Dimension 4

This program is one of the fastest and most convenient ways to synchronize the time of your computer on the Windows platform. The program supports several well-known Internet time protocols (SNTP, Time/udp, Time/tcp and HTTP) and ships with a large list of public time servers. When you are connected to the Internet, the program sends a request to the chosen server at the interval you specify, the server sends back the exact time, and Dimension 4 then performs the calculations and sets your computer's clock to within a few milliseconds. It runs in the system tray or as a Windows service, logs every synchronization and can graph its history.

Dimension 4 keeps your computer clock accurate to within milliseconds by synchronizing it with Internet time servers automatically.