Syncing between a nextcloud and a Google calendar both ways with Caldav is not supported (we develop a universal calendar for TERMINO.gv.at, expected in 2023).
Syncing between a nextcloud and a Google calendar both ways with Caldav is not supported (see [open issue](https://github.com/nextcloud/calendar/issues/2766)).
**Holiday calendars** for AT and DE are offered for fairapps basic and pro users. Or create and import your own from [here](https://www.thunderbird.net/en-US/calendar/holidays/).
**Holiday calendars** for AT and DE are offered for fairapps basic and pro users. Or create and import your own from [here](https://www.thunderbird.net/en-US/calendar/holidays/).
### Thunderbird
### Thunderbird
Install the Thunderbird add-ons [TBsync](https://addons.thunderbird.net/en-US/thunderbird/addon/tbsync/) and [Provider for CalDAV & CardDAV](https://addons.thunderbird.net/en-US/thunderbird/addon/dav-4-tbsync/) and follow [this guide](https://docs.nextcloud.com/server/19/user_manual/pim/sync_thunderbird.html). As Server URL enter https://faircloud.eu/nextcloud
Since Thunderbird 102 there is no need to install an add-on for syncing calendars ir address books. Click on `New Calendar` and select `On the Network`. As Server URL enter `faircloud.eu`. Then all calendars are listed and choose which you want to sync. Same with address books, here you do a `Add CardDav Address Book`.
Alternatively use manual (old) method: follow [this guide](https://docs.nextcloud.com/server/19/user_manual/pim/sync_thunderbird.html#the-old-method-manually-subscribing-to-calendars) and use a link like this: https://faircloud.eu/nextcloud/remote.php/dav/calendars/your_fairlogin_username/personal/ - you find the correct link at each faircloud calendar behind the three dots.
Alternatively, you can use the TBsync add-on, see https://docs.nextcloud.com/server/26/user_manual/en/groupware/sync_thunderbird.html
Or use the manual (old) method: follow [this guide](https://docs.nextcloud.com/server/19/user_manual/pim/sync_thunderbird.html#the-old-method-manually-subscribing-to-calendars) and use a link like this: https://faircloud.eu/nextcloud/remote.php/dav/calendars/your_fairlogin_username/personal/ - you find the correct link at each faircloud calendar behind the three dots.
