BEGIN:VCALENDAR VERSION:2.0 PRODID:-//hacksw/handcal//NONSGML v1.0//EN TZ:+00 BEGIN:VEVENT DTSTART:20210420T000000Z DTEND:20210420T000000Z SUMMARY:Workshop on Open-Source Tools in 91AV: Standard registration deadline due before 20th April 2021 LOCATION:United Kingdom END:VEVENT END:VCALENDAR