Although Windows generally has up-to date time, it sometimes can happen that the time is a bit wrong.
With the following commands you can set a new NTP server and sync with it for the first time (forced)
C:\>w32tm /config /manualpeerlist:nl.pool.ntp.org,0×8, /syncfromflags:manual /update
If you want some information about repsonces from the NTP server you can use the following command.
C:\>w32tm /stripchart /computer:nl.pool.ntp.org /samples:5 /dataonly
For setting the time, make sure that you use an elevated command prompt window.