BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//gyrobase/iCalendar//NONSGML v1.0//EN
BEGIN:VEVENT
DTSTART:20121208T090000
DTEND:20121208T140000
RRULE:FREQ=WEEKLY;INTERVAL=1;UNTIL=20140521;BYDAY=SA
SUMMARY:Big Sale
END:VEVENT
END:VCALENDAR