BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//gyrobase/iCalendar//NONSGML v1.0//EN
BEGIN:VEVENT
DTSTART:20111204T110000
DTEND:20111204T160000
RRULE:FREQ=MONTHLY;INTERVAL=1;UNTIL=20140522;BYDAY=1SU
SUMMARY:Open Studios
END:VEVENT
END:VCALENDAR