6 files changed, 111 insertions, 158 deletions

diff --git a/contrib/tzdata/africa b/contrib/tzdata/africa
index 1b9bf50da22c..8b9ee6168e7d 100644
--- a/contrib/tzdata/africa
+++ b/contrib/tzdata/africa
@@ -319,13 +319,22 @@ Rule	Egypt	2007	only	-	Sep	Thu>=1	24:00	0	-
 # above) says DST had no affect on electricity consumption.  There is
 # no information about when DST will end this fall.  See:
 # http://abcnews.go.com/International/wireStory/el-sissi-pushes-egyptians-line-23614833
-#
+
+# From Steffen Thorsen (2015-04-08):
+# Egypt will start DST on midnight after Thursday, April 30, 2015.
+# This is based on a law (no 35) from May 15, 2014 saying it starts the last
+# Thursday of April....  Clocks will still be turned back for Ramadan, but
+# dates not yet announced....
+# http://almogaz.com/news/weird-news/2015/04/05/1947105 ...
+# http://www.timeanddate.com/news/time/egypt-starts-dst-2015.html
+
+# From Paul Eggert (2015-04-08):
 # For now, guess that later spring and fall transitions will use
-# 2010's rules, and guess that Egypt will switch to standard time at
+# 2014's rules, and guess that Egypt will switch to standard time at
 # 24:00 the last Thursday before Ramadan, and back to DST at 00:00 the
 # first Friday after Ramadan.  To implement this,
 # transition dates for 2015 through 2037 were determined by running
-# the following program under GNU Emacs 24.3, with the results integrated
+# the following program under GNU Emacs 24.4, with the results integrated
 # by hand into the table below.  Ramadan again intrudes on the guessed
 # DST starting in 2038, but that's beyond our somewhat-arbitrary cutoff.
 # (let ((islamic-year 1436))
@@ -357,7 +366,7 @@ Rule	Egypt	2014	only	-	May	15	24:00	1:00	S
 Rule	Egypt	2014	only	-	Jun	26	24:00	0	-
 Rule	Egypt	2014	only	-	Jul	31	24:00	1:00	S
 Rule	Egypt	2014	max	-	Sep	lastThu	24:00	0	-
-Rule	Egypt	2015	2019	-	Apr	lastFri	 0:00s	1:00	S
+Rule	Egypt	2015	2019	-	Apr	lastThu	24:00	1:00	S
 Rule	Egypt	2015	only	-	Jun	11	24:00	0	-
 Rule	Egypt	2015	only	-	Jul	23	24:00	1:00	S
 Rule	Egypt	2016	only	-	Jun	 2	24:00	0	-
@@ -371,7 +380,7 @@ Rule	Egypt	2019	only	-	Jun	 6	24:00	1:00	S
 Rule	Egypt	2020	only	-	May	28	24:00	1:00	S
 Rule	Egypt	2021	only	-	May	13	24:00	1:00	S
 Rule	Egypt	2022	only	-	May	 5	24:00	1:00	S
-Rule	Egypt	2023	max	-	Apr	lastFri	 0:00s	1:00	S
+Rule	Egypt	2023	max	-	Apr	lastThu	24:00	1:00	S
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Cairo	2:05:09 -	LMT	1900 Oct
diff --git a/contrib/tzdata/antarctica b/contrib/tzdata/antarctica
index ebae9940717c..2af088f0b987 100644
--- a/contrib/tzdata/antarctica
+++ b/contrib/tzdata/antarctica
@@ -15,41 +15,6 @@
 # I made up all time zone abbreviations mentioned here; corrections welcome!
 # FORMAT is 'zzz' and GMTOFF is 0 for locations while uninhabited.
 
-# These rules are stolen from the 'southamerica' file.
-# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	ArgAQ	1964	1966	-	Mar	 1	0:00	0	-
-Rule	ArgAQ	1964	1966	-	Oct	15	0:00	1:00	S
-Rule	ArgAQ	1967	only	-	Apr	 2	0:00	0	-
-Rule	ArgAQ	1967	1968	-	Oct	Sun>=1	0:00	1:00	S
-Rule	ArgAQ	1968	1969	-	Apr	Sun>=1	0:00	0	-
-Rule	ArgAQ	1974	only	-	Jan	23	0:00	1:00	S
-Rule	ArgAQ	1974	only	-	May	 1	0:00	0	-
-Rule	ChileAQ	1972	1986	-	Mar	Sun>=9	3:00u	0	-
-Rule	ChileAQ	1974	1987	-	Oct	Sun>=9	4:00u	1:00	S
-Rule	ChileAQ	1987	only	-	Apr	12	3:00u	0	-
-Rule	ChileAQ	1988	1989	-	Mar	Sun>=9	3:00u	0	-
-Rule	ChileAQ	1988	only	-	Oct	Sun>=1	4:00u	1:00	S
-Rule	ChileAQ	1989	only	-	Oct	Sun>=9	4:00u	1:00	S
-Rule	ChileAQ	1990	only	-	Mar	18	3:00u	0	-
-Rule	ChileAQ	1990	only	-	Sep	16	4:00u	1:00	S
-Rule	ChileAQ	1991	1996	-	Mar	Sun>=9	3:00u	0	-
-Rule	ChileAQ	1991	1997	-	Oct	Sun>=9	4:00u	1:00	S
-Rule	ChileAQ	1997	only	-	Mar	30	3:00u	0	-
-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	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	2015	-	Apr	Sun>=23	3:00u	0	-
-Rule	ChileAQ	2012	2014	-	Sep	Sun>=2	4:00u	1:00	S
-
 # Argentina - year-round bases
 # Belgrano II, Confin Coast, -770227-0343737, since 1972-02-05
 # Carlini, Potter Cove, King George Island, -6414-0602320, since 1982-01
@@ -344,21 +309,7 @@ Zone Antarctica/Rothera	0	-	zzz	1976 Dec  1
 # USA - year-round bases
 #
 # Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
-#
-# From Ethan Dicks (1996-10-06):
-# It keeps the same time as Punta Arenas, Chile, because, just like us
-# and the South Pole, that's the other end of their supply line....
-# I verified with someone who was there that since 1980,
-# Palmer has followed Chile.  Prior to that, before the Falklands War,
-# Palmer used to be supplied from Argentina.
-#
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Antarctica/Palmer	0	-	zzz	1965
-			-4:00	ArgAQ	AR%sT	1969 Oct  5
-			-3:00	ArgAQ	AR%sT	1982 May
-			-4:00	ChileAQ	CL%sT	2015 Apr 26 3:00u
-			-3:00	-	CLT
-#
+# See 'southamerica' for Antarctica/Palmer, since it uses South American DST.
 #
 # McMurdo Station, Ross Island, since 1955-12
 # Amundsen-Scott South Pole Station, continuously occupied since 1956-11-20
diff --git a/contrib/tzdata/backward b/contrib/tzdata/backward
index 3ceda884bdcf..8b0fef5825a9 100644
--- a/contrib/tzdata/backward
+++ b/contrib/tzdata/backward
@@ -20,6 +20,7 @@ Link	America/Argentina/Jujuy	America/Jujuy
 Link	America/Indiana/Knox	America/Knox_IN
 Link	America/Kentucky/Louisville	America/Louisville
 Link	America/Argentina/Mendoza	America/Mendoza
+Link	America/Toronto		America/Montreal
 Link	America/Rio_Branco	America/Porto_Acre
 Link	America/Argentina/Cordoba	America/Rosario
 Link	America/Denver		America/Shiprock
diff --git a/contrib/tzdata/europe b/contrib/tzdata/europe
index 41097234fda2..c64c41bec952 100644
--- a/contrib/tzdata/europe
+++ b/contrib/tzdata/europe
@@ -76,7 +76,7 @@
 #        1:00:14    SET           Swedish (1879-1899)*
 #        2:00       EET EEST      Eastern Europe
 #        3:00       FET           Further-eastern Europe (2011-2014)*
-#        3:00       MSK MSD  MSM* Moscow
+#        3:00       MSK MSD  MSM* Minsk, Moscow
 
 # From Peter Ilieve (1994-12-04),
 # The original six [EU members]: Belgium, France, (West) Germany, Italy,
diff --git a/contrib/tzdata/northamerica b/contrib/tzdata/northamerica
index 77463dab447c..debc7dcdabbe 100644
--- a/contrib/tzdata/northamerica
+++ b/contrib/tzdata/northamerica
@@ -1331,14 +1331,9 @@ Zone America/Moncton	-4:19:08 -	LMT	1883 Dec  9
 
 # Quebec
 
-# From Paul Eggert (2013-08-30):
-# Since 1970 most of Quebec has been like Toronto.
-# However, because earlier versions of the tz database mistakenly relied on data
-# from Shanks & Pottenger saying that Quebec differed from Ontario after 1970,
-# a separate entry was created for most of Quebec.  We're loath to lose
-# its pre-1970 info, even though the tz database is normally limited to
-# zones that differ after 1970, so keep this otherwise out-of-scope entry.
-
+# From Paul Eggert (2015-03-24):
+# See America/Toronto for most of Quebec, including Montreal.
+#
 # Matthews and Vincent (1998) also write that Quebec east of the -63
 # meridian is supposed to observe AST, but residents as far east as
 # Natashquan use EST/EDT, and residents east of Natashquan use AST.
@@ -1352,39 +1347,10 @@ Zone America/Moncton	-4:19:08 -	LMT	1883 Dec  9
 # For lack of better info, guess this practice began around 1970, contra to
 # Shanks & Pottenger who have this region observing AST/ADT.
 
-# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	Mont	1917	only	-	Mar	25	2:00	1:00	D
-Rule	Mont	1917	only	-	Apr	24	0:00	0	S
-Rule	Mont	1919	only	-	Mar	31	2:30	1:00	D
-Rule	Mont	1919	only	-	Oct	25	2:30	0	S
-Rule	Mont	1920	only	-	May	 2	2:30	1:00	D
-Rule	Mont	1920	1922	-	Oct	Sun>=1	2:30	0	S
-Rule	Mont	1921	only	-	May	 1	2:00	1:00	D
-Rule	Mont	1922	only	-	Apr	30	2:00	1:00	D
-Rule	Mont	1924	only	-	May	17	2:00	1:00	D
-Rule	Mont	1924	1926	-	Sep	lastSun	2:30	0	S
-Rule	Mont	1925	1926	-	May	Sun>=1	2:00	1:00	D
-Rule	Mont	1927	1937	-	Apr	lastSat	24:00	1:00	D
-Rule	Mont	1927	1937	-	Sep	lastSat	24:00	0	S
-Rule	Mont	1938	1940	-	Apr	lastSun	0:00	1:00	D
-Rule	Mont	1938	1939	-	Sep	lastSun	0:00	0	S
-Rule	Mont	1946	1973	-	Apr	lastSun	2:00	1:00	D
-Rule	Mont	1945	1948	-	Sep	lastSun	2:00	0	S
-Rule	Mont	1949	1950	-	Oct	lastSun	2:00	0	S
-Rule	Mont	1951	1956	-	Sep	lastSun	2:00	0	S
-Rule	Mont	1957	1973	-	Oct	lastSun	2:00	0	S
-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Blanc-Sablon -3:48:28 -	LMT	1884
 			-4:00	Canada	A%sT	1970
 			-4:00	-	AST
-Zone America/Montreal	-4:54:16 -	LMT	1884
-			-5:00	Mont	E%sT	1918
-			-5:00	Canada	E%sT	1919
-			-5:00	Mont	E%sT	1942 Feb  9  2:00s
-			-5:00	Canada	E%sT	1946
-			-5:00	Mont	E%sT	1974
-			-5:00	Canada	E%sT
 
 # Ontario
 
diff --git a/contrib/tzdata/southamerica b/contrib/tzdata/southamerica
index 77e3584b2754..be63a88d5f3d 100644
--- a/contrib/tzdata/southamerica
+++ b/contrib/tzdata/southamerica
@@ -1098,6 +1098,60 @@ Zone America/Rio_Branco	-4:31:12 -	LMT	1914
 
 # Chile
 
+# From Paul Eggert (2015-04-03):
+# Shanks & Pottenger says America/Santiago introduced standard time in
+# 1890 and rounds its UTC offset to 70W40; guess that in practice this
+# was the same offset as in 1916-1919.  It also says Pacific/Easter
+# standardized on 109W22 in 1890; assume this didn't change the clocks.
+#
+# Dates for America/Santiago from 1910 to 2004 are primarily from
+# the following source, cited by Oscar van Vlijmen (2006-10-08):
+# [1] Chile Law
+# http://www.webexhibits.org/daylightsaving/chile.html
+# This contains a copy of a this official table:
+# Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30)
+# http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm
+# [1] needs several corrections, though.
+#
+# The first set of corrections is from:
+# [2] History of the Official Time of Chile
+# http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06).  See:
+# http://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html
+# This is an English translation of:
+# Historia de la hora oficial de Chile (retrieved 2012-10-24).  See:
+# http://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm
+# A fancier Spanish version (requiring mouse-clicking) is at:
+# http://www.horaoficial.cl/historia_hora.html
+# Conflicts between [1] and [2] were resolved as follows:
+#
+#  - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites
+#    Boletín Nº 1, Aviso Nº 1 (1910).  Go with [2].
+#
+#  - [1] says SMT was -4:42:45, [2] says Chile's official time from
+#    1916 to 1919 was -4:42:46.3, the meridian of Chile's National
+#    Astronomical Observatory (OAN), then located in what is now
+#    Quinta Normal in Santiago.  Go with [2], rounding it to -4:42:46.
+#
+#  - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites
+#    Boletín Nº 22, Aviso Nº 129/1918 (1918-08-23).  Go with [2].
+#
+#  - [1] does not give times for transitions; assume they occur
+#    at midnight mainland time, the current common practice.  However,
+#    go with [2]'s specification of 23:00 for the 1947-05-21 transition.
+#
+# Another correction to [1] is from Jesper Nørgaard Welen, who
+# wrote (2006-10-08), "I think that there are some obvious mistakes in
+# the suggested link from Oscar van Vlijmen,... for instance entry 66
+# says that GMT-4 ended 1990-09-12 while entry 67 only begins GMT-3 at
+# 1990-09-15 (they should have been 1990-09-15 and 1990-09-16
+# respectively), but anyhow it clears up some doubts too."
+#
+# Data for Pacific/Easter from 1910 through 1967 come from Shanks &
+# Pottenger.  After that, for lack of better info assume
+# Pacific/Easter is always two hours behind America/Santiago;
+# this is known to work for DST transitions starting in 2008 and
+# may well be true for earlier transitions.
+
 # From Eduardo Krell (1995-10-19):
 # The law says to switch to DST at midnight [24:00] on the second SATURDAY
 # of October....  The law is the same for March and October.
@@ -1110,78 +1164,35 @@ Zone America/Rio_Branco	-4:31:12 -	LMT	1914
 # Because of the same drought, the government decided to end DST later,
 # on April 3, (one-time change).
 
-# From Oscar van Vlijmen (2006-10-08):
-# http://www.horaoficial.cl/cambio.htm
-
-# From Jesper Nørgaard Welen (2006-10-08):
-# I think that there are some obvious mistakes in the suggested link
-# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4
-# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15
-# (they should have been 1990-09-15 and 1990-09-16 respectively), but
-# anyhow it clears up some doubts too.
-
-# From Paul Eggert (2014-08-12):
-# The following data entries for Chile and America/Santiago are from
-# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by
-# Jesper Nørgaard Welen.  The data entries for Pacific/Easter are from Shanks
-# & Pottenger, except with DST transitions after 1932 cloned from
-# America/Santiago.  The pre-1980 Pacific/Easter data entries are dubious,
-# but we have no other source.
-
 # From Germán Poo-Caamaño (2008-03-03):
 # Due to drought, Chile extends Daylight Time in three weeks.  This
 # is one-time change (Saturday 3/29 at 24:00 for America/Santiago
 # and Saturday 3/29 at 22:00 for Pacific/Easter)
 # The Supreme Decree is located at
 # http://www.shoa.cl/servicios/supremo316.pdf
-# and the instructions for 2008 are located in:
-# http://www.horaoficial.cl/cambio.htm
-
+#
 # From José Miguel Garrido (2008-03-05):
-# ...
-# You could see the announces of the change on
 # http://www.shoa.cl/noticias/2008/04hora/hora.htm
 
 # From Angel Chiang (2010-03-04):
 # Subject: DST in Chile exceptionally extended to 3 April due to earthquake
 # http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098
-# (in Spanish, last paragraph).
 #
-# This is breaking news. There should be more information available later.
-
 # From Arthur David Olson (2010-03-06):
 # Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch.
 
-# From Glenn Eychaner (2011-03-02):
-# It appears that the Chilean government has decided to postpone the
-# change from summer time to winter time again, by three weeks to April
-# 2nd:
-# http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651
-#
-# This is not yet reflected in the official "cambio de hora" site, but
-# probably will be soon:
-# http://www.horaoficial.cl/cambio.htm
-
-# From Arthur David Olson (2011-03-02):
-# The emol.com article mentions a water shortage as the cause of the
-# postponement, which may mean that it's not a permanent change.
-
 # From Glenn Eychaner (2011-03-28):
-# The article:
 # http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}
-#
 # In English:
 # Chile's clocks will go back an hour this year on the 7th of May instead
 # of this Saturday. They will go forward again the 3rd Saturday in
-# August, not in October as they have since 1968. This is a pilot plan
-# which will be reevaluated in 2012.
+# August, not in October as they have since 1968.
 
 # 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.
+# (to leave DST) from March 11 2012 to April 28th 2012....
 # Quote from the website communication:
 #
 # 6. For the year 2012, the dates of entry into winter time will be as follows:
@@ -1214,17 +1225,9 @@ Zone America/Rio_Branco	-4:31:12 -	LMT	1914
 # From Paul Eggert (2015-03-03):
 # For now, assume that the extension will persist indefinitely.
 
-# 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	1927	1931	-	Sep	 1	0:00	1:00	S
 Rule	Chile	1928	1932	-	Apr	 1	0:00	0	-
-Rule	Chile	1942	only	-	Jun	 1	4:00u	0	-
-Rule	Chile	1942	only	-	Aug	 1	5:00u	1:00	S
-Rule	Chile	1946	only	-	Jul	15	4:00u	1:00	S
-Rule	Chile	1946	only	-	Sep	 1	3:00u	0:00	-
-Rule	Chile	1947	only	-	Apr	 1	4:00u	0	-
 Rule	Chile	1968	only	-	Nov	 3	4:00u	1:00	S
 Rule	Chile	1969	only	-	Mar	30	3:00u	0	-
 Rule	Chile	1969	only	-	Nov	23	4:00u	1:00	S
@@ -1235,10 +1238,8 @@ Rule	Chile	1972	1986	-	Mar	Sun>=9	3:00u	0	-
 Rule	Chile	1973	only	-	Sep	30	4:00u	1:00	S
 Rule	Chile	1974	1987	-	Oct	Sun>=9	4:00u	1:00	S
 Rule	Chile	1987	only	-	Apr	12	3:00u	0	-
-Rule	Chile	1988	1989	-	Mar	Sun>=9	3:00u	0	-
-Rule	Chile	1988	only	-	Oct	Sun>=1	4:00u	1:00	S
-Rule	Chile	1989	only	-	Oct	Sun>=9	4:00u	1:00	S
-Rule	Chile	1990	only	-	Mar	18	3:00u	0	-
+Rule	Chile	1988	1990	-	Mar	Sun>=9	3:00u	0	-
+Rule	Chile	1988	1989	-	Oct	Sun>=9	4:00u	1:00	S
 Rule	Chile	1990	only	-	Sep	16	4:00u	1:00	S
 Rule	Chile	1991	1996	-	Mar	Sun>=9	3:00u	0	-
 Rule	Chile	1991	1997	-	Oct	Sun>=9	4:00u	1:00	S
@@ -1261,15 +1262,21 @@ Rule	Chile	2012	2014	-	Sep	Sun>=2	4:00u	1:00	S
 # (1996-09) says 1998-03-08.  Ignore these.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Santiago	-4:42:46 -	LMT	1890
-			-4:42:46 -	SMT	1910        # Santiago Mean Time
+			-4:42:46 -	SMT	1910 Jan 10 # Santiago Mean Time
 			-5:00	-	CLT	1916 Jul  1 # Chile Time
-			-4:42:46 -	SMT	1918 Sep  1 # Santiago Mean Time
-			-4:00	-	CLT	1919 Jul  1 # Chile Time
-			-4:42:46 -	SMT	1927 Sep  1 # Santiago Mean Time
-			-5:00	Chile	CL%sT	1947 May 22 # Chile Time
+			-4:42:46 -	SMT	1918 Sep 10
+			-4:00	-	CLT	1919 Jul  1
+			-4:42:46 -	SMT	1927 Sep  1
+			-5:00	Chile	CL%sT	1932 Sep  1
+			-4:00	-	CLT	1942 Jun  1
+			-5:00	-	CLT	1942 Aug  1
+			-4:00	-	CLT	1946 Jul 15
+			-4:00	1:00	CLST	1946 Sep  1 # central Chile
+			-4:00	-	CLT	1947 Apr  1
+			-5:00	-	CLT	1947 May 21 23:00
 			-4:00	Chile	CL%sT	2015 Apr 26  3:00u
 			-3:00	-	CLT
-Zone Pacific/Easter	-7:17:44 -	LMT	1890
+Zone Pacific/Easter	-7:17:28 -	LMT	1890
 			-7:17:28 -	EMT	1932 Sep    # Easter Mean Time
 			-7:00	Chile	EAS%sT	1982 Mar 14 3:00u # Easter Time
 			-6:00	Chile	EAS%sT	2015 Apr 26 3:00u
@@ -1279,6 +1286,25 @@ Zone Pacific/Easter	-7:17:44 -	LMT	1890
 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
 # and Antarctic bases, are like America/Santiago.
 
+# Antarctic base using South American rules
+# (See the file 'antarctica' for more.)
+#
+# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
+#
+# From Ethan Dicks (1996-10-06):
+# It keeps the same time as Punta Arenas, Chile, because, just like us
+# and the South Pole, that's the other end of their supply line....
+# I verified with someone who was there that since 1980,
+# Palmer has followed Chile.  Prior to that, before the Falklands War,
+# Palmer used to be supplied from Argentina.
+#
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone Antarctica/Palmer	0	-	zzz	1965
+			-4:00	Arg	AR%sT	1969 Oct  5
+			-3:00	Arg	AR%sT	1982 May
+			-4:00	Chile	CL%sT	2015 Apr 26 3:00u
+			-3:00	-	CLT
+
 # Colombia
 
 # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest.  He writes,