kalendar
Calendar app Calendar application that allows you to manage your tasks and events. Kalendar supports both local calendars as well as a multitude of online calendars: Nextcloud, Google® Calendar, Outlook®, Caldav, and many more.
There is no official package available for openSUSE Leap 15.5Distributions
openSUSE Tumbleweed
Debian Unstable
Debian Testing
Debian 11