BEGIN:VCALENDAR
VERSION:2.0
PRODID:spatie/icalendar-generator
BEGIN:VTIMEZONE
TZID:UTC
BEGIN:STANDARD
DTSTART:20251022T054555
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:6a5c649381c07
DTSTAMP:20260719T054555Z
SUMMARY:Istanbul
DTSTART:20270327T180000Z
DTEND:20270327T180000Z
END:VEVENT
END:VCALENDAR