BEGIN:VCALENDAR VERSION:2.0 PRODID:-//hacksw/handcal//NONSGML v1.0//EN TZ:+00 BEGIN:VEVENT DTSTART:20210617T000000Z DTEND:20210617T000000Z SUMMARY:Practical methods for monitoring indoor and outdoor air quality starts on the 17th June 2021 18:30 LOCATION:United Kingdom END:VEVENT END:VCALENDAR