Display public calendars from different locations


I wanted to display a calander on a public web page that merges several public calendars issued from different locations (e.g., some NextCloud private instance, framagenda, etc.)

I can do that on my own calendar when connected to my NextCloud. I can also create a public link with several calendar from the same NextCloud instance (by merging tokens in the URL). However, I haven’t found how to do that with calendars from several hosts.

Is it possible?