Windows 2008 PDC - Ext. Time check different than official us time

I have a very strange issue here. My IT Coworker noticed that our system time (PDC, Servers and Workstations) are off by 4-5 minutes from our phone. While checking the following website:

http://www.time.gov/timezone.cgi?Pacific/d/-8/java for PST time, the phone and this official website (and others) are exactly correct. I believe our phone system which is controlled by an outside vendor, uses their own Time Sync setup.

Going with the above info, I assumed that our servers were incorrect. I looked on the net to find a way to verify that the time was indeed off. I found two that provided the query information I needed:

1. http://social.technet.microsoft.com/Forums/en-US/winservergen/thread/96278628-03a1-4b3d-90d9-2208a65a1210/

2. http://robsilver.org/ad/demystifying-time-in-a-forest/

When running the following command on the Windows 2008 PDC/FSMO, I got this:


C:\Windows\system32>w32tm /stripchart /computer:pool.ntp.org /samples:5 /dataonly
Tracking pool.ntp.org [149.20.54.20:123].
Collecting 5 samples.
The current time is 5/3/2011 10:06:32 AM.
10:06:32, +222.7781307s
10:06:34, +222.7767302s
10:06:36, +222.7734748s
10:06:38, +222.7734918s
10:06:40, +222.7728472s

But our phone and the official US Time Zone website state the time is actually 10:11:xx?

So it seems that both are stating the correct information, however which site/system is correct? How can the official us time website be 5 minutes ahead of our time query on the server?

Our two DC's are both Win 2008 and using Hyper-V on top of windows. Their Time Sync feature in Integrated Services is disabled.

Thanks!