Hi :) after a reboot there always is an offset of -3600 sec, when running ntpdate. # timedatectl status | grep local RTC in local TZ: yes Warning: The RTC is configured to maintain time in the local time zone. This RTC in UTC, by calling 'timedatectl set-local-rtc 0'. # timedatectl set-local-rtc 1 Failed to issue method call: Input/output error Sometimes I don't get an output when running "timedatectl set-local-rtc 1". # cat /etc/adjtime LOCAL # ls -l /etc/localtime lrwxrwxrwx 1 root root 33 Feb 17 22:35 /etc/localtime -> /usr/share/zoneinfo/Europe/Berlin For my old Arch Linux install there wasn't this issue. I suspect I make a mistake, I'm missing something now. I already asked at the German forums, but until now without success: https://bbs.archlinux.de/viewtopic.php?id=23477 FWIW I don't have a Windows installed, this machine is a *NIX multi-boot only. I'm aware about the drawbacks and advantages of both, the usage of UTC and local time and in 10 years I never experienced a drawback using local time. At the moment it's simply more comfortable for me, if I've got local time available for the BIOS. The reason for this should be unimportant for this thread. Regards, Ralf