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
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20261025T010000
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:GMT
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20260830T070724Z
UID:2026-swim-tests-thursday
DTSTART;TZID=Europe/London:20260924T200000
DTEND;TZID=Europe/London:20260924T220000
LOCATION:Byw'n Iach Bangor (Fitness & Swimming) North Wales\, Bangor
SUMMARY:2026 Swim Tests (Thursday)
END:VEVENT
END:VCALENDAR