BEGIN:VCALENDAR
VERSION:2.0
PRODID:collective/icalendar
X-WR-CALNAME;VALUE=TEXT:Test RDATE
BEGIN:VTIMEZONE
TZID:America/Vancouver
BEGIN:STANDARD
DTSTART:20221106T020000
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
RDATE:20231105T020000
TZNAME:PST
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:20230312T020000
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
RDATE:20240310T020000
TZNAME:PDT
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
UID:1
DESCRIPTION:Test RDATE
DTSTAMP;TZID=America/Vancouver:20230920T120000
DTSTART;TZID=America/Vancouver:20230920T120000
DTEND;TZID=America/Vancouver:20230920T140000
EXDATE;TZID=America/Vancouver:20231220T120000
RDATE;VALUE=PERIOD;TZID=America/Vancouver:20231213T120000/20231213T150000
RRULE:FREQ=MONTHLY;COUNT=9;INTERVAL=1;BYDAY=+3WE;BYMONTH=1,2,3,4,5,9,10,11,
 12;WKST=MO
SUMMARY:Test RDATE
END:VEVENT
END:VCALENDAR