NetTime

The NetTime application was developed to be a program which lets you synchronize your computers clock with any Internet atomic clock (time server). It uses a high precision network time protocol (NTP) which provides accuracy of several milliseconds depending on the characteristics of the synchronization source and network paths.
NetTime has a very simple interface, you can start using it immediately without reading any manuals. Just click the Request Time and then Synchronize Local PC buttons in order to set the exact time on your computer. You can configure NetTime to do its task fully automatically. It can be launched and kept on the system stay minimized into a taskbar icon and synchronize the time periodically.
IMPORTANT NOTE: You must have the correct time zone selected on your computer AND have the correct daylight saving time rules in place in your operating system in order to have the Internet Time synchronize process work properly. If the dates for Daylight Saving Time (DST) changed recently in your area, you must update your operating system with the new rules. Microsoft releases patches when necessary for newer versions of Windows, but with older versions, you may have to update the registry yourself or find a third-party tool to do it.System requirementsMain Memory (RAM):
At least a minimum of 32 MB RAM should be available on your system.
Hard Drive Space:
1 MB for the program files plus some additional space for backup files (minimal).