From: "-0500" BEGIN:VTIMEZONE TZID:Guadalajara, Mexico City, Monterrey X-ENTOURAGE-TZID:66 X-ENTOURAGE-CFTIMEZONE:America/Mexico_City BEGIN:STANDARD DTSTART:20001029T020000 RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=-1SU;BYMONTH=10 TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:Standard Time END:STANDARD BEGIN:DAYLIGHT DTSTART:20010401T020000 RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=1SU;BYMONTH=4 TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:Daylight Savings Time END:DAYLIGHT END:VTIMEZONE EFTA00503579