Free chronos atomic clock synchronizer software for windows

Maxiimus - Atomic Clock Synchronization Utility is a program that will query one of several atomic clocks operated by various governments and academic institutions using the Internet. You can then use these clocks to synchronize your Windows system clock. A scheduler utility is also included so that you can adjust your system clock automatically.

Synchronize system time on your PC with highest precision atomic clock servers 1Click Time Synchronizer is a utility that helps you keep your system time always accurate.
1Click Time Synchronizer can be used to synchronize the system time with the highest precision atomic clock servers on the Internet using the Network Time Protocol.
System requirements:
- Pentium 166 MHZ or above

Time Synchronizer will synchronize the PCs internal clock with one of the several atomic clocks Time Synchronizer will synchronize the PCs internal clock with one of the several atomic clocks maintained by the United States National Institute of Standards and Technology by using NTP Internet protocol.
Just run the program and press the Get button.
After actual time has been retrived, you can synchronize PCs internal clock by pressing the Set button.
Time Synchronizer supports command line control.
Command line usage: TimeSync.exe [url] [key]
[url] - URL of NTP server
[key] - Time synchronizing key: use Y (yes) or N (no) for an automatic time synchronizing
Example: TimeSync.exe ntp.nasa.gov Y