Our templates are set to the time zone Etc/UTC. For Austrian time, change it on your server.
Setting the time zone
timedatectl set-timezone Europe/Vienna
Showing the available time zones
timedatectl list-timezones
Checking the result
timedatectl
The output shows the time zone that is set and whether the clock is synchronized.
The change takes effect immediately, but services that are already running sometimes only pick it up after a restart. Restart any services whose logs keep showing the wrong time.