BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Novus Examples//P6 Calendar//EN
BEGIN:VTIMEZONE
TZID:America/Toronto
BEGIN:DAYLIGHT
DTSTART:20260308T020000
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20261101T020000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:p6-dst-toronto@novus.example
DTSTAMP:20260731T120000Z
DTSTART;TZID=America/Toronto:20260308T033000
DTEND;TZID=America/Toronto:20260308T040000
SUMMARY:DST normalization check
END:VEVENT
END:VCALENDAR