Install calendarserver by entering the following commands in the terminal:
sudo apt update sudo apt install calendarserver
Description:
Apple's Calendar and Contacts Server
The open source Calendar and Contacts Server project is a standards-compliant server implementing the CalDAV and CardDAV protocols. It provides a shared location on the network allowing multiple users to store and edit calendaring and contact information.
Homepage: https://www.calendarserver.org
Version: 9.1+dfsg-1
Section: universe/python