BEGIN:VCALENDAR PRODID:-//hacksw/handcal//NONSGML v1.0//EN BEGIN:VEVENT DTSTART;TZID=Europe/London:20171207T183000 DTEND;TZID=Europe/London:20171207T193000 LOCATION: SUMMARY:A Sparkling Christmas Reception DESCRIPTION: METHOD:PUBLISH END:VEVENT END:VCALENDAR