BEGIN:VCALENDAR VERSION:2.0 PRODID:-//hacksw/handcal//NONSGML v1.0//EN TZ:+00 BEGIN:VEVENT DTSTART:20211029T000000Z DTEND:20211029T000000Z SUMMARY:91AV Communicators' Challenge '21: Oral abstract deadline due before 29th October 2021 LOCATION:Online,United Kingdom END:VEVENT END:VCALENDAR