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METHOD:PUBLISH
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TZID:Europe/London
BEGIN:DAYLIGHT
DTSTART:20180325T020000
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZNAME:BST
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DTSTART:20181028T010000
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BEGIN:VEVENT
DTSTAMP:20260413T093544Z
UID:cumsa-s-freshers-dinner
DTSTART;TZID=Europe/London:20180921T180000
DTEND;TZID=Europe/London:20180921T220000
LOCATION:TBC 
SUMMARY:CUMSA's Freshers' Dinner 
END:VEVENT
END:VCALENDAR