El Salvador
Bobby Rullo
br at osafoundation.org
Wed Sep 26 19:07:16 UTC 2007
Thanks Rodrigo,
That makes sense now, although I think it would be clearer to change
the last Zone line to stop in 1989 and add one more Zone line like so:
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-6:00 Salv C%sT 1989
-6:00 - CST
The conceptual block that I had to overcome was that I thought of
Rules as things that happen every year, and if there's not a rule for
that year, it doesn't apply. In other words I didn't grok that "the
last rule sticks"
A FAQ would be great, or at least an update to the man page for zic -
the man page is great as a reference to what each particular field
means, but not so great as a high level explanation of the format.
take care,
Bobby
On Sep 26, 2007, at 11:49 AM, Rodrigo Severo wrote:
> This is definitely a FAQ. Is there a page with tz FAQ?
>
> Rules define change in the local time. Local time doesn't ends. :)
>
> The year 1988 is the last year that there is any change. The last
> change mentioned - switch to local time + 0:00 in the last Sun of
> september - defines the time indefinitely.
>
>
> Rodrigo Severo
>
>
> On 9/26/07, Bobby Rullo <br at osafoundation.org> wrote:
> Hello,
>
> I have written a timezone library (including a parser) in JavaScript
> and am running into a bit of confusion with this particular Zone and
> Rule:
>
> # Rule NAME FROM TO TYPE IN ON AT
> SAVE LETTER/S
> Rule Salv 1987 1988 - May Sun>=1 0:00
> 1:00 D
> Rule Salv 1987 1988 - Sep lastSun 0:00
> 0 S
> # There are too many San Salvadors elsewhere, so use America/
> El_Salvador
> # instead of America/San_Salvador.
> # Zone NAME GMTOFF RULES FORMAT [UNTIL]
> Zone America/El_Salvador -5:56:48 - LMT 1921 #
> San Salvador
> -6:00 Salv C%sT
>
> My question is, what is the applicable Rule for any date after 1988?
> The last "Salv" Rule ends in 1988, and the Zone states that Salv is
> the Rule from 1921 on (no UNTIL specified)
>
> I've done a "man zic" hoping to see something like "If there is no
> applicable Rule, just use the basic offset and assume that the LETTER
> is 'S'", but I could not find anything like that. Is that the correct
> behavior?
>
> Thanks
>
> Bobby
>
>
>
> --
> ----------------------------------------------------------------------
> -----------------
> Rodrigo Severo
>
> Fábrica de Idéias
> SBS Quadra 2 - Bloco S - Ed. Empire Center - Sala 1.301
> Brasília - DF - CEP 70070-904
> Tel. (61) 3321-1357 Fax (61) 3223-1712
> ----------------------------------------------------------------------
> -----------------
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