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:20261010T220739Z
UID:rotawinter-give-warmth-share-kindness-wrap-up-uk
DTSTART;TZID=Europe/London:20261018T170000
DTEND;TZID=Europe/London:20261101T120000
LOCATION:CITY SPACE 
SUMMARY:ROTAWINTER: GIVE WARMTH\, SHARE KINDNESS\, WRAP UP UK!
END:VEVENT
END:VCALENDAR