Is it possible to set the time on a managed physical or virtual servers through POA?
POA is not responsible for managing time accuracy on managed servers. The POA Control Panel does not provide ability to manage time on managed servers.
To prevent problems with time synchronization on managed servers Provider can consider configuring NTP server (in case of physical server it should be enabled on the server, in case of Virtuozzo container - on the hardware node) in PA environment.
Instructions are available in the POA documentation: 'Synchronizing VPS Hardware Node with World Time'.