BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Europe/London
BEGIN:DAYLIGHT
DTSTART:20260329T020000
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZNAME:BST
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BEGIN:STANDARD
DTSTART:20261025T010000
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
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BEGIN:VEVENT
DTSTAMP:20260818T100353Z
UID:dinghy-sailing-give-it-a-go
DTSTART;TZID=Europe/London:20260916T090000
DTEND;TZID=Europe/London:20260916T160000
LOCATION:Other - Further Out
SUMMARY:Dinghy Sailing: Give it a Go! 
END:VEVENT
END:VCALENDAR