BEGIN:VCALENDAR
BEGIN:VEVENT
SUMMARY:VIScon Hackathon
DTSTART:20211015T150000
DTEND:20211017T163500
DESCRIPTION:Interested in hacking away at a problem for 36+ hours? You can
  expect interesting challenges as well as professional support at the VISc
 on Hackathon. Everything else is taken care of.
END:VEVENT
END:VCALENDAR