If the minutes are correct and only the hour is bad, that’s probably the issue you’re dealing with.
To fix your time zone in Windows 10, right-click the system clock in your Taskbar and select Adjust date/time.
*** This might be due to the " Close Client During Game" option in the client.
This option makes the client close out when you enter a game, which means after the game it has to completely reboot to start.
If you want to go further and change the time server, scroll further down in the above window and click Additional date, time, & region settings.
At present, this will take you to the old Control Panel.
This is an easily fixed cause for when your computer clock loses time.
If the computer clock loses time although you keep adjusting it, there may be a serious reason.To fix it, you need to gather a few malware removal tools.First, make sure your anti-virus program is up to date with the latest virus definitions.Under the Time Zone header, check whether the information is correct.If not, select the correct time zone from the drop-down menu.