BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//hacksw/handcal//NONSGML v1.0//EN
BEGIN:VEVENT
DTSTAMP:20191224T230000Z
DTSTART:20191224T230000Z
DTEND:20191225T010000Z

SUMMARY:Closed for Christmas Eve
DESCRIPTION:
END:VEVENT
END:VCALENDAR