BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//gyrobase/iCalendar//NONSGML v1.0//EN
BEGIN:VEVENT
DTSTART:20120610T180000
RRULE:FREQ=WEEKLY;INTERVAL=1;UNTIL=20140620;BYDAY=SU
SUMMARY:Sunday Evensong
END:VEVENT
END:VCALENDAR