For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Mark__T/openSUSE_Tumbleweed/home:Mark__T.repo
zypper refresh
zypper install timekpr-next
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Mark__T/15.6/home:Mark__T.repo
zypper refresh
zypper install timekpr-next
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Mark__T/15.5/home:Mark__T.repo
zypper refresh
zypper install timekpr-next
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Mark__T/15.4/home:Mark__T.repo
zypper refresh
zypper install timekpr-next