What to do if clock is inaccurate on the Mesa 3 Windows or Mesa 2
1 Sep 2020
System time may become inaccurate. To correct, connect to the Internet (or a network with time server) then tap on Start > Settings > Time & Language > Date & time > Sync now. If the clock quickly goes out of sync again, fully Shut Down the tablet; press and hold the hardware Power button for at least 20 seconds (battery disconnect function); and power on the tablet by connecting external power.
If needed, further ideas are provided at the following web page.
If you are a developer wanting an even more accurate clock on the rugged handheld computer, see this web page.