Time Sync Pro is an application that connects to one of the many atomic clock web servers, downloads the correct time to your PC, and adjusts it, so your computer shows the correct time.
Time Sync Pro has many features including the automatic adjustment of your computer clock.
It can automatically update the time every 3 hours.
Do not close the program when you turn off your computer in order to switch to automatic mode.
Time Sync Pro minimizes to your system tray, so it's out of your way while you work.