BEGIN:VCALENDAR VERSION:2.0 PRODID:-//开云体育 Inc//开云体育 Calendar//EN METHOD:CANCEL CALSCALE:GREGORIAN BEGIN:VEVENT STATUS:CANCELLED UID:calendar.18539@groups.io DTSTAMP:20191018T025618Z ORGANIZER;CN=yancophm@groups.io Group:mailto:yancophm@groups.io DTSTART:20191128 DTEND:20191129 SUMMARY:Museum Open on Sunday RECURRENCE-ID;20191128 SEQUENCE:0 END:VEVENT END:VCALENDAR