FW: Brazil DST changes - Mailing list and new diffs

[Herton Ronaldo Krzesinski]

On Monday 15 September 2008 14:31:22 Olson, Arthur David (NIH/NCI) [E] wrote:
> I'm forwarding this message from Frederico A. C. Neves, who was not on
> the time zone mailing list at the time it was sent.
> 
> 				--ado
> 
> -----Original Message-----
> From: Frederico A C Neves [mailto:fneves at registro.br] 
> Sent: Monday, September 15, 2008 1:28
> To: Olson at registro.br; Olson, Arthur David (NIH/NCI) [E]
> Subject: Brazil DST changes - Mailing list and new diffs
> 
> Dear Mr. Olson,
> 
> I've tried to subscribe to the TZ mailing list apparently without
> success. I've a new diff file with 2 corrected typos.
> 
> I'm sending the message direct to you because I saw your message at the
> archives talking about the subject I sent originally. I can't find my
> message at the archives.
> 
> Regards,
> Frederico Neves
> 

Hi,

I found some problems in the changes:
- Need to be redone for 2008f tzdata changes
- Small typo in added comment ("exceptiion")
- The comment
 # For dates after mid-2008, the above rules with TO="max" are guesses
 # and are quite possibly wrong, but are more likely than no DST at all.
  could be removed.
- Checking output with zdump -v, trying to specify the generic rule
"Rule  Brazil  2008    max     -       Feb     Sun>=15  0:00   0       -"
followed by "only" rules trying to override it didn't work, need to specify
ranges manually.

Here is a new diff with these items fixed:

diff -p -up tzdata/tzdata2008f/southamerica.orig tzdata/tzdata2008f/southamerica
--- tzdata/tzdata2008f/southamerica.orig	2008-09-17 18:59:04.000000000 -0300
+++ tzdata/tzdata2008f/southamerica	2008-09-17 19:00:10.000000000 -0300
@@ -768,12 +768,25 @@ Rule	Brazil	2007	only	-	Feb	25	 0:00	0	-
 # Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26),
 # adopted by the same states as before.
 Rule	Brazil	2007	only	-	Oct	Sun>=8	 0:00	1:00	S
-Rule	Brazil	2008	max	-	Feb	Sun>=15	 0:00	0	-
+# Decree <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm">6,558</a>
+# At least a fixed rule! 3rd Sun Oct to 3rd Sun Feb. There is an
+# exception when the return date is a Carnival Sunday then the return
+# will be the next Sunday. Exceptions until 2038 calculated bellow
+# adopted by the same states as before.
 Rule	Brazil	2008	max	-	Oct	Sun>=15	 0:00	1:00	S
-# The latest ruleset listed above says that the following states observe DST:
-# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP.
-# For dates after mid-2008, the above rules with TO="max" are guesses
-# and are quite possibly wrong, but are more likely than no DST at all.
+Rule	Brazil	2008	2011	-	Feb	Sun>=15	 0:00	0	-
+Rule	Brazil	2012	only	-	Feb	26	 0:00	0	-
+Rule	Brazil	2013	2014	-	Feb	Sun>=15	 0:00	0	-
+Rule	Brazil	2015	only	-	Feb	22	 0:00	0	-
+Rule	Brazil	2016	2022	-	Feb	Sun>=15	 0:00	0	-
+Rule	Brazil	2023	only	-	Feb	26	 0:00	0	-
+Rule	Brazil	2024	2025	-	Feb	Sun>=15	 0:00	0	-
+Rule	Brazil	2026	only	-	Feb	22	 0:00	0	-
+Rule	Brazil	2027	2033	-	Feb	Sun>=15	 0:00	0	-
+Rule	Brazil	2034	only	-	Feb	26	 0:00	0	-
+Rule	Brazil	2035	2036	-	Feb	Sun>=15	 0:00	0	-
+Rule	Brazil	2037	only	-	Feb	22	 0:00	0	-
+Rule	Brazil	2038	max	-	Feb	Sun>=15	 0:00	0	-
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 #


-- 
[]'s
Herton