There are a few packages that do that, here's one that does two-way syncing: https://github.com/dengste/org-caldav https://github.com/dengste/org-caldav I use

There are a few packages that do that, here's one that does two-way syncing: https://github.com/dengste/org-caldav https://github.com/dengste/org-caldav I use it to sync with a Radicale server.