The system time on our workstations are off by a few minutes compared to the time showing at time.gov.
They are in sync with our domain controllers which are off of real world time by the same amount, so this issue is not causing any problems locally.
I ran a w32tm query command on a domain controller (Hyper-V VM) and it says it's syncing with source IP 86.77.84.80.
I looked up the IP in a web search and found some very old posts (like this one from 2009http://arstechnica.com/civis/viewtopic.php?t=86542), so I wonder if that IP is still a valid IP to sync to today.
How can we get our domain controller time source more accurate with live atomic clocks so that our domain clients will sync accurate time?