An .ics file (iCalendar) is what you download when you « subscribe » to a calendar. A calendar's web page may hide the details of a private appointment, while the .ics file often contains all of them: title, place, description, status. Paste the address of a Lab .ics file or choose a file. Times are shown in Paris time.

or choose a file

In real life: any text editor, or importing into a test calendar. Badly configured « public » Google or Outlook calendars publish the full details of appointments in their .ics feed; times are often in universal time (UTC, Z suffix): for Paris, add 2 h in summer, 1 h in winter.