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Andy Lipscomb escribió el 16/10/08 13:26:
<blockquote
cite="mid:E3827447A4261D4C80192E07BB7E6491061D875D@chaexc01.decosimo.local"
type="cite">
<blockquote>"One historical question... I find that all cities, up
until 1894-10-31 refer to LMT (Lima Mean Time?)... but all have
different offsets... <br>
after that and up until May 1920, all refer to CMT (Córdoba Mean Time)
at a fixed -4:16:48 offset.<br>
<br>
Which is the source for the LMT offsets?... 'cause I'm happily copying
and pasting and for sure introducing errors in the past... not that I'm
afraid of the butterfly effect, but I'd rather not introduce wronful
data..."<br>
</blockquote>
<pre wrap="">
LMT actually stands for Local Mean Time. In other words, average solar time at that location. It can be computed from longitude--each degree of west longitude converts to four minutes behind UTC; otherwise put, a 15-degree longitude difference equals a one-hour LMT difference.
</pre>
</blockquote>
OK, now I get it... I'll find out longitudes of all the cities in
America/Argentina, do the math and propose a patch... but before that...<br>
<br>
today appeared in the Boletín Oficial of the Province of Mendoza the
Provincial Law 7.955
(<a class="moz-txt-link-freetext" href="http://www.gobernac.mendoza.gov.ar/boletin/pdf/20081016-28259-normas.pdf">http://www.gobernac.mendoza.gov.ar/boletin/pdf/20081016-28259-normas.pdf</a>)<br>
<br>
It says that Mendoza will use UTC-03:00 and UTC-04:00... and that the
Provincial Executive Branch (the Governor) has the power to establish
which one will be in effect and when... (along the same lines as the
National Law, but with different time zones)...<br>
<br>
However, neither that Law, nor the Decree #2.807 that promulgates it,
says anything about what will be done in the next few days (or
months)...<br>
<br>
So, it's reasonable to think that at least until March 2009, Mendoza
will keep using UTC-03:00, however, I think we should say that Mendoza
is actually observing DST from its now standard WART (that is, it is at
WARST, which is the same as ART)... am I right? Or is it just to messy?<br>
<br>
I enclose a new patch (always against 2008h).<br>
<br>
<pre class="moz-signature" cols="72">--
Mariano Absatz - "El Baby"
<a class="moz-txt-link-abbreviated" href="mailto:baby@baby.com.ar">baby@baby.com.ar</a>
<a class="moz-txt-link-abbreviated" href="http://www.clueless.com.ar">www.clueless.com.ar</a>
</pre>
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