BEGIN:VCALENDAR CALSCALE:GREGORIAN PRODID:-//Example Inc.//Example Calendar//EN VERSION:2.0 BEGIN:VTIMEZONE LAST-MODIFIED:20040110T032845Z TZID:US/Eastern BEGIN:DAYLIGHT DTSTART:20000404T020000 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=4 TZNAME:EDT TZOFFSETFROM:-0500 TZOFFSETTO:-0400 END:DAYLIGHT BEGIN:STANDARD DTSTART:20001026T020000 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10 TZNAME:EST TZOFFSETFROM:-0400 TZOFFSETTO:-0500 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20051222T205953Z CREATED:20060101T150000Z DTSTART;TZID=US/Eastern:$now.year.1:0101T100000 DURATION:PT1H SUMMARY:event 1 UID:2 ORGANIZER;CN=$username1::$cuaddr2: ATTENDEE;CN=$username2::$cuaddr1: END:VEVENT END:VCALENDAR