I would just like to correct two of the problem descriptions I sent before: About item 2 below: The changes I made regard the ending of DST time at 1966, not the begining of DST time. The fix in the patch is ok. About item 5 below: The previous zone description for the America/Sao_Paulo zone had a special spurious line fixing DST up to the _BEGINING_ of 1964, not _DURING_THE_WHOLE_ year of 1964 as I mentioned before. The fix in the patch is ok. Thanks again for your attention, Rodrigo Severo Olson, Arthur David (NIH/NCI) wrote:
Rodrigo Severo has been added to the time zone mailing list since this message was received.
--ado
-----Original Message----- From: Rodrigo Severo [mailto:rodrigo.lists@fabricadeideias.com] Sent: Thursday, October 16, 2003 7:31 PM To: tz@lecserver.nci.nih.gov Subject: Brazil zoneinfo corrections.
Dear list,
First of all, I would like to apologize for the confusion I might have caused with my previous emails. The corrections for the brazilian rules and zones I sent where already included in tzdata. I hope this haven't created any problems.
Now I send another set of corrections for the brazilian tz data. I have just finished a full review of its rules and zoneinfo from the decrees list at the Brazilian National Observatory (main source of time info in Brazil, the same source already used by previous authors) with the following problems identified and corrected:
1. The effects of decrees 52700 (1963-10-18) and 53071 (1963-12-03) weren't correctly represented by the data as what they really have done was to make a set of states start DST at 1963-10-23 00:00 and the rest of the country to start DST at 1963-12-09 00:00.
Fix: change the rule and all affected zones (almost all of them). Also had to create a new Brasilia zone to acomodate the diferences between Sao_Paulo zone and Goias (GO), Distrito Federal (DF), Parana (PR), Santa Catarina (SC), Rio Grande do Sul (RS).
2. The starting time of DST for 1966 was wrong as the 57843 decree stablishes that DST shall begin at 1966-03-01 01:00 and on 1st of March 00:00 from 1967 and on.
Fix: new rule for DST start at 1966.
3. Decree 1252 (1994-09-22) defines that the previous states minus AM _AND_ MT states would have DST during 1994/1995 summer. The author of the previous comment probably relied on the Brazilian National Observatory resume of the decree - which is wrong - and not on the actual decree itself (also available at the Brazilian National Observatory site).
Fix: America/Cuiaba zone fix.
4. Fernando de Noronha island had wrong timezone info as it should include all DSTs for the Pernambuco state after 1988 as Fernando de Noronha island became part of the Pernambuco state after the brazilian contitution of 1988. If someone has any doubt about it, please check decree 96676 (pre 1988) which clearly includes Pernambuco state, Fernando de Noronha and Atlantic islands. Compare with decree 98077 (pos 1988) which clearly includes Pernambuco state and Atlantic islands (doesn't mention Fernando de Noronha because it already mentioned Pernambuco).
Fix: Include all DSTs for Pernambuco after 1988 and create new zone Atol_das_Rocas for the atlantic islands. Maybe this new zone should be called Brazilian_Atlantic_Islands? Too long?
5. America/Sao_Paulo zone had a DST during the whole 1964. I can't see where it came from. There is no decree mentioning it.
Fix: Remove it spurious zone info.
The patch I am including here is based on the data available at ftp://elsie.nci.nih.gov/pub/ dated 10/06/2003 01:41:00 PM.
If someone has any comments on these changes, please send a copy to my personal email as I not sure if I am already subscribed to this list.
Thanks in advance for your attention,
Rodrigo Severo