The NTP service allows the synchronization of the local system time between a computer or a group of computers and a server, with a precision in the order of 10 ms. Using this service, any computer connected to our network can synchronize the system time with our NTP server (ntp.dei.uc.pt).
Right-click on the system time in the taskbar and select "Adjust Date/Time". Activate automatic synchronization using the server "ntp.dei.uc.pt":
/etc/ntp.conf
and define the NTP Server:$ server ntp.dei.uc.pt
/etc/ntp/step-tickers
and define the same server:$ ntp.dei.uc.pt
$ /sbin/chkconfig --level 35 on
$ service ntpd restart