If you using your Artica server as NTP Server, use the PowerShell to force you Windows 2016 server to be synchronized with your Artica server
as 192.168.1.171 is our Artica server
w32tm /registernet start w32timew32tm /config /manualpeerlist:192.168.1.171 /syncfromflags:manual /reliable:yes /updatenet stop w32timenet start w32timew32tm /resync
The command
w32tm /query /peers
Will report the Time servers used by the client.
An other way is to use use the tool provided by https://www.timesynctool.com/