<p dir="ltr">The Internet Archive may be of help here… </p>
<p dir="ltr"><a href="http://web.archive.org/web/20070607204502/http://www.cddhcu.gob.mx/bibliot/publica/inveyana/polisoc/horver/">http://web.archive.org/web/20070607204502/http://www.cddhcu.gob.mx/bibliot/publica/inveyana/polisoc/horver/</a></p>
<p dir="ltr">--<br>
Tim Parenti<br>
sent from my Android phone</p>
<div class="gmail_quote">On 7 Dec 2014 11:29, "Alois Treindl" <<a href="mailto:alois@astro.ch">alois@astro.ch</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Paul<br>
<br>
I am looking at the timezone for Mexico City 1950.<br>
<br>
There is a special rules for DST 12 Feb - 31 July 1950, which seems to apply only to Mexico City.<br>
<br>
I need to find out the definition of the geographic area for which this is valid.<br>
<br>
You quote as a source<br>
<a href="http://www.cddhcu.gob.mx/bibliot/publica/inveyana/polisoc/horver/" target="_blank">http://www.cddhcu.gob.mx/<u></u>bibliot/publica/inveyana/<u></u>polisoc/horver/</a><br>
but I cannot access that source.<br>
<br>
Do you happen to keep an offline copy of that source information?<br>
<br>
Best regards<br>
<br>
Alois<br>
</blockquote></div>