timezone for Mexico

[Guillermo Mallen F.]

I just checked and this year will have a "horario de verano" from 
april first to october 27 (both sundays) in central Mexico and the change 
will be made at two am in the next day.

I don't know if this will remain unchanged in the next years as it is 
stupid to change time in places with latitudes between the tropics as the 
length of the day does not change much. It seems that people in FIDE know 
little about Geography/Astronomy.
Regards

Guillermo M. Mallen

mallen at kin.cyborg.com.mx