proposed tz changes for Brazil, Jordan, Nicaragua, Serbia & Montenegro

Rodrigo Severo rodrigo at fabricadeideias.com
Fri Oct 6 20:29:02 UTC 2006


On 10/7/06, Paul Eggert <eggert at cs.ucla.edu> wrote:

> # Rule
> NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
> # Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a>
> (1931-10-01)
> @@ -548,7 +544,7 @@ Rule        Brazil  2000    only    -       Feb
> 27       0:00   0       -
> # Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a>
> # (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE.
> Rule   Brazil  2000    2001    -       Oct     Sun>=8   0:00   1:00    S
> -Rule   Brazil  2001    max     -       Feb     Sun>=15  0:00   0       -
> +Rule   Brazil  2001    2006    -       Feb     Sun>=15  0:00   0       -
> # Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE.
> # <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm
> "></a>
> Rule   Brazil  2002    only    -       Nov      3       0:00   1:00    S
> @@ -560,10 +556,14 @@ Rule      Brazil  2003    only    -       Oct
> 19       0:00   1:0
> Rule   Brazil  2004    only    -       Nov      2       0:00   1:00    S
> # Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a>
> (2005-09-19),
> # adopted by the same states as before.
> -Rule   Brazil  2005    max     -       Oct     Sun>=15  0:00   1:00    S
> +Rule   Brazil  2005    only    -       Oct     16       0:00   1:00    S
> +# Decree <a href="
> http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2006/Decreto/D5920.htm
> ">5,920</a>
> +# (2006-10-03), adopted by the same states as before.
> +Rule   Brazil  2006    max     -       Nov     Sun>=1   0:00   1:00    S
> +Rule   Brazil  2007    max     -       Feb     lastSun  0:00   0       -
> # 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-2006, the above rules with TO="max" are guesses
> +# For dates after mid-2007, the above rules with TO="max" are guesses
> # and are quite possibly wrong, but are more likely than no DST at all.


I see you used the rules for 2006/2007 as max rules for Brazil. I'm not sure
this is a good idea. And as far as I can remember it isn't what we have been
doing in previous years.

As far as I can recall we have been using "only" rules for election years
(as 2006, in fact the even years) and wishfull rules like "Feb
Sun>=15  0:00   0       -" and "max     -       Oct     Sun>=15  0:00
1:00    S" for others (the odd non-election years) in hope the pattern will
stick.

None of us can predict the future, I know. I am only taking the time to
write all this as the "wishfull" rules above have worked before for odd
years. I bet they will work next year (it's just a bet based on previous
years). Maybe it would be better to use "max" rules as the ones we have used
before.


My 2 cents,

Rodrigo Severo
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