需要 openSUSE Slowroll ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/X11:COSMIC:Apps/openSUSE_Slowroll/X11:COSMIC:Apps.repo
zypper refresh
zypper install chronos
需要 openSUSE Factory ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/X11:COSMIC:Apps/openSUSE_Factory/X11:COSMIC:Apps.repo
zypper refresh
zypper install chronos
需要 16.0 ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/X11:COSMIC:Apps/16.0/X11:COSMIC:Apps.repo
zypper refresh
zypper install chronos