We have 2 replicated W2K8R2 DC's.
I had updated one (DC1) with w32tm to get manual updates from asia NTP. Everything syncs correctly.
My question: (In order to learn): How does this propagates to the replica (e.g. DC2)?
So when you change the time on your DC which holds the PDC Emulator Role, it will sync it to your other DC's.