BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//gyrobase/iCalendar//NONSGML v1.0//EN
BEGIN:VEVENT
DTSTART:20130428T120000
DTEND:20130428T170000
RRULE:FREQ=MONTHLY;INTERVAL=1;UNTIL=20140520;BYDAY=5SU
SUMMARY:Clean Sweep Sale
END:VEVENT
END:VCALENDAR