GOSH has a calendar but I keep missing the community calls as they are not in my own calendar in Thunderbird.
There is a huge amount of advice online about how to subscribe to ones own google calendar in Thunderbird. However, I can’t see a way to subscribe to a public google calendar in Thunderbird. Does anyone know of a magic .ics link hiding away?
Could not find a way to get an .ics, but there is a magic iCal link I am sending your way via PM (as there are many warnings not to make that public on the page where it can be generated).
After confirming that this works, I am happy to share it with other people that need it!
It is now in my calendar 
. I am not sure if it auto-updates as things change. I’ll have to let you know.