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Reporting the time offset between a Windows PC and NTP server

Question

How closely synced is my Windows PC to an NTP server?

Answer

Windows w32tm has a utility called "stripchart" which can provide periodic (such as every two seconds by default)reports of the time offset between a Windows PC and an NTP server on the network. This can be the NTP server that it normally syncs with, or any other NTP server on the network.

Below is an example of Windows stripchart comparing a Windows PC to an NTP server (with an IP address of 10.2.100.19).

Windows time offset

In this example above, there is currently a 182.79 second time difference  (the "o"value") between this Windows PC and the selected NTP server.  The time difference reports continue to occur every two seconds.

To use stripchart, open a Windows Command Prompt window on the PC you wish to compare to an NTP server.  Type w32tm /stripchart /computer:xxx.xxx.xxx.xxx (where xxx.xxx.xxx.xxx is the IP address or hostname of the NTP server you wish to compare this PC against).  

Below are switches that can also be used in the stripchart command, as desired:

stripchart switches

to stop the stripchart reports, press  Ctrl+C  (or close the command prompt window).

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