kalendar from home:KaratekHD:kirigami project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:KaratekHD:kirigami/openSUSE_Tumbleweed/home:KaratekHD:kirigami.repo zypper refresh zypper install kalendar