NTP (Network Time Protocol) is used to synchronize your system's time with an online server.
NTP can also be used to serve time for a network.

All Microsoft Windows versions since Windows 2000 include the Windows Time Service, which has the ability to sync the computer clock to an NTP server. However, the version in Windows 2000 only implements Simple NTP, and violates several aspects of the NTP version 3 standard.

First we study how to set the Windows 2000 time service as a NTP time-server. It shows how to modify registry entries to set the Microsoft Windows Time Service. The Windows Time service allows the network to provide synchronisation of all machines within one domain.

Configure Windows 2000 Time Service

Windows 2000 has an integrated time synchronisation service, installed by default, which can synchronise to a NTP Server. So, by manipulating registry settings, the service can do as both an SNTP client and SNTP server to synchronise other network clients.

Before modifying registry entries it is good to backup the registry settings. The registry can then be restored in the event of problems being encountered. Read more