kshutdown
Graphical shutdown utility
KShutdown is a graphical shutdown utility that works with many Desktop Environments. It allows you to turn off or suspend a computer at a specified time. It features various time and delay options, command-line support, and notifications.
There is no official package available for openSUSE Leap 15.5Distributions
openSUSE Tumbleweed
SUSE SLE-15-SP1
Unsupported distributions
The following distributions are not officially supported. Use these packages at your own risk.