NISTSync

NISTSync is freeware to synchronize your PC clock to the Internet time servers provided by NIST. Intended use is where the precise time (to within +/-10 milliseconds) is important.

For Astronomical use, the timing of occultations, search for extra-solar planets, and measuring precise position of objects are some of the tasks that may require this level of precision.

Sync button performs an immediate synchronization with the Internet clocks and set the PC clock. The time and date are displayed next to the button.