Neutron

Do you know if your Windows clock is telling you the right time? Would you like to synchronize it with a service that specializes in keeping track of the real time?

Neutron is a free application for Windows that you can use to check and see if your computer's clock is working correctly. If it's not, then you can synchronize the time to match that of a specialized server.

The program itself is very simple, since it only performs two actions: displaying the real time compared to your computer's clock, and synchronizing the two to match the first option.

If you're not sure how accurate your clock is, Neutron will be of great assistance.