I am trying to set the time, using e.g.

date -s "11/20/2003 12:00:00"

however, after a few moments, the system time resets to the current time. What am I doing wrong?

NTP should not get a different time, as this is a NTP server that has no connection to any other NTP server.


if you have the npt > apt-get install ntp. You must stopping or uninstalling the service doesn't help.

timedatectl set-ntp 0 (off > sync disabled)
timedatectl set-ntp 1 (on > sync enabled)

Disable with timedatectl set-ntp 0 then you can change date:

date --set 1998-11-02 
date --set 21:08:00

see Maintaining Time on Debian - Datetime and NTP client and server

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