BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//gyrobase/iCalendar//NONSGML v1.0//EN
BEGIN:VEVENT
DTSTART:20111127T190000
RRULE:FREQ=WEEKLY;INTERVAL=1;UNTIL=20140519;BYDAY=SU
SUMMARY:salsa with lessons
END:VEVENT
END:VCALENDAR