Updating computer clock
Microsoft Windows has long had the ability to set its date and time clock by synchronizing with a timekeeping server via the Internet.
As long as your PC is connected to a functioning Internet connection and the selected server is online, the synchronization process should just take a few seconds.
You’ll see Windows report that “The clock was successfully synchronized.” You can now click OK to close the open windows.
While most users will be fine with the default server selection from Microsoft and the NIST, there are many other public and private time servers (NTP) you can find online and use to synchronize your Windows PC.
Once you’ve made your server selection, click Update Now to initiate a synchronization.
To program Windows to do that, just right-click on the time in the systems tray and go to Date and Time Properties and click on the Internet Time tab, placing a check in Automatically synchronize with an Internet time server (see screenshot at right).