Move Windows time source to new server

On the old domain controller, run the following at command prompt w32tm /config /syncfromflags:domhier /reliable:no /update

net stop w32time && net start w32time

On the new domain controller, run the following at command prompt w32tm /config /manualpeerlist:time.windows.com /syncfromflags:manual /reliable:yes /update

net stop w32time && net start w32time

That’s it. All the computers in your domain should automatically synchronize.