BEGIN:VCALENDAR
VERSION:2.0
PRODID:manually_generated
X-WR-TIMEZONE:Europe/Brussels
X-WR-CALNAME:MyCalendar
X-WR-CALDESC:Description of calendar
BEGIN:VEVENT
UID:match_1025179
DTSTAMP:20210911T014015Z
DESCRIPTION:When X-WR-TIMEZONE is ignored, this is a floating event, when it is interpreted, the event is assumed to be in the Europe/Brussels timezone
DTSTART;TZID=Europe/Brussels:20210916T210000
DTEND;TZID=Europe/Brussels:20210916T224500
SUMMARY:X-WR-TIMEZONE no timezone
END:VEVENT
END:VCALENDAR