BEGIN:VCALENDAR
VERSION:2.0
PRODID:spatie/icalendar-generator
BEGIN:VTIMEZONE
TZID:UTC
BEGIN:STANDARD
DTSTART:20251208T040846
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:6a9a444e7e0ce
DTSTAMP:20260904T040846Z
SUMMARY:Istanbul
DTSTART:20261107T180000Z
DTEND:20261107T180000Z
END:VEVENT
END:VCALENDAR