BEGIN:VCALENDAR
VERSION:2.0
PRODID:spatie/icalendar-generator
BEGIN:VTIMEZONE
TZID:UTC
BEGIN:STANDARD
DTSTART:20251111T221015
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:6a77a947def25
DTSTAMP:20260808T221015Z
SUMMARY:Istanbul
DTSTART:20270709T170000Z
DTEND:20270709T170000Z
END:VEVENT
END:VCALENDAR