BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//PIMUTILS.ORG//NONSGML khal / icalendar //EN
BEGIN:VTIMEZONE
TZID:America/Bogota
BEGIN:STANDARD
DTSTART;VALUE=DATE-TIME:19930403T230000
TZNAME:COT
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
SUMMARY:An Event
DTSTART;TZID=America/Bogota;VALUE=DATE-TIME:20140409T093000
DTEND;TZID=America/Bogota;VALUE=DATE-TIME:20140409T103000
DTSTAMP;VALUE=DATE-TIME:20140401T234817Z
UID:event_no_dst
END:VEVENT
END:VCALENDAR