tzdata needs urgent update for Samoa, DST changeover on September 30
As discussed in this thread on the tzdata mailing list:
http://mm.icann.org/pipermail/tz/2012-September/018259.html
From my understanding of the situation, the government of Samoa has not
established a perpetual basis for daylight savings time changeovers,
instead issuing decrees each year since they started using DST two years
ago.
On September 4, 2012 they issued the decree for 2012-2013 and 2013-14;
daylight savings time begins on September 30 (in 4 days).
The IANA has yet to release an updated Time Zone Data file incorporating
these DST changeovers, their last release being on September 13, 2012.
However with September 30 only 4 days away it is possible that a new
tzdata will not be issued before the changeover date.
Therefore, I submit the attached patch made by Robert Elz[1] and updated
by lord.buddha[2] to be added as a quilt patch to Debian stable tzdata
2012c-0squeeze1.
My organization has Debian servers in Samoa and I have built a specially
updated tzdata package myself incorporating that patch as a stopgap measure.
Thanks,
Tim Gokcen
[1] http://mm.icann.org/pipermail/tz/2012-September/018261.html
[2] http://mm.icann.org/pipermail/tz/2012-September/018277.html
--- tzdata-2012c.orig/australasia 2012-09-26 15:58:54.152847021 -0400
+++ tzdata-2012c/australasia 2012-09-26 15:59:29.883527716 -0400
@@ -621,6 +621,25 @@
# 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.
+#
+# From Nicholas Pereira (2012-09-10):
+# Daylight Saving Time commences on Sunday 30th September 2012 and
+# ends on Sunday 7th of April 2013.
+#
+# Please find link below for more information.
+# <a href="http://www.mcil.gov.ws/mcil_publications.html";>
+# http://www.mcil.gov.ws/mcil_publications.html
+# </a>
+#
+# That publication also includes dates for Summer of 2013/2014
+# which give the impression of a pattern in selecting dates for the
+# future, so for now, we will guess this will continue
+
+# Western Samoa
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule WS 2012 max - Sep lastSun 3:00 1 D
+Rule WS 2013 max - Apr Sun>=1 4:00 0 -
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5
-11:26:56 - LMT 1911
-11:30 - SAMT 1950 # Samoa Time
@@ -629,7 +648,7 @@
-11:00 - WST 2011 Sep 24 3:00
-11:00 1:00 WSDT 2011 Dec 30
13:00 1:00 WSDT 2012 Apr 1 4:00
- 13:00 - WST
+ 13:00 WS WS%sT
# Solomon Is
# excludes Bougainville, for which see Papua New Guinea
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