Today I noticed the effect of adding DAV push from https://apps.nextcloud.com/apps/dav_push on the #Nextcloud server hosting my calendar.
I deleted a calendar entry in my desktop calendar while also having the calendar open on my phone and within two seconds it also was deleted there. 🤯
I guess for people in the walled garden ecosystem this is nothing worth mentioning but getting this working so easily while #selfhosting is awesome.

Anyway, huge thanks to @davx5app and @verdigado :)