Xenta controllers are 1 hour ahead of PC time.
All controllers and PC are in the same timezone and have the same daylight offset time.
Windows XP Service Pack 1 and 2
Windows daylight times are incorrect for the current dates.
The PC time is in normal time not Daylight time even though the update daylight saving automatically is selected.
Install windows update KB955839. This updates the daylight dates in windows.
Click here to download this update