Time Sync with Domain Controller

I'm trying to sync the time on several workstations with the domain controller on a standalone network. When I do a NET TIME /SET command from a workstation on the domain, I receive the message:
> Current time at \\domain_controller is 3/12/2009 10:00 AM
> Local time (GMT-04:00) at \\domain_controller is 3/12/2009 11:00 AM
> The current local clock is 3/12/2009 10:00 AM
> Do you want to set the local computer's time to match the time at \\domain_controller?

When I accept the time change it changes it to the current time on the domain controller (10 AM), which is the incorrect time. The time on the DC is 11 AM when RDPing into the server. I don't understand where the two times are coming from. When I run a NET TIME command on the DC it shows the accurate time (Current time at \\domain_controller is 3/12/2009 11:00 AM).

Thanks for your help ...