If memory serves, we had another person with a similar issue here not long ago.
As I recall, the problem was caused by the fact that the user did not have the "Time Zone" properly configured to their geographical location.
Click on the clock in your system tray and then, at the bottom, select "Change date and time settings..."
The window should open to the "Date and Time" tab - but if for some reason it doesn't, then select that tab.
In the lower portion of that window you will see an option in a gray bar to "Change Time zone"
Select that and another small window will pop up which will display the current time-zone setting,
Make sure that the setting specifically matches the zone in which you live. If it doesn't, then use the pull-down menu on that bar to select your exact time zone.
Click okay until all the windows have closed -- then try re-setting your clock.
Hope this helps - and please let us know how you make out.