make/sun/javazic/tzdata/southamerica

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@@ -25,17 +25,21 @@
 # This file is in the public domain, so clarified as of
 # 2009-05-17 by Arthur David Olson.
 
 # This data is by no means authoritative; if you think you know better,
 # go ahead and edit the file (and please send any changes to
-# tz@elsie.nci.nih.gov for general use in the future).
+# tz@iana.org for general use in the future).
 
 # From Paul Eggert (2006-03-22):
 # A good source for time zone historical data outside the U.S. is
 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
 # San Diego: ACS Publications, Inc. (2003).
 #
+# For data circa 1899, a common source is:
+# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94
+# <http://www.jstor.org/stable/1774359>.
+#
 # Gwillim Law writes that a good source
 # for recent time zone data is the International Air Transport
 # Association's Standard Schedules Information Manual (IATA SSIM),
 # published semiannually.  Law sent in several helpful summaries
 # of the IATA's data after 1990.

@@ -402,25 +406,15 @@
 # <a href="http://www.sanluis.gov.ar">
 # www.sanluis.gov.ar
 # <a/>
 # is the official page for the Province Government).
 #
-# There's also a note in only one of the major national papers (La Nación) at
-# <a href="http://www.lanacion.com.ar/nota.asp?nota_id=1107912">
+# There's also a note in only one of the major national papers ...
 # http://www.lanacion.com.ar/nota.asp?nota_id=1107912
-# </a>
 #
-# The press release says:
-#  (...) anunció que el próximo domingo a las 00:00 los puntanos deberán
-# atrasar una hora sus relojes.
-#
-# A partir de entonces, San Luis establecerá el huso horario propio de
-# la Provincia. De esta manera, durante el periodo del calendario anual
-# 2009, el cambio horario quedará comprendido entre las 00:00 del tercer
-# domingo de marzo y las 24:00 del segundo sábado de octubre.
-# Quick&dirty translation
-# (...) announced that next Sunday, at 00:00, Puntanos (the San Luis
+# The press release says [quick and dirty translation]:
+# ... announced that next Sunday, at 00:00, Puntanos (the San Luis
 # inhabitants) will have to turn back one hour their clocks
 #
 # Since then, San Luis will establish its own Province timezone. Thus,
 # during 2009, this timezone change will run from 00:00 the third Sunday
 # in March until 24:00 of the second Saturday in October.

@@ -478,10 +472,13 @@
 # yes...I can confirm this...and given that San Luis keeps calling
 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"
 # rules...San Luis is still using "Western ARgentina Time" and it got
 # stuck on Summer daylight savings time even though the summer is over.
 
+# From Paul Eggert (2013-02-21):
+# Milne says Cordoba time was -4:16:48.2.  Round to the nearest second.
+
 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 #
 # Buenos Aires (BA), Capital Federal (CF),
 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
                         -4:16:48 -      CMT     1920 May # Cordoba Mean Time

@@ -833,13 +830,13 @@
 # http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html
 # </a>
 
 # From Guilherme Bernardes Rodrigues (2011-10-07):
 # There is news in the media, however there is still no decree about it.
-# I just send a e-mail to Zulmira Brandão at
+# I just send a e-mail to Zulmira Brandao at
 # <a href="http://pcdsh01.on.br/">http://pcdsh01.on.br/</a> the
-# oficial agency about time in Brazil, and she confirmed that the old rule is
+# official agency about time in Brazil, and she confirmed that the old rule is
 # still in force.
 
 # From Guilherme Bernardes Rodrigues (2011-10-14)
 # It's official, the President signed a decree that includes Bahia in summer
 # time.

@@ -1264,13 +1261,17 @@
 # 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.
+
+# From Steffen Thorsen (2013-02-15):
+# According to several news sources, Chile has extended DST this year,
+# they will end DST later and start DST earlier than planned.  They
+# hope to save energy.  The new end date is 2013-04-28 00:00 and new
+# start date is 2013-09-08 00:00....
+# http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm
 
 # NOTE: ChileAQ rules for Antarctic bases are stored separately in the
 # 'antarctica' file.
 
 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S

@@ -1309,14 +1310,12 @@
 Rule    Chile   2008    only    -       Mar     30      3:00u   0       -
 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   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
+Rule    Chile   2012    max     -       Apr     Sun>=23 3:00u   0       -
+Rule    Chile   2012    max     -       Sep     Sun>=2  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]
 Zone America/Santiago   -4:42:46 -      LMT     1890
                         -4:42:46 -      SMT     1910        # Santiago Mean Time

@@ -1334,21 +1333,27 @@
 # Sala y Gomez Island is like Pacific/Easter.
 # Other Chilean locations, including Juan Fernandez Is, San Ambrosio,
 # San Felix, and Antarctic bases, are like America/Santiago.
 
 # Colombia
+
+# Milne gives 4:56:16.4 for Bogota time in 1899; round to nearest.  He writes,
+# "A variation of fifteen minutes in the public clocks of Bogota is not rare."
+
 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
 Rule    CO      1992    only    -       May      3      0:00    1:00    S
 Rule    CO      1993    only    -       Apr      4      0:00    0       -
 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
-Zone    America/Bogota  -4:56:20 -      LMT     1884 Mar 13
-                        -4:56:20 -      BMT     1914 Nov 23 # Bogota Mean Time
+Zone    America/Bogota  -4:56:16 -      LMT     1884 Mar 13
+                        -4:56:16 -      BMT     1914 Nov 23 # Bogota Mean Time
                         -5:00   CO      CO%sT   # Colombia Time
 # Malpelo, Providencia, San Andres
 # no information; probably like America/Bogota
 
 # Curacao
+
+# Milne gives 4:35:46.9 for Curacao mean time; round to nearest.
 #
 # From Paul Eggert (2006-03-22):
 # Shanks & Pottenger say that The Bottom and Philipsburg have been at
 # -4:00 since standard time was introduced on 1912-03-02; and that
 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from

@@ -1361,11 +1366,11 @@
 # Bonaire, Saba and St Eustatius would become directly part of the
 # Netherlands as Kingdom Islands.  This won't affect their time zones
 # though, as far as we know.
 #
 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
-Zone    America/Curacao -4:35:44 -      LMT     1912 Feb 12     # Willemstad
+Zone    America/Curacao -4:35:47 -      LMT     1912 Feb 12     # Willemstad
                         -4:30   -       ANT     1965 # Netherlands Antilles Time
                         -4:00   -       AST
 
 # From Arthur David Olson (2011-06-15):
 # At least for now, use links for places with new iso3166 codes.

@@ -1375,10 +1380,12 @@
 Link    America/Curacao America/Lower_Princes # Sint Maarten
 Link    America/Curacao America/Kralendijk # Bonaire, Sint Estatius and Saba
 
 # Ecuador
 #
+# Milne says the Sentral and South American Telegraph Company used -5:24:15.
+#
 # From Paul Eggert (2007-03-04):
 # Apparently Ecuador had a failed experiment with DST in 1992.
 # <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and
 # <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both
 # talk about "hora Sixto".  Leave this alone for now, as we have no data.

@@ -1580,11 +1587,20 @@
 # April of this year (2010), the official time is to be set back 60 minutes,
 # and that on the first Sunday of the month of October, it is to be set
 # forward 60 minutes, in all the territory of the Paraguayan Republic.
 # ...
 Rule    Para    2010    max     -       Oct     Sun>=1  0:00    1:00    S
-Rule    Para    2010    max     -       Apr     Sun>=8  0:00    0       -
+Rule    Para    2010    2012    -       Apr     Sun>=8  0:00    0       -
+#
+# From Steffen Thorsen (2013-03-07):
+# Paraguay will end DST on 2013-03-24 00:00....
+# http://www.ande.gov.py/interna.php?id=1075
+#
+# From Carlos Raul Perasso (2013-03-15):
+# The change in Paraguay is now final.  Decree number 10780
+# http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf
+Rule    Para    2013    max     -       Mar     Sun>=22 0:00    0       -
 
 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 Zone America/Asuncion   -3:50:40 -      LMT     1890
                         -3:50:40 -      AMT     1931 Oct 10 # Asuncion Mean Time
                         -4:00   -       PYT     1972 Oct # Paraguay Time