BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//gyrobase/iCalendar//NONSGML v1.0//EN
BEGIN:VEVENT
DTSTART:20120907T180000
DTEND:20120907T210000
RRULE:FREQ=MONTHLY;INTERVAL=1;UNTIL=20140523;BYDAY=1FR
SUMMARY:Temescal First Fridays
END:VEVENT
END:VCALENDAR