I have an Ubuntu Server 18.04.1 LTS in a lab environment where I need to set the date a couple of years back in time (e.g. 2016-04-22). I can set the older date/time without any issues but the OS always resets the date/time to 2018-01-28 15:58 whenever I power the server back on. How can I prevent this?
I found a log message in /var/log/syslog indicating that the OS is switching to the previous build time: systemd: System time before build time, advancing clock.