This post has been edited. The original version has been archived at https://archive.ph/oMPzu.
The issue I - alongside others - had found was that TempleOS did not display the correct time/date on the background wallpaper. The wallpaper is, for the uninitiated, the large deep-blue backdrop of the display.
The error is begun by a value set in the user's HomeLocalize.HC.Z file; local_time_offset. It is used by the system to offset the time by the end user's timezone.
In the function WallPaper (C:/Adam/WallPaper.HC.Z), the function Now; - which returns the current time in a struct, subtracted by the local_time_offset is called - but also with the addition of local_time_offset. This results in WallPaper not displaying the time correctly.
The solution is extremely simple. Delete the addition of +local_time_offset from the call of Date2Struct in WallPaper.