Synchronize Internet Time in a Windows script?

See the reference for W32tm, "A tool used to diagnose problems occurring with Windows Time": http://technet.microsoft.com/en-us/library/bb491016.aspx. Also, w32tm /?

Use w32tm /resync. You may also need to set a server with net time if you haven't done that yet.

@echo off
net start W32Time
w32tm /resync
echo sync complete

1. Copy this code to Notepad and save it as a .bat file.
2. Run the batch file with Administrator privileges or schedule a task to run this batch file from the Task Scheduler, as required.

Note: This required Administrator privileges and a working Internet connection.