Daily local calendars backup

Hello, I'm looking for an app (or some other solution) to periodically backup my local calendars, possibly daily. No cloud sync needed, I just need a local file

My current setup is: remote calDav calendar server that is synced locally via DAVx5. I would like the local calendars that are synced locally by DAVx5 to be exported every day, with no manual interaction from me needed.

Is there any app that does it?