BEGIN:VCALENDAR
PRODID:-//citadel.org//NONSGML Citadel calendar//EN
VERSION:2.0
BEGIN:VTIMEZONE
TZID:/citadel.org/20171102_1/Europe/London
LAST-MODIFIED:20171102T203623Z
X-LIC-LOCATION:Europe/London
X-PROLEPTIC-TZNAME:LMT
BEGIN:STANDARD
TZNAME:GMT
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
DTSTART:19701025T020000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
BEGIN:STANDARD
TZNAME:GMT
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
DTSTART:19700101T000000
END:STANDARD
END:VTIMEZONE
END:VCALENDAR