Deleted Added
full compact
1c1
< # @(#)southamerica 7.14
---
> # @(#)southamerica 7.15
7c7
< # From Paul Eggert <eggert@twinsun.com> (1996-09-03):
---
> # From Paul Eggert <eggert@twinsun.com> (1996-11-22):
11d10
< # Except where otherwise noted, it is the source for the data below.
12a12,20
> # Gwillim Law <LAW@encmail.encompass.com> 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, Shanks is the source for entries through 1990,
> # and IATA SSIM is the source for entries after 1990.
> #
105a114,116
> #
> # Buenos Aires (BA), Distrito Federal (DF), Santa Cruz (SC),
> # Tierra del Fuego (TF) & Antartida e Islas
110a122,171
> #
> # Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC),
> # Formosa (FM), La Pampa (LP), Chubut (CH)
> Zone America/Rosario -4:02:40 - LMT 1894 Nov
> -4:16:44 - CMT 1920 May
> -4:00 - ART 1930 Dec
> -4:00 Arg AR%sT 1969 Oct 5
> -3:00 Arg AR%sT 1991 Jul
> -3:00 - ART
> #
> # Cordoba (CB), Santiago del Estero (SE), Salta (SA), Tucuman (TM), La Rioja (LR), San Juan (SJ), San Luis (SL),
> # Neuquen (NQ), Rio Negro (RN)
> Zone America/Cordoba -4:16:44 - LMT 1894 Nov
> -4:16:44 - CMT 1920 May
> -4:00 - ART 1930 Dec
> -4:00 Arg AR%sT 1969 Oct 5
> -3:00 Arg AR%sT 1990 Jul
> -3:00 - ART
> #
> # Jujuy (JY)
> Zone America/Jujuy -4:21:12 - LMT 1894 Nov
> -4:16:44 - 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 6
> -4:00 1:00 WARST 1992 Mar 15
> -4:00 - WART 1992 Oct 18
> -3:00 - ART
> #
> # Catamarca (CT)
> Zone America/Catamarca -4:23:08 - LMT 1894 Nov
> -4:16:44 - CMT 1920 May
> -4:00 - ART 1930 Dec
> -4:00 Arg AR%sT 1969 Oct 5
> -3:00 Arg AR%sT 1990 Jul
> -3:00 - ART 1991 Jul
> -3:00 Arg AR%sT 1992 Jul
> -3:00 - ART
> #
> # Mendoza (MZ)
> Zone America/Mendoza -4:35:16 - LMT 1894 Nov
> -4:16:44 - 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 15
> -4:00 1:00 WARST 1992 Mar 1
> -4:00 - WART 1992 Oct 18
> -3:00 - ART
135,157d195
< # From Bob Devine (1988-01-28):
< # The only information I found is that there was no DST up to 1985.
< # But there was some before 1952!
<
< # From U. S. Naval Observatory (1989-01-16):
< # BRAZIL WEST 5 H BEHIND UTC TERRITORY OF ACRE
< # BRAZIL WEST 4 H BEHIND UTC ACRE OCT 23, '88-FEB 11,
< # BRAZIL '89 (ESTIMATED)
< # BRAZIL CENTRAL 4 H BEHIND UTC MANAUS
< # BRAZIL CENTRAL 3 H BEHIND UTC MANAUS OCT 23, '88-FEB 11,
< # BRAZIL CENTRAL '89 (ESTIMATED)
< # BRAZIL EAST 3 H BEHIND UTC COASTAL STATES, RIO, SAO
< # BRAZIL EAST PAULO, BRASILIA
< # BRAZIL EAST 2 H BEHIND UTC COASTAL STATES, RIO, SAO
< # BRAZIL PAULO, BRASILIA OCT 23,
< # BRAZIL '88-FEB 11, '89
< # BRAZIL (ESTIMATED)
< # BRAZIL 2 H BEHIND UTC ATLANTIC ISLANDS, FERNANDO
< # BRAZIL DE NORONHA
< # BRAZIL 1 H BEHIND UTC OCT 23, '88-FEB 11, '89
< # BRAZIL (ESTIMATED)
< # BRAZIL 3 H BEHIND UTC FOR MOST MAJOR AIRPORTS.
<
164,166d201
< # Shanks claims Acre stopped observing DST after 1988 Feb 7, but it
< # could just be that his table ran out of room. We're extrapolating
< # about time zone changes after 1990 Feb 11.
167a203,245
> # From IATA SSIM (1996-02):
> # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS),
> # Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ),
> # Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO),
> # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].
> # [The last three states are new to this issue of the IATA SSIM.]
>
> # From Gwillim Law (1996-10-07):
> # Geography, history (Tocantins was part of Goias until 1989), and other
> # sources of time zone information lead me to believe that AL, SE, and TO were
> # always in BR1, and so the only change was whether or not they observed DST....
> # The earliest issue of the SSIM I have is 2/91. Each issue from then until
> # 9/95 says that DST is observed only in the ten states I quoted from 9/95,
> # along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2
> # (UTC-4).... The other two time zones given for Brazil are BR3, which is
> # UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is
> # UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's
> # become part of the state of Pernambuco). The boundary between BR1 and BR2
> # has never been clearly stated. They've simply been called East and West.
> # However, some conclusions can be drawn from another IATA manual: the Airline
> # Coding Directory, which lists close to 400 airports in Brazil. For each
> # airport it gives a time zone which is coded to the SSIM. From that
> # information, I'm led to conclude that the states of Amapa (AP), Ceara (CE),
> # Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do
> # Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST.
>
> # From Paul Eggert (1996-11-22):
> # Let's make the following assumptions:
> #
> # * All data in Shanks are correct through 1990. In particular,
> # Shanks was right when he said Acre stopped observing DST in mid-1988.
> # * Areas where Shanks reports DST up to 1990, but the IATA reports no DST
> # in 1995, stopped observing DST in mid-1990.
> #
> # Under these assumptions Brazil needs 7 entries to cover all the distinct
> # time zone histories since 1970:
> #
> # Noronha (UTC-2), Fortaleza (UTC-3), and Manaus (UTC-4) stopped observing DST
> # in mid-1990.
> # Maceio (UTC-3) stopped observing DST in mid-1990, but started again mid-1995.
> # Sao Paulo (UTC-3) and Cuiaba (UTC-4) always observed DST.
> # Porto Acre (UTC-5) stopped observing DST in mid-1988.
>
188,189c266,274
< Rule Brazil 1988 max - Oct Sun>=15 0:00 1:00 D
< Rule Brazil 1990 max - Feb Sun>=8 0:00 0 S
---
> Rule Brazil 1988 1989 - Oct Sun>=10 0:00 1:00 D
> Rule Brazil 1990 1991 - Feb Sun>=11 0:00 0 S
> Rule Brazil 1990 1992 - Oct Sun>=20 0:00 1:00 D
> Rule Brazil 1992 only - Feb 9 0:00 0 S
> Rule Brazil 1993 max - Oct Sun>=11 0:00 1:00 D
> Rule Brazil 1993 only - Jan 31 0:00 0 S
> Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 S
> Rule Brazil 1996 max - Feb Sun>=11 0:00 0 S
>
190a276,277
> #
> # Fernando de Noronha
193c280,298
< -2:00 Brazil F%sT
---
> -2:00 Brazil F%sT 1990 Jul
> -2:00 - FST
> #
> # Amapa, east Para, Maranhao, Piaui, Ceara, Rio Grande do Norte, Paraiba,
> # Pernambuco (except Fernando de Noronha)
> Zone America/Fortaleza -2:34:00 - LMT 1914
> -3:00 - EST 1963 Dec 9
> -3:00 Brazil E%sT 1990 Jul
> -3:00 - EST
> #
> # Alagoas, Sergipe, Tocantins
> Zone America/Maceio -2:22:52 - LMT 1914
> -3:00 - EST 1963 Dec 9
> -3:00 Brazil E%sT 1990 Jul
> -3:00 - EST 1995 Jul
> -3:00 Brazil E%sT
> #
> # Bahia, Goias, Distrito Federal, Minas Gerais, Espirito Santo, Rio de Janeiro,
> # Sao Paulo, Parana, Santa Catarina, Rio Grande do Sul
196c301,303
< Zone America/Manaus -4:00:04 - LMT 1914
---
> #
> # Mato Grosso, Mato Grosso do Sul
> Zone America/Cuiaba -3:44:20 - LMT 1914
198a306,313
> #
> # Roraima, west Para, Amazonas, Rondonia
> Zone America/Manaus -4:00:04 - LMT 1914
> -4:00 - WST 1963 Dec 9
> -4:00 Brazil W%sT 1990 Jul
> -4:00 - WST
> #
> # Acre
202c317,318
< -5:00 Brazil A%sT
---
> -5:00 Brazil A%sT 1988 Jul
> -5:00 - AST
219a336,337
> # IATA SSIM anomalies: (1990-09) says 1990-09-16; (1992-02) says 1992-03-14;
> # (1996-09) says 1998-03-08. Ignore these for now.
235a354,356
> # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
> Rule CO 1992 only - May 2 0:00 1:00 S
> Rule CO 1992 only - Dec 31 0:00 0 -
239c360
< -5:00 - COT # Colombia Time
---
> -5:00 CO CO%sT # Colombia Time
268c389
< Rule Falk 1985 max - Sep Sun>=9 0:00 1:00 S
---
> Rule Falk 1985 1995 - Sep Sun>=9 0:00 1:00 S
269a391
> Rule Falk 1996 max - Sep Sun>=8 0:00 1:00 S
288c410,412
< -3:00 - GYT
---
> -3:00 - GYT 1991
> # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch.
> -4:00 - GYT
290d413
<
306c429
< Rule Para 1980 max - Apr 1 0:00 0 -
---
> Rule Para 1980 1991 - Apr 1 0:00 0 -
309c432,439
< Rule Para 1990 max - Oct 1 0:00 1:00 S
---
> Rule Para 1990 only - Oct 1 0:00 1:00 S
> Rule Para 1991 only - Oct 6 0:00 1:00 S
> Rule Para 1992 only - Mar 1 0:00 0 -
> Rule Para 1992 only - Oct 5 0:00 1:00 S
> Rule Para 1993 only - Mar 31 0:00 0 -
> Rule Para 1993 max - Oct 1 0:00 1:00 S
> Rule Para 1994 1995 - Feb lastSun 0:00 0 -
> Rule Para 1996 max - Mar 1 0:00 0 -
326a457,458
> Rule Peru 1993 only - Jan 1 0:00 1:00 S
> Rule Peru 1993 only - Apr 1 0:00 0 -
399c531,534
< Rule Uruguay 1990 only - Mar 4 0:00 0 -
---
> Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 -
> Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S
> Rule Uruguay 1992 1993 - Oct Sun>=15 0:00 1:00 S
> Rule Uruguay 1993 only - Feb 28 0:00 0 -