[tz] Zone America/Argentina/San_Luis possible rule inconsistency

[Mariano Absatz - gmail]

On Wed, Jul 11, 2012 at 2:46 PM, Larry Leung <crealisiss at yahoo.com> wrote:

> Hi,
>     with respect to 2012c south america. San Luis appears to have a
> zone/rule inconsistency. The latest zone indicates using rule SanLuis, but
> the rule is used only until 2009. For dates past 2009 is there consistency?
>
> # San Luis (SL)
>
> Rule    SanLuis 2008    2009    -       Mar     Sun>=8  0:00    0       -
> Rule    SanLuis 2007    2009    -       Oct     Sun>=8  0:00    1:00    S
>
> Zone America/Argentina/San_Luis -4:25:24 - LMT  1894 Oct 31
>                         .
>                         .
>                         .
>                         -3:00   Arg     AR%sT   2008 Jan 21
>                         -4:00   SanLuis WAR%sT
>
> Well...

I'm not sure how this is treated "by the book" (however, I know, at least
in my linux's libc it 'just works').

To make a long story short, by 2009 Argentina stopped using DST and all of
the country is at UTC-0300.

However, the San Luis Province call this "Western Argentina Daylight
Savings Time" because they consider that WART is at UTC-0400 and they "got
stuck" in WARST (at UTC-0300), whereas the rest of the country calls this
Argentina Time at UTC-0300.

Rereading the southamerica source, I also notice there is no 'Arg' rule
after 2009 but, since there are no invocation of any of these rules after
2008, I think it's just fine.





-- 
Mariano Absatz - El Baby
www.clueless.com.ar
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