Someone

BEGIN:VCALENDAR
CALSCALE:GREGORIAN
PRODID:-//Ximian//NONSGML Evolution Calendar//EN
VERSION:2.0
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:/softwarestudio.org/Olson_20011030_5/Europe/London
X-LIC-LOCATION:Europe/London
BEGIN:DAYLIGHT
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
TZNAME:BST
DTSTART:19700329T010000
RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=-1SU;BYMONTH=3
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
TZNAME:GMT
DTSTART:19701025T020000
RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=-1SU;BYMONTH=10
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:20061206T210151Z-5879-500-1-3@horizon
DTSTAMP:20061206T220051Z
DTSTART;TZID=/softwarestudio.org/Olson_20011030_5/Europe/London:
 20061206T220000
DTEND;TZID=/softwarestudio.org/Olson_20011030_5/Europe/London:
 20061206T230000
SUMMARY:Foo2
CREATED:20061206T210153
LAST-MODIFIED:20061206T220046
CLASS:PUBLIC
TRANSP:OPAQUE
SEQUENCE:1
ORGANIZER;CN=Foo Bar:MAILTO:foo@example.com
END:VEVENT
END:VCALENDAR