There might be a few situations where you need more flexibility than what the clock UI can provide. In that case, you will need some help from the command line and registry.
To manually synchronize the clock with a time server using the command line :
net time \\<ntp_server> /set /yes
NOTE : Replace <ntp_server> with the server IP or FQDN.
Example :
net time \\time.chu.nrc.ca /set /yes
To change the time server list/source :
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ W32Time \ Parameters
NOTE : Edit <peerlist>, using space between the server IP or FQDN. Make sure to append “,0x1” at the end of any FQDN record.
To set the pooling interval :
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ W32Time \ TimeProviders \ NtpClient \ SpecialPollInterval
NOTE : Edit <period>, value should be set in seconds.