27	2:00	0	S
 Rule	Winn	1937	only	-	May	16	2:00	1:00	D
 Rule	Winn	1937	only	-	Sep	26	2:00	0	S
 Rule	Winn	1942	only	-	Feb	 9	2:00	1:00	W # War
@@ -1728,7 +1745,7 @@
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Regina	1918	only	-	Apr	14	2:00	1:00	D
-Rule	Regina	1918	only	-	Oct	31	2:00	0	S
+Rule	Regina	1918	only	-	Oct	27	2:00	0	S
 Rule	Regina	1930	1934	-	May	Sun>=1	0:00	1:00	D
 Rule	Regina	1930	1934	-	Oct	Sun>=1	0:00	0	S
 Rule	Regina	1937	1941	-	Apr	Sun>=8	0:00	1:00	D
@@ -1765,7 +1782,7 @@
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Edm	1918	1919	-	Apr	Sun>=8	2:00	1:00	D
-Rule	Edm	1918	only	-	Oct	31	2:00	0	S
+Rule	Edm	1918	only	-	Oct	27	2:00	0	S
 Rule	Edm	1919	only	-	May	27	2:00	0	S
 Rule	Edm	1920	1923	-	Apr	lastSun	2:00	1:00	D
 Rule	Edm	1920	only	-	Oct	lastSun	2:00	0	S
@@ -1795,9 +1812,71 @@
 # Dawson Creek uses MST.  Much of east BC is like Edmonton.
 # Matthews and Vincent (1998) write that Creston is like Dawson Creek.
 
+# It seems though that (re: Creston) is not entirely correct:
+
+# From Chris Walton (2011-12-01):
+# There are two areas within the Canadian province of British Columbia
+# that do not currently observe daylight saving:
+# a) The Creston Valley (includes the town of Creston and surrounding area)
+# b) The eastern half of the Peace River Regional District
+# (includes the cities of Dawson Creek and Fort St. John)
+
+# Earlier this year I stumbled across a detailed article about the time
+# keeping history of Creston; it was written by Tammy Hardwick who is the
+# manager of the Creston & District Museum. The article was written in May 2009.
+# <a href="http://www.ilovecreston.com/?p=articles&t=spec&ar=260">
+# http://www.ilovecreston.com/?p=articles&t=spec&ar=260
+# </a>
+# According to the article, Creston has not changed its clocks since June 1918.
+# i.e. Creston has been stuck on UTC-7 for 93 years.
+# Dawson Creek, on the other hand, changed its clocks as recently as April 1972.
+
+# Unfortunately the exact date for the time change in June 1918 remains
+# unknown and will be difficult to ascertain.  I e-mailed Tammy a few months
+# ago to ask if Sunday June 2 was a reasonable guess.  She said it was just
+# as plausible as any other date (in June).  She also said that after writing the
+# article she had discovered another time change in 1916; this is the subject
+# of another article which she wrote in October 2010.
+# <a href="http://www.creston.museum.bc.ca/index.php?module=comments&uop=view_comment&cm+id=56">
+# http://www.creston.museum.bc.ca/index.php?module=comments&uop=view_comment&cm+id=56
+# </a>
+
+# Here is a summary of the three clock change events in Creston's history:
+# 1. 1884 or 1885: adoption of Mountain Standard Time (GMT-7)
+# Exact date unknown
+# 2. Oct 1916: switch to Pacific Standard Time (GMT-8) 
+# Exact date in October unknown;  Sunday October 1 is a reasonable guess.
+# 3. June 1918: switch to Pacific Daylight Time (GMT-7)
+# Exact date in June unknown; Sunday June 2 is a reasonable guess.
+# note#1:
+# On Oct 27/1918 when daylight saving ended in the rest of Canada,
+# Creston did not change its clocks.
+# note#2:
+# During WWII when the Federal Government legislated a mandatory clock change,
+# Creston did not oblige.
+# note#3:
+# There is no guarantee that Creston will remain on Mountain Standard Time
+# (UTC-7) forever.
+# The subject was debated at least once this year by the town Council.
+# <a href="http://www.bclocalnews.com/kootenay_rockies/crestonvalleyadvance/news/116760809.html">
+# http://www.bclocalnews.com/kootenay_rockies/crestonvalleyadvance/news/116760809.html
+# </a>
+
+# During a period WWII, summer time (Daylight saying) was mandatory in Canada.
+# In Creston, that was handled by shifting the area to PST (-8:00) then applying
+# summer time to cause the offset to be -7:00, the same as it had been before
+# the change.  It can be argued that the timezone abbreviation during this
+# period should be PDT rather than MST, but that doesn't seem important enough
+# (to anyone) to further complicate the rules.
+
+# It also is not clear whether in the period after standard time was adopted
+# (1884) until 1916 whether Creston was PST or MST (-8:00 or -7:00).
+# Sources differ.   For now we will stick with MST.   The transition dates
+# are guesses.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Vanc	1918	only	-	Apr	14	2:00	1:00	D
-Rule	Vanc	1918	only	-	Oct	31	2:00	0	S
+Rule	Vanc	1918	only	-	Oct	27	2:00	0	S
 Rule	Vanc	1942	only	-	Feb	 9	2:00	1:00	W # War
 Rule	Vanc	1945	only	-	Aug	14	23:00u	1:00	P # Peace
 Rule	Vanc	1945	only	-	Sep	30	2:00	0	S
@@ -1813,7 +1892,10 @@
 			-8:00	Canada	P%sT	1947
 			-8:00	Vanc	P%sT	1972 Aug 30 2:00
 			-7:00	-	MST
-
+Zone America/Creston	-7:46:04 -	LMT	1884
+			-7:00	-	MST	1916 Oct 1
+			-8:00	-	PST	1918 Jun 2
+			-7:00	-	MST
 
 # Northwest Territories, Nunavut, Yukon
 
--- southamerica	2011/10/24 14:35:42	1.5
+++ southamerica	2012/02/26 23:31:59
@@ -1,5 +1,5 @@
 # <pre>
-# @(#)southamerica	8.52
+# @(#)southamerica	8.53
 # This file is in the public domain, so clarified as of
 # 2009-05-17 by Arthur David Olson.
 
@@ -1218,6 +1218,28 @@
 # August, not in October as they have since 1968. This is a pilot plan
 # which will be reevaluated in 2012.
 
+# From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23):
+# As stated in the website of the Chilean Energy Ministry
+# http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html
+# The Chilean Government has decided to postpone the entrance into winter time
+# (to leave DST) from March 11 2012 to April 28th 2012. The decision has not
+# been yet formalized but it will within the next days.
+# Quote from the website communication:
+#
+# 6. For the year 2012, the dates of entry into winter time will be as follows:
+# a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at
+# 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00
+# of the same day.
+# b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is,
+# at 23:59:59, instead of passing to 0:00, the time should be adjusted to be
+# 01:00 on September 2.
+#
+# Note that...this is yet another "temporary" change that will be reevaluated
+# AGAIN in 2013.
+
+# NOTE: ChileAQ rules for Antarctic bases are stored separately in the
+# 'antarctica' file.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Chile	1927	1932	-	Sep	 1	0:00	1:00	S
 Rule	Chile	1928	1932	-	Apr	 1	0:00	0	-
@@ -1248,8 +1270,6 @@
 Rule	Chile	1998	only	-	Sep	27	4:00u	1:00	S
 Rule	Chile	1999	only	-	Apr	 4	3:00u	0	-
 Rule	Chile	1999	2010	-	Oct	Sun>=9	4:00u	1:00	S
-Rule	Chile	2011	only	-	Aug	Sun>=16	4:00u	1:00	S
-Rule	Chile	2012	max	-	Oct	Sun>=9	4:00u	1:00	S
 Rule	Chile	2000	2007	-	Mar	Sun>=9	3:00u	0	-
 # N.B.: the end of March 29 in Chile is March 30 in Universal time,
 # which is used below in specifying the transition.
@@ -1257,7 +1277,11 @@
 Rule	Chile	2009	only	-	Mar	Sun>=9	3:00u	0	-
 Rule	Chile	2010	only	-	Apr	Sun>=1	3:00u	0	-
 Rule	Chile	2011	only	-	May	Sun>=2	3:00u	0	-
-Rule	Chile	2012	max	-	Mar	Sun>=9	3:00u	0	-
+Rule	Chile	2011	only	-	Aug	Sun>=16	4:00u	1:00	S
+Rule	Chile	2012	only	-	Apr	Sun>=23	3:00u	0	-
+Rule	Chile	2012	only	-	Sep	Sun>=2	4:00u	1:00	S
+Rule	Chile	2013	max	-	Mar	Sun>=9	3:00u	0	-
+Rule	Chile	2013	max	-	Oct	Sun>=9	4:00u	1:00	S
 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
 # (1996-09) says 1998-03-08.  Ignore these.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -1403,6 +1427,21 @@
 # will not revert to local mean time, but clocks will remain on Summer
 # time (UTC/GMT - 3 hours) throughout the whole of 2011.  Any long term
 # change to local time following the trial period will be notified.
+#
+# From Andrew Newman (2012-02-24)
+# A letter from Justin McPhee, Chief Executive,
+# Cable & Wireless Falkland Islands (dated 2012-02-22)
+# states...
+#   The current Atlantic/Stanley entry under South America expects the
+#   clocks to go back to standard Falklands Time (FKT) on the 15th April.
+#   The database entry states that in 2011 Stanley was staying on fixed
+#   summer time on a trial basis only.  FIG need to contact IANA and/or
+#   the maintainers of the database to inform them we're adopting
+#   the same policy this year and suggest recommendations for future years.
+#
+# For now we will assume permanent summer time for the Falklands
+# until advised differently (to apply for 2012 and beyond, after the 2011
+# experiment was apparently successful.)
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Falk	1937	1938	-	Sep	lastSun	0:00	1:00	S
 Rule	Falk	1938	1942	-	Mar	Sun>=19	0:00	0	-
@@ -1415,14 +1454,14 @@
 Rule	Falk	1985	2000	-	Sep	Sun>=9	0:00	1:00	S
 Rule	Falk	1986	2000	-	Apr	Sun>=16	0:00	0	-
 Rule	Falk	2001	2010	-	Apr	Sun>=15	2:00	0	-
-Rule	Falk	2012	max	-	Apr	Sun>=15	2:00	0	-
-Rule	Falk	2001	max	-	Sep	Sun>=1	2:00	1:00	S
+Rule	Falk	2001	2010	-	Sep	Sun>=1	2:00	1:00	S
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Atlantic/Stanley	-3:51:24 -	LMT	1890
 			-3:51:24 -	SMT	1912 Mar 12  # Stanley Mean Time
 			-4:00	Falk	FK%sT	1983 May     # Falkland Is Time
 			-3:00	Falk	FK%sT	1985 Sep 15
-			-4:00	Falk	FK%sT
+			-4:00	Falk	FK%sT	2011 Apr 16
+			-3:00	Falk	FKST
 
 # French Guiana
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
--- zone.tab	2011/10/31 06:49:46	1.4
+++ zone.tab	2012/01/06 11:56:21
@@ -1,5 +1,5 @@
 # <pre>
-# @(#)zone.tab	8.52
+# @(#)zone.tab	8.54
 # This file is in the public domain, so clarified as of
 # 2009-05-17 by Arthur David Olson.
 #
@@ -131,6 +131,7 @@
 CA	+690650-1050310	America/Cambridge_Bay	Mountain Time - west Nunavut
 CA	+6227-11421	America/Yellowknife	Mountain Time - central Northwest Territories
 CA	+682059-1334300	America/Inuvik	Mountain Time - west Northwest Territories
+CA	+4906-11631	America/Creston		Mountain Standard Time - Creston, British Columbia
 CA	+5946-12014	America/Dawson_Creek	Mountain Standard Time - Dawson Creek & Fort Saint John, British Columbia
 CA	+4916-12307	America/Vancouver	Pacific Time - west British Columbia
 CA	+6043-13503	America/Whitehorse	Pacific Time - south Yukon
@@ -333,7 +334,7 @@
 RU	+5443+02030	Europe/Kaliningrad	Moscow-01 - Kaliningrad
 RU	+5545+03735	Europe/Moscow	Moscow+00 - west Russia
 RU	+4844+04425	Europe/Volgograd	Moscow+00 - Caspian Sea
-RU	+5312+05009	Europe/Samara	Moscow - Samara, Udmurtia
+RU	+5312+05009	Europe/Samara	Moscow+00 - Samara, Udmurtia
 RU	+5651+06036	Asia/Yekaterinburg	Moscow+02 - Urals
 RU	+5500+07324	Asia/Omsk	Moscow+03 - west Siberia
 RU	+5502+08255	Asia/Novosibirsk	Moscow+03 - Novosibirsk




More information about the tz mailing list