For those that still wondering about sync time in client with AD DC :

To update, use the command below (2008 and 2012 server compatible)

w32tm /config /manualpeerlist:"ntp_server" /syncfromflags:manual /reliable:yes /update        

change the ntp_server with your source

Restart the time service

net stop w32time
net start w32time        

• Resync the time

w32tm /resync        

Verify your sync status

w32tm /query /status        

Commands above should be fine if your sources are working correctly and/or your connection is OK (firewall or Microsoft Forefront can be an issue also). The commands below can help with troubleshooting

To list out peers

w32tm /query /peers        

To list out NTP Sources:

w32tm /query /source        

For troubleshooting, it's often useful to test the connection to a specific server:?w32tm /monitor /computers:time.windows.com