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:20260609T104451Z
UID:1067771
DTSTART;TZID=Europe/London:20260624T180000
DTEND;TZID=Europe/London:20260624T200000
LOCATION:Norwegian Ambassador's Residence\, 10 Palace Green\, London\, UK
SEQUENCE:1780395645
SUMMARY:NBCC & the Norwegian Embassy's Summer Reception at the Ambassador's
  Residence
END:VEVENT
END:VCALENDAR