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8147 Update zoneinfo to 2017b
        
*** 4,57 ****
  # This file is by no means authoritative; if you think you know better,
  # go ahead and edit the file (and please send any changes to
  # tz@iana.org for general use in the future).  For more, please see
  # the file CONTRIBUTING in the tz distribution.
  
! # From Paul Eggert (2014-10-31):
  #
  # Unless otherwise specified, the source for data through 1990 is:
  # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
  # San Diego: ACS Publications, Inc. (2003).
  # Unfortunately this book contains many errors and cites no sources.
  #
! # 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.  Except where otherwise noted,
  # IATA SSIM is the source for entries after 1990.
  #
  # 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
  #
! # Earlier editions of these tables used the North American style (e.g. ARST and
! # ARDT for Argentine Standard and Daylight Time), but the following quote
! # suggests that it's better to use European style (e.g. ART and ARST).
! #       I suggest the use of _Summer time_ instead of the more cumbersome
! #       _daylight-saving time_.  _Summer time_ seems to be in general use
! #       in Europe and South America.
! #       -- E O Cutler, _New York Times_ (1937-02-14), quoted in
! #       H L Mencken, _The American Language: Supplement I_ (1960), p 466
! #
! # Earlier editions of these tables also used the North American style
! # for time zones in Brazil, but this was incorrect, as Brazilians say
! # "summer time".  Reinaldo Goulart, a São Paulo businessman active in
! # the railroad sector, writes (1999-07-06):
! #       The subject of time zones is currently a matter of discussion/debate in
! #       Brazil.  Let's say that "the Brasília time" is considered the
! #       "official time" because Brasília is the capital city.
! #       The other three time zones are called "Brasília time "minus one" or
! #       "plus one" or "plus two".  As far as I know there is no such
! #       name/designation as "Eastern Time" or "Central Time".
! # So I invented the following (English-language) abbreviations for now.
! # Corrections are welcome!
! #               std     dst
! #       -2:00   FNT     FNST    Fernando de Noronha
! #       -3:00   BRT     BRST    Brasília
! #       -4:00   AMT     AMST    Amazon
! #       -5:00   ACT     ACST    Acre
  
  ###############################################################################
  
  ###############################################################################
  
--- 4,35 ----
  # This file is by no means authoritative; if you think you know better,
  # go ahead and edit the file (and please send any changes to
  # tz@iana.org for general use in the future).  For more, please see
  # the file CONTRIBUTING in the tz distribution.
  
! # From Paul Eggert (2016-12-05):
  #
  # Unless otherwise specified, the source for data through 1990 is:
  # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
  # San Diego: ACS Publications, Inc. (2003).
  # Unfortunately this book contains many errors and cites no sources.
  #
! # Many years ago Gwillim Law wrote that a good source
! # for time zone data was 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.  Except where otherwise noted,
  # IATA SSIM is the source for entries after 1990.
  #
  # 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
  #
! # These tables use numeric abbreviations like -03 and -0330 for
! # integer hour and minute UTC offsets.  Although earlier editions used
! # alphabetic time zone abbreviations, these abbreviations were
! # invented and did not reflect common practice.
  
  ###############################################################################
  
  ###############################################################################
  
*** 382,397 ****
  # In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday
  # (October 11th) at 0:00.
  #
  # So I guess a new set of rules, besides "Arg", must be made and the last
  # America/Argentina/San_Luis entries should change to use these...
- #
- # I'm enclosing a patch that does what I say... regretfully, the San Luis
- # timezone must be called "WART/WARST" even when most of the time (like,
- # right now) WARST == ART... that is, since last Sunday, all the country
- # is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest
- # of the country calls it "ART".
  # ...
  
  # From Alexander Krivenyshev (2010-04-09):
  # According to news reports from El Diario de la República Province San
  # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time
--- 360,369 ----
*** 426,440 ****
  # 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    # Córdoba Mean Time
!                         -4:00   -       ART     1930 Dec
!                         -4:00   Arg     AR%sT   1969 Oct  5
!                         -3:00   Arg     AR%sT   1999 Oct  3
!                         -4:00   Arg     AR%sT   2000 Mar  3
!                         -3:00   Arg     AR%sT
  #
  # Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN),
  # Chaco (CC), Formosa (FM), Santiago del Estero (SE)
  #
  # Shanks & Pottenger also make the following claims, which we haven't verified:
--- 398,412 ----
  # 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    # Córdoba Mean Time
!                         -4:00   -       -04     1930 Dec
!                         -4:00   Arg     -04/-03 1969 Oct  5
!                         -3:00   Arg     -03/-02 1999 Oct  3
!                         -4:00   Arg     -04/-03 2000 Mar  3
!                         -3:00   Arg     -03/-02
  #
  # Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN),
  # Chaco (CC), Formosa (FM), Santiago del Estero (SE)
  #
  # Shanks & Pottenger also make the following claims, which we haven't verified:
*** 444,616 ****
  # - Santiago del Estero switched to -4:00 on 1991-04-01,
  #   then to -3:00 on 1991-04-26.
  #
  Zone America/Argentina/Cordoba -4:16:48 - LMT   1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       ART     1930 Dec
!                         -4:00   Arg     AR%sT   1969 Oct  5
!                         -3:00   Arg     AR%sT   1991 Mar  3
!                         -4:00   -       WART    1991 Oct 20
!                         -3:00   Arg     AR%sT   1999 Oct  3
!                         -4:00   Arg     AR%sT   2000 Mar  3
!                         -3:00   Arg     AR%sT
  #
  # Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN)
  Zone America/Argentina/Salta -4:21:40 - LMT     1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       ART     1930 Dec
!                         -4:00   Arg     AR%sT   1969 Oct  5
!                         -3:00   Arg     AR%sT   1991 Mar  3
!                         -4:00   -       WART    1991 Oct 20
!                         -3:00   Arg     AR%sT   1999 Oct  3
!                         -4:00   Arg     AR%sT   2000 Mar  3
!                         -3:00   Arg     AR%sT   2008 Oct 18
!                         -3:00   -       ART
  #
  # Tucumán (TM)
  Zone America/Argentina/Tucuman -4:20:52 - LMT   1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       ART     1930 Dec
!                         -4:00   Arg     AR%sT   1969 Oct  5
!                         -3:00   Arg     AR%sT   1991 Mar  3
!                         -4:00   -       WART    1991 Oct 20
!                         -3:00   Arg     AR%sT   1999 Oct  3
!                         -4:00   Arg     AR%sT   2000 Mar  3
!                         -3:00   -       ART     2004 Jun  1
!                         -4:00   -       WART    2004 Jun 13
!                         -3:00   Arg     AR%sT
  #
  # La Rioja (LR)
  Zone America/Argentina/La_Rioja -4:27:24 - LMT  1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       ART     1930 Dec
!                         -4:00   Arg     AR%sT   1969 Oct  5
!                         -3:00   Arg     AR%sT   1991 Mar  1
!                         -4:00   -       WART    1991 May  7
!                         -3:00   Arg     AR%sT   1999 Oct  3
!                         -4:00   Arg     AR%sT   2000 Mar  3
!                         -3:00   -       ART     2004 Jun  1
!                         -4:00   -       WART    2004 Jun 20
!                         -3:00   Arg     AR%sT   2008 Oct 18
!                         -3:00   -       ART
  #
  # San Juan (SJ)
  Zone America/Argentina/San_Juan -4:34:04 - LMT  1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       ART     1930 Dec
!                         -4:00   Arg     AR%sT   1969 Oct  5
!                         -3:00   Arg     AR%sT   1991 Mar  1
!                         -4:00   -       WART    1991 May  7
!                         -3:00   Arg     AR%sT   1999 Oct  3
!                         -4:00   Arg     AR%sT   2000 Mar  3
!                         -3:00   -       ART     2004 May 31
!                         -4:00   -       WART    2004 Jul 25
!                         -3:00   Arg     AR%sT   2008 Oct 18
!                         -3:00   -       ART
  #
  # Jujuy (JY)
  Zone America/Argentina/Jujuy -4:21:12 - LMT     1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       ART     1930 Dec
!                         -4:00   Arg     AR%sT   1969 Oct  5
!                         -3:00   Arg     AR%sT   1990 Mar  4
!                         -4:00   -       WART    1990 Oct 28
!                         -4:00   1:00    WARST   1991 Mar 17
!                         -4:00   -       WART    1991 Oct  6
!                         -3:00   1:00    ARST    1992
!                         -3:00   Arg     AR%sT   1999 Oct  3
!                         -4:00   Arg     AR%sT   2000 Mar  3
!                         -3:00   Arg     AR%sT   2008 Oct 18
!                         -3:00   -       ART
  #
  # Catamarca (CT), Chubut (CH)
  Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       ART     1930 Dec
!                         -4:00   Arg     AR%sT   1969 Oct  5
!                         -3:00   Arg     AR%sT   1991 Mar  3
!                         -4:00   -       WART    1991 Oct 20
!                         -3:00   Arg     AR%sT   1999 Oct  3
!                         -4:00   Arg     AR%sT   2000 Mar  3
!                         -3:00   -       ART     2004 Jun  1
!                         -4:00   -       WART    2004 Jun 20
!                         -3:00   Arg     AR%sT   2008 Oct 18
!                         -3:00   -       ART
  #
  # Mendoza (MZ)
  Zone America/Argentina/Mendoza -4:35:16 - LMT   1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       ART     1930 Dec
!                         -4:00   Arg     AR%sT   1969 Oct  5
!                         -3:00   Arg     AR%sT   1990 Mar  4
!                         -4:00   -       WART    1990 Oct 15
!                         -4:00   1:00    WARST   1991 Mar  1
!                         -4:00   -       WART    1991 Oct 15
!                         -4:00   1:00    WARST   1992 Mar  1
!                         -4:00   -       WART    1992 Oct 18
!                         -3:00   Arg     AR%sT   1999 Oct  3
!                         -4:00   Arg     AR%sT   2000 Mar  3
!                         -3:00   -       ART     2004 May 23
!                         -4:00   -       WART    2004 Sep 26
!                         -3:00   Arg     AR%sT   2008 Oct 18
!                         -3:00   -       ART
  #
  # San Luis (SL)
  
  Rule    SanLuis 2008    2009    -       Mar     Sun>=8  0:00    0       -
  Rule    SanLuis 2007    2008    -       Oct     Sun>=8  0:00    1:00    S
  
  Zone America/Argentina/San_Luis -4:25:24 - LMT  1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       ART     1930 Dec
!                         -4:00   Arg     AR%sT   1969 Oct  5
!                         -3:00   Arg     AR%sT   1990
!                         -3:00   1:00    ARST    1990 Mar 14
!                         -4:00   -       WART    1990 Oct 15
!                         -4:00   1:00    WARST   1991 Mar  1
!                         -4:00   -       WART    1991 Jun  1
!                         -3:00   -       ART     1999 Oct  3
!                         -4:00   1:00    WARST   2000 Mar  3
!                         -3:00   -       ART     2004 May 31
!                         -4:00   -       WART    2004 Jul 25
!                         -3:00   Arg     AR%sT   2008 Jan 21
!                         -4:00   SanLuis WAR%sT  2009 Oct 11
!                         -3:00   -       ART
  #
  # Santa Cruz (SC)
  Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT      1894 Oct 31
!                         -4:16:48 -      CMT     1920 May    # Córdoba Mean Time
!                         -4:00   -       ART     1930 Dec
!                         -4:00   Arg     AR%sT   1969 Oct  5
!                         -3:00   Arg     AR%sT   1999 Oct  3
!                         -4:00   Arg     AR%sT   2000 Mar  3
!                         -3:00   -       ART     2004 Jun  1
!                         -4:00   -       WART    2004 Jun 20
!                         -3:00   Arg     AR%sT   2008 Oct 18
!                         -3:00   -       ART
  #
  # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF)
  Zone America/Argentina/Ushuaia -4:33:12 - LMT   1894 Oct 31
!                         -4:16:48 -      CMT     1920 May    # Córdoba Mean Time
!                         -4:00   -       ART     1930 Dec
!                         -4:00   Arg     AR%sT   1969 Oct  5
!                         -3:00   Arg     AR%sT   1999 Oct  3
!                         -4:00   Arg     AR%sT   2000 Mar  3
!                         -3:00   -       ART     2004 May 30
!                         -4:00   -       WART    2004 Jun 20
!                         -3:00   Arg     AR%sT   2008 Oct 18
!                         -3:00   -       ART
  
  # Aruba
  Link America/Curacao America/Aruba
  
  # Bolivia
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone    America/La_Paz  -4:32:36 -      LMT     1890
                          -4:32:36 -      CMT     1931 Oct 15 # Calamarca MT
                          -4:32:36 1:00   BOST    1932 Mar 21 # Bolivia ST
!                         -4:00   -       BOT     # Bolivia Time
  
  # Brazil
  
  # From Paul Eggert (1993-11-18):
  # The mayor of Rio recently attempted to change the time zone rules
--- 416,588 ----
  # - Santiago del Estero switched to -4:00 on 1991-04-01,
  #   then to -3:00 on 1991-04-26.
  #
  Zone America/Argentina/Cordoba -4:16:48 - LMT   1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       -04     1930 Dec
!                         -4:00   Arg     -04/-03 1969 Oct  5
!                         -3:00   Arg     -03/-02 1991 Mar  3
!                         -4:00   -       -04     1991 Oct 20
!                         -3:00   Arg     -03/-02 1999 Oct  3
!                         -4:00   Arg     -04/-03 2000 Mar  3
!                         -3:00   Arg     -03/-02
  #
  # Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN)
  Zone America/Argentina/Salta -4:21:40 - LMT     1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       -04     1930 Dec
!                         -4:00   Arg     -04/-03 1969 Oct  5
!                         -3:00   Arg     -03/-02 1991 Mar  3
!                         -4:00   -       -04     1991 Oct 20
!                         -3:00   Arg     -03/-02 1999 Oct  3
!                         -4:00   Arg     -04/-03 2000 Mar  3
!                         -3:00   Arg     -03/-02 2008 Oct 18
!                         -3:00   -       -03
  #
  # Tucumán (TM)
  Zone America/Argentina/Tucuman -4:20:52 - LMT   1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       -04     1930 Dec
!                         -4:00   Arg     -04/-03 1969 Oct  5
!                         -3:00   Arg     -03/-02 1991 Mar  3
!                         -4:00   -       -04     1991 Oct 20
!                         -3:00   Arg     -03/-02 1999 Oct  3
!                         -4:00   Arg     -04/-03 2000 Mar  3
!                         -3:00   -       -03     2004 Jun  1
!                         -4:00   -       -04     2004 Jun 13
!                         -3:00   Arg     -03/-02
  #
  # La Rioja (LR)
  Zone America/Argentina/La_Rioja -4:27:24 - LMT  1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       -04     1930 Dec
!                         -4:00   Arg     -04/-03 1969 Oct  5
!                         -3:00   Arg     -03/-02 1991 Mar  1
!                         -4:00   -       -04     1991 May  7
!                         -3:00   Arg     -03/-02 1999 Oct  3
!                         -4:00   Arg     -04/-03 2000 Mar  3
!                         -3:00   -       -03     2004 Jun  1
!                         -4:00   -       -04     2004 Jun 20
!                         -3:00   Arg     -03/-02 2008 Oct 18
!                         -3:00   -       -03
  #
  # San Juan (SJ)
  Zone America/Argentina/San_Juan -4:34:04 - LMT  1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       -04     1930 Dec
!                         -4:00   Arg     -04/-03 1969 Oct  5
!                         -3:00   Arg     -03/-02 1991 Mar  1
!                         -4:00   -       -04     1991 May  7
!                         -3:00   Arg     -03/-02 1999 Oct  3
!                         -4:00   Arg     -04/-03 2000 Mar  3
!                         -3:00   -       -03     2004 May 31
!                         -4:00   -       -04     2004 Jul 25
!                         -3:00   Arg     -03/-02 2008 Oct 18
!                         -3:00   -       -03
  #
  # Jujuy (JY)
  Zone America/Argentina/Jujuy -4:21:12 - LMT     1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       -04     1930 Dec
!                         -4:00   Arg     -04/-03 1969 Oct  5
!                         -3:00   Arg     -03/-02 1990 Mar  4
!                         -4:00   -       -04     1990 Oct 28
!                         -4:00   1:00    -03     1991 Mar 17
!                         -4:00   -       -04     1991 Oct  6
!                         -3:00   1:00    -02     1992
!                         -3:00   Arg     -03/-02 1999 Oct  3
!                         -4:00   Arg     -04/-03 2000 Mar  3
!                         -3:00   Arg     -03/-02 2008 Oct 18
!                         -3:00   -       -03
  #
  # Catamarca (CT), Chubut (CH)
  Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       -04     1930 Dec
!                         -4:00   Arg     -04/-03 1969 Oct  5
!                         -3:00   Arg     -03/-02 1991 Mar  3
!                         -4:00   -       -04     1991 Oct 20
!                         -3:00   Arg     -03/-02 1999 Oct  3
!                         -4:00   Arg     -04/-03 2000 Mar  3
!                         -3:00   -       -03     2004 Jun  1
!                         -4:00   -       -04     2004 Jun 20
!                         -3:00   Arg     -03/-02 2008 Oct 18
!                         -3:00   -       -03
  #
  # Mendoza (MZ)
  Zone America/Argentina/Mendoza -4:35:16 - LMT   1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       -04     1930 Dec
!                         -4:00   Arg     -04/-03 1969 Oct  5
!                         -3:00   Arg     -03/-02 1990 Mar  4
!                         -4:00   -       -04     1990 Oct 15
!                         -4:00   1:00    -03     1991 Mar  1
!                         -4:00   -       -04     1991 Oct 15
!                         -4:00   1:00    -03     1992 Mar  1
!                         -4:00   -       -04     1992 Oct 18
!                         -3:00   Arg     -03/-02 1999 Oct  3
!                         -4:00   Arg     -04/-03 2000 Mar  3
!                         -3:00   -       -03     2004 May 23
!                         -4:00   -       -04     2004 Sep 26
!                         -3:00   Arg     -03/-02 2008 Oct 18
!                         -3:00   -       -03
  #
  # San Luis (SL)
  
  Rule    SanLuis 2008    2009    -       Mar     Sun>=8  0:00    0       -
  Rule    SanLuis 2007    2008    -       Oct     Sun>=8  0:00    1:00    S
  
  Zone America/Argentina/San_Luis -4:25:24 - LMT  1894 Oct 31
                          -4:16:48 -      CMT     1920 May
!                         -4:00   -       -04     1930 Dec
!                         -4:00   Arg     -04/-03 1969 Oct  5
!                         -3:00   Arg     -03/-02 1990
!                         -3:00   1:00    -02     1990 Mar 14
!                         -4:00   -       -04     1990 Oct 15
!                         -4:00   1:00    -03     1991 Mar  1
!                         -4:00   -       -04     1991 Jun  1
!                         -3:00   -       -03     1999 Oct  3
!                         -4:00   1:00    -03     2000 Mar  3
!                         -3:00   -       -03     2004 May 31
!                         -4:00   -       -04     2004 Jul 25
!                         -3:00   Arg     -03/-02 2008 Jan 21
!                         -4:00   SanLuis -04/-03 2009 Oct 11
!                         -3:00   -       -03
  #
  # Santa Cruz (SC)
  Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT      1894 Oct 31
!                         -4:16:48 -      CMT     1920 May
!                         -4:00   -       -04     1930 Dec
!                         -4:00   Arg     -04/-03 1969 Oct  5
!                         -3:00   Arg     -03/-02 1999 Oct  3
!                         -4:00   Arg     -04/-03 2000 Mar  3
!                         -3:00   -       -03     2004 Jun  1
!                         -4:00   -       -04     2004 Jun 20
!                         -3:00   Arg     -03/-02 2008 Oct 18
!                         -3:00   -       -03
  #
  # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF)
  Zone America/Argentina/Ushuaia -4:33:12 - LMT   1894 Oct 31
!                         -4:16:48 -      CMT     1920 May
!                         -4:00   -       -04     1930 Dec
!                         -4:00   Arg     -04/-03 1969 Oct  5
!                         -3:00   Arg     -03/-02 1999 Oct  3
!                         -4:00   Arg     -04/-03 2000 Mar  3
!                         -3:00   -       -03     2004 May 30
!                         -4:00   -       -04     2004 Jun 20
!                         -3:00   Arg     -03/-02 2008 Oct 18
!                         -3:00   -       -03
  
  # Aruba
  Link America/Curacao America/Aruba
  
  # Bolivia
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone    America/La_Paz  -4:32:36 -      LMT     1890
                          -4:32:36 -      CMT     1931 Oct 15 # Calamarca MT
                          -4:32:36 1:00   BOST    1932 Mar 21 # Bolivia ST
!                         -4:00   -       -04
  
  # Brazil
  
  # From Paul Eggert (1993-11-18):
  # The mayor of Rio recently attempted to change the time zone rules
*** 958,973 ****
  
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  #
  # Fernando de Noronha (administratively part of PE)
  Zone America/Noronha    -2:09:40 -      LMT     1914
!                         -2:00   Brazil  FN%sT   1990 Sep 17
!                         -2:00   -       FNT     1999 Sep 30
!                         -2:00   Brazil  FN%sT   2000 Oct 15
!                         -2:00   -       FNT     2001 Sep 13
!                         -2:00   Brazil  FN%sT   2002 Oct  1
!                         -2:00   -       FNT
  # Other Atlantic islands have no permanent settlement.
  # These include Trindade and Martim Vaz (administratively part of ES),
  # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE).
  # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
  # it also included the Penedos.
--- 930,945 ----
  
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  #
  # Fernando de Noronha (administratively part of PE)
  Zone America/Noronha    -2:09:40 -      LMT     1914
!                         -2:00   Brazil  -02/-01 1990 Sep 17
!                         -2:00   -       -02     1999 Sep 30
!                         -2:00   Brazil  -02/-01 2000 Oct 15
!                         -2:00   -       -02     2001 Sep 13
!                         -2:00   Brazil  -02/-01 2002 Oct  1
!                         -2:00   -       -02
  # Other Atlantic islands have no permanent settlement.
  # These include Trindade and Martim Vaz (administratively part of ES),
  # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE).
  # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
  # it also included the Penedos.
*** 976,1098 ****
  # East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu.
  # The division between east and west Pará is the river Xingu.
  # In the north a very small part from the river Javary (now Jari I guess,
  # the border with Amapá) to the Amazon, then to the Xingu.
  Zone America/Belem      -3:13:56 -      LMT     1914
!                         -3:00   Brazil  BR%sT   1988 Sep 12
!                         -3:00   -       BRT
  #
  # west Pará (PA)
  # West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém.
  Zone America/Santarem   -3:38:48 -      LMT     1914
!                         -4:00   Brazil  AM%sT   1988 Sep 12
!                         -4:00   -       AMT     2008 Jun 24  0:00
!                         -3:00   -       BRT
  #
  # Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN),
  # Paraíba (PB)
  Zone America/Fortaleza  -2:34:00 -      LMT     1914
!                         -3:00   Brazil  BR%sT   1990 Sep 17
!                         -3:00   -       BRT     1999 Sep 30
!                         -3:00   Brazil  BR%sT   2000 Oct 22
!                         -3:00   -       BRT     2001 Sep 13
!                         -3:00   Brazil  BR%sT   2002 Oct  1
!                         -3:00   -       BRT
  #
  # Pernambuco (PE) (except Atlantic islands)
  Zone America/Recife     -2:19:36 -      LMT     1914
!                         -3:00   Brazil  BR%sT   1990 Sep 17
!                         -3:00   -       BRT     1999 Sep 30
!                         -3:00   Brazil  BR%sT   2000 Oct 15
!                         -3:00   -       BRT     2001 Sep 13
!                         -3:00   Brazil  BR%sT   2002 Oct  1
!                         -3:00   -       BRT
  #
  # Tocantins (TO)
  Zone America/Araguaina  -3:12:48 -      LMT     1914
!                         -3:00   Brazil  BR%sT   1990 Sep 17
!                         -3:00   -       BRT     1995 Sep 14
!                         -3:00   Brazil  BR%sT   2003 Sep 24
!                         -3:00   -       BRT     2012 Oct 21
!                         -3:00   Brazil  BR%sT   2013 Sep
!                         -3:00   -       BRT
  #
  # Alagoas (AL), Sergipe (SE)
  Zone America/Maceio     -2:22:52 -      LMT     1914
!                         -3:00   Brazil  BR%sT   1990 Sep 17
!                         -3:00   -       BRT     1995 Oct 13
!                         -3:00   Brazil  BR%sT   1996 Sep  4
!                         -3:00   -       BRT     1999 Sep 30
!                         -3:00   Brazil  BR%sT   2000 Oct 22
!                         -3:00   -       BRT     2001 Sep 13
!                         -3:00   Brazil  BR%sT   2002 Oct  1
!                         -3:00   -       BRT
  #
  # Bahia (BA)
  # There are too many Salvadors elsewhere, so use America/Bahia instead
  # of America/Salvador.
  Zone America/Bahia      -2:34:04 -      LMT     1914
!                         -3:00   Brazil  BR%sT   2003 Sep 24
!                         -3:00   -       BRT     2011 Oct 16
!                         -3:00   Brazil  BR%sT   2012 Oct 21
!                         -3:00   -       BRT
  #
  # Goiás (GO), Distrito Federal (DF), Minas Gerais (MG),
  # Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR),
  # Santa Catarina (SC), Rio Grande do Sul (RS)
  Zone America/Sao_Paulo  -3:06:28 -      LMT     1914
!                         -3:00   Brazil  BR%sT   1963 Oct 23  0:00
!                         -3:00   1:00    BRST    1964
!                         -3:00   Brazil  BR%sT
  #
  # Mato Grosso do Sul (MS)
  Zone America/Campo_Grande -3:38:28 -    LMT     1914
!                         -4:00   Brazil  AM%sT
  #
  # Mato Grosso (MT)
  Zone America/Cuiaba     -3:44:20 -      LMT     1914
!                         -4:00   Brazil  AM%sT   2003 Sep 24
!                         -4:00   -       AMT     2004 Oct  1
!                         -4:00   Brazil  AM%sT
  #
  # Rondônia (RO)
  Zone America/Porto_Velho -4:15:36 -     LMT     1914
!                         -4:00   Brazil  AM%sT   1988 Sep 12
!                         -4:00   -       AMT
  #
  # Roraima (RR)
  Zone America/Boa_Vista  -4:02:40 -      LMT     1914
!                         -4:00   Brazil  AM%sT   1988 Sep 12
!                         -4:00   -       AMT     1999 Sep 30
!                         -4:00   Brazil  AM%sT   2000 Oct 15
!                         -4:00   -       AMT
  #
  # east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto
  # The great circle line from Tabatinga to Porto Acre divides
  # east from west Amazonas.
  Zone America/Manaus     -4:00:04 -      LMT     1914
!                         -4:00   Brazil  AM%sT   1988 Sep 12
!                         -4:00   -       AMT     1993 Sep 28
!                         -4:00   Brazil  AM%sT   1994 Sep 22
!                         -4:00   -       AMT
  #
  # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
  #       Eirunepé, Envira, Ipixuna
  Zone America/Eirunepe   -4:39:28 -      LMT     1914
!                         -5:00   Brazil  AC%sT   1988 Sep 12
!                         -5:00   -       ACT     1993 Sep 28
!                         -5:00   Brazil  AC%sT   1994 Sep 22
!                         -5:00   -       ACT     2008 Jun 24  0:00
!                         -4:00   -       AMT     2013 Nov 10
!                         -5:00   -       ACT
  #
  # Acre (AC)
  Zone America/Rio_Branco -4:31:12 -      LMT     1914
!                         -5:00   Brazil  AC%sT   1988 Sep 12
!                         -5:00   -       ACT     2008 Jun 24  0:00
!                         -4:00   -       AMT     2013 Nov 10
!                         -5:00   -       ACT
  
  # Chile
  
  # From Paul Eggert (2015-04-03):
  # Shanks & Pottenger says America/Santiago introduced standard time in
--- 948,1070 ----
  # East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu.
  # The division between east and west Pará is the river Xingu.
  # In the north a very small part from the river Javary (now Jari I guess,
  # the border with Amapá) to the Amazon, then to the Xingu.
  Zone America/Belem      -3:13:56 -      LMT     1914
!                         -3:00   Brazil  -03/-02 1988 Sep 12
!                         -3:00   -       -03
  #
  # west Pará (PA)
  # West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém.
  Zone America/Santarem   -3:38:48 -      LMT     1914
!                         -4:00   Brazil  -04/-03 1988 Sep 12
!                         -4:00   -       -04     2008 Jun 24  0:00
!                         -3:00   -       -03
  #
  # Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN),
  # Paraíba (PB)
  Zone America/Fortaleza  -2:34:00 -      LMT     1914
!                         -3:00   Brazil  -03/-02 1990 Sep 17
!                         -3:00   -       -03     1999 Sep 30
!                         -3:00   Brazil  -03/-02 2000 Oct 22
!                         -3:00   -       -03     2001 Sep 13
!                         -3:00   Brazil  -03/-02 2002 Oct  1
!                         -3:00   -       -03
  #
  # Pernambuco (PE) (except Atlantic islands)
  Zone America/Recife     -2:19:36 -      LMT     1914
!                         -3:00   Brazil  -03/-02 1990 Sep 17
!                         -3:00   -       -03     1999 Sep 30
!                         -3:00   Brazil  -03/-02 2000 Oct 15
!                         -3:00   -       -03     2001 Sep 13
!                         -3:00   Brazil  -03/-02 2002 Oct  1
!                         -3:00   -       -03
  #
  # Tocantins (TO)
  Zone America/Araguaina  -3:12:48 -      LMT     1914
!                         -3:00   Brazil  -03/-02 1990 Sep 17
!                         -3:00   -       -03     1995 Sep 14
!                         -3:00   Brazil  -03/-02 2003 Sep 24
!                         -3:00   -       -03     2012 Oct 21
!                         -3:00   Brazil  -03/-02 2013 Sep
!                         -3:00   -       -03
  #
  # Alagoas (AL), Sergipe (SE)
  Zone America/Maceio     -2:22:52 -      LMT     1914
!                         -3:00   Brazil  -03/-02 1990 Sep 17
!                         -3:00   -       -03     1995 Oct 13
!                         -3:00   Brazil  -03/-02 1996 Sep  4
!                         -3:00   -       -03     1999 Sep 30
!                         -3:00   Brazil  -03/-02 2000 Oct 22
!                         -3:00   -       -03     2001 Sep 13
!                         -3:00   Brazil  -03/-02 2002 Oct  1
!                         -3:00   -       -03
  #
  # Bahia (BA)
  # There are too many Salvadors elsewhere, so use America/Bahia instead
  # of America/Salvador.
  Zone America/Bahia      -2:34:04 -      LMT     1914
!                         -3:00   Brazil  -03/-02 2003 Sep 24
!                         -3:00   -       -03     2011 Oct 16
!                         -3:00   Brazil  -03/-02 2012 Oct 21
!                         -3:00   -       -03
  #
  # Goiás (GO), Distrito Federal (DF), Minas Gerais (MG),
  # Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR),
  # Santa Catarina (SC), Rio Grande do Sul (RS)
  Zone America/Sao_Paulo  -3:06:28 -      LMT     1914
!                         -3:00   Brazil  -03/-02 1963 Oct 23  0:00
!                         -3:00   1:00    -02     1964
!                         -3:00   Brazil  -03/-02
  #
  # Mato Grosso do Sul (MS)
  Zone America/Campo_Grande -3:38:28 -    LMT     1914
!                         -4:00   Brazil  -04/-03
  #
  # Mato Grosso (MT)
  Zone America/Cuiaba     -3:44:20 -      LMT     1914
!                         -4:00   Brazil  -04/-03 2003 Sep 24
!                         -4:00   -       -04     2004 Oct  1
!                         -4:00   Brazil  -04/-03
  #
  # Rondônia (RO)
  Zone America/Porto_Velho -4:15:36 -     LMT     1914
!                         -4:00   Brazil  -04/-03 1988 Sep 12
!                         -4:00   -       -04
  #
  # Roraima (RR)
  Zone America/Boa_Vista  -4:02:40 -      LMT     1914
!                         -4:00   Brazil  -04/-03 1988 Sep 12
!                         -4:00   -       -04     1999 Sep 30
!                         -4:00   Brazil  -04/-03 2000 Oct 15
!                         -4:00   -       -04
  #
  # east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto
  # The great circle line from Tabatinga to Porto Acre divides
  # east from west Amazonas.
  Zone America/Manaus     -4:00:04 -      LMT     1914
!                         -4:00   Brazil  -04/-03 1988 Sep 12
!                         -4:00   -       -04     1993 Sep 28
!                         -4:00   Brazil  -04/-03 1994 Sep 22
!                         -4:00   -       -04
  #
  # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
  #       Eirunepé, Envira, Ipixuna
  Zone America/Eirunepe   -4:39:28 -      LMT     1914
!                         -5:00   Brazil  -05/-04 1988 Sep 12
!                         -5:00   -       -05     1993 Sep 28
!                         -5:00   Brazil  -05/-04 1994 Sep 22
!                         -5:00   -       -05     2008 Jun 24  0:00
!                         -4:00   -       -04     2013 Nov 10
!                         -5:00   -       -05
  #
  # Acre (AC)
  Zone America/Rio_Branco -4:31:12 -      LMT     1914
!                         -5:00   Brazil  -05/-04 1988 Sep 12
!                         -5:00   -       -05     2008 Jun 24  0:00
!                         -4:00   -       -04     2013 Nov 10
!                         -5:00   -       -05
  
  # Chile
  
  # From Paul Eggert (2015-04-03):
  # Shanks & Pottenger says America/Santiago introduced standard time in
*** 1233,1242 ****
--- 1205,1226 ----
  # For now, assume the pattern holds for the indefinite future.
  # The decree says transitions occur at 24:00; in practice this appears
  # to mean 24:00 mainland time, not 24:00 local time, so that Easter
  # Island is always two hours behind the mainland.
  
+ # From Juan Correa (2016-12-04):
+ # Magallanes region ... will keep DST (UTC -3) all year round....
+ # http://www.soychile.cl/Santiago/Sociedad/2016/12/04/433428/Bachelet-firmo-el-decreto-para-establecer-un-horario-unico-para-la-Region-de-Magallanes.aspx
+ #
+ # From Deborah Goldsmith (2017-01-19):
+ # http://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/1169626.pdf
+ # From Paul Eggert (2017-01-19):
+ # The above says the Magallanes change expires 2019-05-11 at 24:00,
+ # so in theory, they will revert to -04/-03 after that, which means
+ # they will switch from -03 to -04 one hour after Santiago does that day.
+ # For now, assume that they will not revert.
+ 
  # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
  Rule    Chile   1927    1931    -       Sep      1      0:00    1:00    S
  Rule    Chile   1928    1932    -       Apr      1      0:00    0       -
  Rule    Chile   1968    only    -       Nov      3      4:00u   1:00    S
  Rule    Chile   1969    only    -       Mar     30      3:00u   0       -
*** 1273,1298 ****
  # 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 Jan 10 # Santiago Mean Time
!                         -5:00   -       CLT     1916 Jul  1 # 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
  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
  #
  # Salas y Gómez Island is uninhabited.
  # Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
  # and Antarctic bases, are like America/Santiago.
  
--- 1257,1295 ----
  # 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 Jan 10 # Santiago Mean Time
!                         -5:00   -       -05     1916 Jul  1
                          -4:42:46 -      SMT     1918 Sep 10
!                         -4:00   -       -04     1919 Jul  1
                          -4:42:46 -      SMT     1927 Sep  1
!                         -5:00   Chile   -05/-04 1932 Sep  1
!                         -4:00   -       -04     1942 Jun  1
!                         -5:00   -       -05     1942 Aug  1
!                         -4:00   -       -04     1946 Jul 15
!                         -4:00   1:00    -03     1946 Sep  1 # central Chile
!                         -4:00   -       -04     1947 Apr  1
!                         -5:00   -       -05     1947 May 21 23:00
!                         -4:00   Chile   -04/-03
! Zone America/Punta_Arenas -4:43:40 -    LMT     1890
!                         -4:42:46 -      SMT     1910 Jan 10
!                         -5:00   -       -05     1916 Jul  1
!                         -4:42:46 -      SMT     1918 Sep 10
!                         -4:00   -       -04     1919 Jul  1
!                         -4:42:46 -      SMT     1927 Sep  1
!                         -5:00   Chile   -05/-04 1932 Sep  1
!                         -4:00   -       -04     1942 Jun  1
!                         -5:00   -       -05     1942 Aug  1
!                         -4:00   -       -04     1947 Apr  1
!                         -5:00   -       -05     1947 May 21 23:00
!                         -4:00   Chile   -04/-03 2016 Dec  4
!                         -3:00   -       -03
  Zone Pacific/Easter     -7:17:28 -      LMT     1890
                          -7:17:28 -      EMT     1932 Sep    # Easter Mean Time
!                         -7:00   Chile   -07/-06 1982 Mar 14 3:00u # Easter Time
!                         -6:00   Chile   -06/-05
  #
  # Salas y Gómez Island is uninhabited.
  # Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
  # and Antarctic bases, are like America/Santiago.
  
*** 1308,1320 ****
  # 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       -       -00     1965
!                         -4:00   Arg     AR%sT   1969 Oct  5
!                         -3:00   Arg     AR%sT   1982 May
!                         -4:00   Chile   CL%sT
  
  # Colombia
  
  # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest.  He writes,
  # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
--- 1305,1318 ----
  # 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       -       -00     1965
!                         -4:00   Arg     -04/-03 1969 Oct  5
!                         -3:00   Arg     -03/-02 1982 May
!                         -4:00   Chile   -04/-03 2016 Dec  4
!                         -3:00   -       -03
  
  # Colombia
  
  # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest.  He writes,
  # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
*** 1323,1333 ****
  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  -4:56:16 -      LMT     1884 Mar 13
                          -4:56:16 -      BMT     1914 Nov 23 # Bogotá Mean Time
!                         -5:00   CO      CO%sT   # Colombia Time
  # Malpelo, Providencia, San Andres
  # no information; probably like America/Bogota
  
  # Curaçao
  
--- 1321,1331 ----
  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  -4:56:16 -      LMT     1884 Mar 13
                          -4:56:16 -      BMT     1914 Nov 23 # Bogotá Mean Time
!                         -5:00   CO      -05/-04
  # Malpelo, Providencia, San Andres
  # no information; probably like America/Bogota
  
  # Curaçao
  
*** 1347,1357 ****
  # 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 -4:35:47 -      LMT     1912 Feb 12 # Willemstad
!                         -4:30   -       ANT     1965 # Netherlands Antilles Time
                          -4:00   -       AST
  
  # From Arthur David Olson (2011-06-15):
  # use links for places with new iso3166 codes.
  # The name "Lower Prince's Quarter" is both longer than fourteen characters
--- 1345,1355 ----
  # 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 -4:35:47 -      LMT     1912 Feb 12 # Willemstad
!                         -4:30   -       -0430   1965
                          -4:00   -       AST
  
  # From Arthur David Olson (2011-06-15):
  # use links for places with new iso3166 codes.
  # The name "Lower Prince's Quarter" is both longer than fourteen characters
*** 1362,1384 ****
  
  # Ecuador
  #
  # Milne says the Central 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.
  #
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone America/Guayaquil  -5:19:20 -      LMT     1890
                          -5:14:00 -      QMT     1931 # Quito Mean Time
!                         -5:00   -       ECT     # Ecuador Time
  Zone Pacific/Galapagos  -5:58:24 -      LMT     1931 # Puerto Baquerizo Moreno
!                         -5:00   -       ECT     1986
!                         -6:00   -       GALT    # Galápagos Time
  
  # Falklands
  
  # From Paul Eggert (2006-03-22):
  # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except
--- 1360,1395 ----
  
  # Ecuador
  #
  # Milne says the Central and South American Telegraph Company used -5:24:15.
  #
! # From Alois Treindl (2016-12-15):
! # http://www.elcomercio.com/actualidad/hora-sixto-1993.html
! # ... Whether the law applied also to Galápagos, I do not know.
! # From Paul Eggert (2016-12-15):
! # http://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html
! # This says President Sixto Durán Ballén signed decree No. 285, which
! # established DST from 1992-11-28 to 1993-02-05; it does not give transition
! # times.  The people called it "hora de Sixto" ("Sixto hour").  The change did
! # not go over well; a popular song "Qué hora es" by Jaime Guevara had lyrics
! # that included "Amanecía en mitad de la noche, los guaguas iban a clase sin
! # sol" ("It was dawning in the middle of the night, the buses went to class
! # without sun").  Although Ballén's campaign slogan was "Ni un paso atrás"
! # (Not one step back), the clocks went back in 1993 and the experiment was not
! # repeated.  For now, assume transitions were at 00:00 local time country-wide.
  #
+ # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
+ Rule    Ecuador 1992    only    -       Nov     28      0:00    1:00    S
+ Rule    Ecuador 1993    only    -       Feb      5      0:00    0       -
+ #
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone America/Guayaquil  -5:19:20 -      LMT     1890
                          -5:14:00 -      QMT     1931 # Quito Mean Time
!                         -5:00   Ecuador -05/-04
  Zone Pacific/Galapagos  -5:58:24 -      LMT     1931 # Puerto Baquerizo Moreno
!                         -5:00   -       -05     1986
!                         -6:00   Ecuador -06/-05
  
  # Falklands
  
  # From Paul Eggert (2006-03-22):
  # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except
*** 1474,1502 ****
  Rule    Falk    2001    2010    -       Apr     Sun>=15 2:00    0       -
  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   2010 Sep  5  2:00
!                         -3:00   -       FKST
  
  # French Guiana
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone America/Cayenne    -3:29:20 -      LMT     1911 Jul
!                         -4:00   -       GFT     1967 Oct # French Guiana Time
!                         -3:00   -       GFT
  
  # Guyana
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone    America/Guyana  -3:52:40 -      LMT     1915 Mar    # Georgetown
!                         -3:45   -       GBGT    1966 May 26 # Br Guiana Time
!                         -3:45   -       GYT     1975 Jul 31 # Guyana Time
!                         -3:00   -       GYT     1991
  # IATA SSIM (1996-06) says -4:00.  Assume a 1991 switch.
!                         -4:00   -       GYT
  
  # Paraguay
  #
  # From Paul Eggert (2006-03-22):
  # Shanks & Pottenger say that spring transitions are 01:00 -> 02:00,
--- 1485,1512 ----
  Rule    Falk    2001    2010    -       Apr     Sun>=15 2:00    0       -
  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    -04/-03 1983 May
!                         -3:00   Falk    -03/-02 1985 Sep 15
!                         -4:00   Falk    -04/-03 2010 Sep  5  2:00
!                         -3:00   -       -03
  
  # French Guiana
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone America/Cayenne    -3:29:20 -      LMT     1911 Jul
!                         -4:00   -       -04     1967 Oct
!                         -3:00   -       -03
  
  # Guyana
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone    America/Guyana  -3:52:40 -      LMT     1915 Mar    # Georgetown
!                         -3:45   -       -0345   1975 Jul 31
!                         -3:00   -       -03     1991
  # IATA SSIM (1996-06) says -4:00.  Assume a 1991 switch.
!                         -4:00   -       -04
  
  # Paraguay
  #
  # From Paul Eggert (2006-03-22):
  # Shanks & Pottenger say that spring transitions are 01:00 -> 02:00,
*** 1584,1596 ****
  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 # Asunción Mean Time
!                         -4:00   -       PYT     1972 Oct    # Paraguay Time
!                         -3:00   -       PYT     1974 Apr
!                         -4:00   Para    PY%sT
  
  # Peru
  #
  # From Evelyn C. Leeper via Mark Brader (2003-10-26)
  # <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>:
--- 1594,1606 ----
  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 # Asunción Mean Time
!                         -4:00   -       -04     1972 Oct
!                         -3:00   -       -03     1974 Apr
!                         -4:00   Para    -04/-03
  
  # Peru
  #
  # From Evelyn C. Leeper via Mark Brader (2003-10-26)
  # <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>:
*** 1613,1640 ****
  Rule    Peru    1994    only    -       Jan      1      0:00    1:00    S
  Rule    Peru    1994    only    -       Apr      1      0:00    0       -
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone    America/Lima    -5:08:12 -      LMT     1890
                          -5:08:36 -      LMT     1908 Jul 28 # Lima Mean Time?
!                         -5:00   Peru    PE%sT   # Peru Time
  
  # South Georgia
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone Atlantic/South_Georgia -2:26:08 -  LMT     1890 # Grytviken
!                         -2:00   -       GST     # South Georgia Time
  
  # South Sandwich Is
  # uninhabited; scientific personnel have wintered
  
  # Suriname
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone America/Paramaribo -3:40:40 -      LMT     1911
                          -3:40:52 -      PMT     1935     # Paramaribo Mean Time
                          -3:40:36 -      PMT     1945 Oct    # The capital moved?
!                         -3:30   -       NEGT    1975 Nov 20 # Dutch Guiana Time
!                         -3:30   -       SRT     1984 Oct    # Suriname Time
!                         -3:00   -       SRT
  
  # Trinidad and Tobago
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone America/Port_of_Spain -4:06:04 -   LMT     1912 Mar 2
                          -4:00   -       AST
--- 1623,1649 ----
  Rule    Peru    1994    only    -       Jan      1      0:00    1:00    S
  Rule    Peru    1994    only    -       Apr      1      0:00    0       -
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone    America/Lima    -5:08:12 -      LMT     1890
                          -5:08:36 -      LMT     1908 Jul 28 # Lima Mean Time?
!                         -5:00   Peru    -05/-04
  
  # South Georgia
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone Atlantic/South_Georgia -2:26:08 -  LMT     1890 # Grytviken
!                         -2:00   -       -02
  
  # South Sandwich Is
  # uninhabited; scientific personnel have wintered
  
  # Suriname
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone America/Paramaribo -3:40:40 -      LMT     1911
                          -3:40:52 -      PMT     1935     # Paramaribo Mean Time
                          -3:40:36 -      PMT     1945 Oct    # The capital moved?
!                         -3:30   -       -0330   1984 Oct
!                         -3:00   -       -03
  
  # Trinidad and Tobago
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone America/Port_of_Spain -4:06:04 -   LMT     1912 Mar 2
                          -4:00   -       AST
*** 1733,1747 ****
  # From Pablo Camargo (2015-07-13):
  # http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf
  # [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04]
  Rule    Uruguay 2006    2014    -       Oct     Sun>=1   2:00   1:00    S
  Rule    Uruguay 2007    2015    -       Mar     Sun>=8   2:00   0       -
! # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone America/Montevideo -3:44:44 -      LMT     1898 Jun 28
                          -3:44:44 -      MMT     1920 May  1 # Montevideo MT
!                         -3:30   Uruguay UY%sT   1942 Dec 14 # Uruguay Time
!                         -3:00   Uruguay UY%sT
  
  # Venezuela
  #
  # From Paul Eggert (2015-07-28):
  # For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533
--- 1742,1761 ----
  # From Pablo Camargo (2015-07-13):
  # http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf
  # [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04]
  Rule    Uruguay 2006    2014    -       Oct     Sun>=1   2:00   1:00    S
  Rule    Uruguay 2007    2015    -       Mar     Sun>=8   2:00   0       -
! 
! # This Zone can be simplified once we assume zic %z.
  Zone America/Montevideo -3:44:44 -      LMT     1898 Jun 28
                          -3:44:44 -      MMT     1920 May  1 # Montevideo MT
!                         -3:30   Uruguay -0330/-03 1942 Dec 14
!                         -3:00   Uruguay -03/-02 1968
!                         -3:00   Uruguay -03/-0230 1971
!                         -3:00   Uruguay -03/-02 1974
!                         -3:00   Uruguay -03/-0230 1974 Dec 22
!                         -3:00   Uruguay -03/-02
  
  # Venezuela
  #
  # From Paul Eggert (2015-07-28):
  # For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533
*** 1771,1779 ****
  # http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf
  
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone    America/Caracas -4:27:44 -      LMT     1890
                          -4:27:40 -      CMT     1912 Feb 12 # Caracas Mean Time?
!                         -4:30   -       VET     1965 Jan  1  0:00 # Venezuela T.
!                         -4:00   -       VET     2007 Dec  9  3:00
!                         -4:30   -       VET     2016 May  1  2:30
!                         -4:00   -       VET
--- 1785,1793 ----
  # http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf
  
  # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
  Zone    America/Caracas -4:27:44 -      LMT     1890
                          -4:27:40 -      CMT     1912 Feb 12 # Caracas Mean Time?
!                         -4:30   -       -0430   1965 Jan  1  0:00
!                         -4:00   -       -04     2007 Dec  9  3:00
!                         -4:30   -       -0430   2016 May  1  2:30
!                         -4:00   -       -04