Author: edwin
Date: Mon May 18 02:10:19 2015
New Revision: 283045
URL: https://svnweb.freebsd.org/changeset/base/283045

Log:
  MFC of 283042,tzdata8:
  
  Update to tzdata2015c:
  
      Release 2015c - 2015-04-11 08:55:55 -0700
  
      Changes affecting future time stamps
  
      Egypt's spring-forward transition is at 24:00 on April's last Thursday,
      not 00:00 on April's last Friday.  2015's transition will therefore be on
      Thursday, April 30 at 24:00, not Friday, April 24 at 00:00.  Similar fixes
      apply to 2026, 2037, 2043, etc.  (Thanks to Steffen Thorsen.)

Modified:
  stable/8/share/zoneinfo/africa
  stable/8/share/zoneinfo/antarctica
  stable/8/share/zoneinfo/backward
  stable/8/share/zoneinfo/europe
  stable/8/share/zoneinfo/northamerica
  stable/8/share/zoneinfo/southamerica
Directory Properties:
  stable/8/share/zoneinfo/   (props changed)

Modified: stable/8/share/zoneinfo/africa
==============================================================================
--- stable/8/share/zoneinfo/africa      Mon May 18 02:09:37 2015        
(r283044)
+++ stable/8/share/zoneinfo/africa      Mon May 18 02:10:19 2015        
(r283045)
@@ -319,13 +319,22 @@ Rule      Egypt   2007    only    -       Sep     Thu>=1  
24:00   
 # 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
 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
 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

Modified: stable/8/share/zoneinfo/antarctica
==============================================================================
--- stable/8/share/zoneinfo/antarctica  Mon May 18 02:09:37 2015        
(r283044)
+++ stable/8/share/zoneinfo/antarctica  Mon May 18 02:10:19 2015        
(r283045)
@@ -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
 # 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

Modified: stable/8/share/zoneinfo/backward
==============================================================================
--- stable/8/share/zoneinfo/backward    Mon May 18 02:09:37 2015        
(r283044)
+++ stable/8/share/zoneinfo/backward    Mon May 18 02:10:19 2015        
(r283045)
@@ -20,6 +20,7 @@ Link  America/Argentina/Jujuy America/Juj
 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

Modified: stable/8/share/zoneinfo/europe
==============================================================================
--- stable/8/share/zoneinfo/europe      Mon May 18 02:09:37 2015        
(r283044)
+++ stable/8/share/zoneinfo/europe      Mon May 18 02:10:19 2015        
(r283045)
@@ -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,

Modified: stable/8/share/zoneinfo/northamerica
==============================================================================
--- stable/8/share/zoneinfo/northamerica        Mon May 18 02:09:37 2015        
(r283044)
+++ stable/8/share/zoneinfo/northamerica        Mon May 18 02:10:19 2015        
(r283045)
@@ -1331,14 +1331,9 @@ Zone America/Moncton     -4:19:08 -      LMT     1883
 
 # 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
 # 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
 

Modified: stable/8/share/zoneinfo/southamerica
==============================================================================
--- stable/8/share/zoneinfo/southamerica        Mon May 18 02:09:37 2015        
(r283044)
+++ stable/8/share/zoneinfo/southamerica        Mon May 18 02:10:19 2015        
(r283045)
@@ -1098,6 +1098,60 @@ Zone America/Rio_Branco  -4:31:12 -      LMT     1
 
 # 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     1
 # 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     1
 # 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   
 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   
 # (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,
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