You can export appointments in the iCal format. You can e.g. use this format to exchange appointments with other calendar applications. You can export single appointments or all appointments from a calendar.
How to export single appointments:
Depending on the view, you have the following possibilities:
Click on an appointment in a calendar view. Click the More actions icon in the pop-up.
Select an appointment or multiple appointments in the list view. Click the More actions icon in the toolbar.
Click on Export.
Result: The iCAL file with the appointments exported will be created in the download folder.
How to export all appointments from a calendar:
Select a personal or public calendar in the folder view.
Click the Actions icon next to the calendar. Click on Export.
Result: The iCAL file with the appointments exported will be created in the download folder.