Local clock inaccuracy is so miniscule as to not merit mention with respect to NTP. (around three orders of magnitude difference). Click to expand... For bare metal, yes. For virtual, no. Fire up ntpd ...
As I mentioned in my Solve an obscure Back to my Mac issue blog entry, it’s possible to configure OS X’s time servers to be a bit more robust than just relying on one time server—if that server goes ...
Run NET TIME /SETSNTP:uk.pool.ntp.org on your DC. As long as thw windows time service is running on your domain members the rest is done automatically.