It is possible to set date and time if connected via cable by clicking on “Set from PC clock” if the system is not connected in remote management, otherwise, once connected (via LAN/via GMS/via WiFi), date and time will be automatically acquired by the server.
If you are connected via Web or Offline ignore these parameters, as in the former case they are already set even though you will see all zeros, in the latter case they will not even be displayed.