BEGIN:VCALENDAR PRODID:-//hacksw/handcal//NONSGML v1.0//EN BEGIN:VEVENT DTSTART;TZID=Europe/London:20180428T100000 DTEND;TZID=Europe/London:20180428T110000 LOCATION: SUMMARY:HCUK Annual day of Public Service DESCRIPTION: METHOD:PUBLISH END:VEVENT END:VCALENDAR