This software syncs your computer time with atomic clock time servers run by NIST. The software connects to NIST servers in the US and compares the time difference to ensure accurate timekeeping.
Once the comparison is complete, you'll be able to see how much your system differs from the NIST servers. If this difference is greater than 15 seconds, the program will give you the option of adjusting your PC by the displayed amount.
One of the best things about this program is that the overall uncertainty in the comparison should be no worse than +/- 5 seconds under all circumstances. In fact, the uncertainty will often be significantly less than this value, which should give you great confidence in your computer's ability to keep accurate time.
Version 1.1: N/A