BEGIN:VCALENDAR
VERSION:2.0
PRODID:spatie/icalendar-generator
BEGIN:VTIMEZONE
TZID:UTC
BEGIN:STANDARD
DTSTART:20260204T210603
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:6ae7a9bb2d234
DTSTAMP:20261101T210603Z
SUMMARY:Istanbul
DTSTART:20261107T180000Z
DTEND:20261107T180000Z
END:VEVENT
END:VCALENDAR