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METHOD:PUBLISH
X-WR-CALNAME: Calendar | Brains 
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BEGIN:VEVENT
UID:calendar:1572:field_date:1:0
SUMMARY:Christmas Day
DTSTAMP;TZID=Europe/London;VALUE=DATE-TIME:20100910T023242
DTSTART;TZID=Europe/London;VALUE=DATE-TIME:20101225T000000
DTEND;TZID=Europe/London;VALUE=DATE-TIME:20101225T000000
RRULE;RRULE:FREQ=YEARLY;INTERVAL=1;UNTIL=20191225T000000Z;WKST=SU
URL;VALUE=URI:http://brains.parslow.net/node/1572
END:VEVENT
END:VCALENDAR