It depends on whether you have ntp package installed or not, you can check it in /system packages.
If it is installed you can configure ntp client, if not you can configure sntp client, which is practically the same.
Now to configure ntp client go to System ntp client, there select enabled, mode=unicast, primary server=europe.pool.ntp.org
and secondary server=time.nist.gov
@gcs we posted at the same time