BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-2023
BEGIN:VEVENT
UID:1
SUMMARY: Some event ':'
DTSTART;TZID="Western/Central Europe";VALUE=DATE-TIME:20211101T160000
DTEND;TZID="Western/Central Europe";VALUE=DATE-TIME:20211101T163000
DTSTAMP:20211004T150245Z
END:VEVENT
END:VCALENDAR