How Do I Configure my Domain Server Server to use an Internet Time Service?

How To Configure Time Services to Use an Internet Time Server

Run the following command from an Administrative command prompt, on your Domain Controller(s).

net stop w32time

w32tm /config /syncfromflags:manual /manualpeerlist:"0.uk.pool.ntp.org 1.uk.pool.ntp.org"

w32tm /config /reliable:yes

net start w32time

w32tm /resync