BEGIN:VCALENDAR
VERSION:2.0
PRODID:Microsoft Exchange Server 2010
BEGIN:VTIMEZONE
TZID:Tokyo Standard Time
BEGIN:STANDARD
DTSTART:16010101T000000
TZOFFSETFROM:+0900
TZOFFSETTO:+0900
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:16010101T000000
TZOFFSETFROM:+0900
TZOFFSETTO:+0900
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID="Tokyo Standard Time":20170224T120000
DTEND;TZID="Tokyo Standard Time":20170224T123000
UID:blafoobar
SUMMARY:this is an event
END:VEVENT
END:VCALENDARD