gnome-calendar from home:asdhio project
Select Your Operating System
Add repository and install manually
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:asdhio/16.0/home:asdhio.repo zypper refresh zypper install gnome-calendar
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:asdhio/15.6/home:asdhio.repo zypper refresh zypper install gnome-calendar