To find out where your machine/server is sourcing its time from, use one or more of the following commands.
Open up the cmd prompt as Admin
w32tm /query /configuration
This command will give you the current time configuration you have set up on the network/for the machine
w32tm /query /status
This will give you information such as stratum, leap indicator, precision, last sync, NTP server, poll interval.
Time /T
This will simply output the current system time.