BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//gyrobase/iCalendar//NONSGML v1.0//EN
BEGIN:VEVENT
DTSTART:20111003T103000
RRULE:FREQ=MONTHLY;INTERVAL=1;UNTIL=20140525;BYDAY=1MO,1SA,1TU
SUMMARY:Free facility tours
END:VEVENT
BEGIN:VEVENT
DTSTART:20111003T123000
RRULE:FREQ=MONTHLY;INTERVAL=1;UNTIL=20140525;BYDAY=1MO,1SA,1TU
SUMMARY:Free facility tours
END:VEVENT
END:VCALENDAR