Okay so I like many others arrived to find my hilton alarm clock was 12 hours off. Annoyed at the prospects of having to call maintainence I went to work on figuring out how to change the time on the clocks myself. After reading the posts in this message thread and doing a little tinkering myself I finally figured out how to set the time on these darn clocks. In order to change the time you will need to remove the top cover of the alarm clock. This is the cover where the 5 preset radio station buttons are. In order to do this you will need to remove the phillips head screw located just below the top cover in the back of the clock (center top). I used a key on my key chain and it came out pretty easily. From there just pry off the top with your hands from the back, the front has two little clips that snap in and hold it on. Once you have this top off you will see some hidden buttons along the back edge of the clock. The left most button is labeled time. Just press this button and the clock time will begin flashing. Use the alarm clock time buttons to set the time. Note the PM light located at the top left of the display should be lit if you are setting the clock to a PM hour. Just press the enter button (button 3) when done or touch nothing for about 5 seconds. You will hear a beep and the clock time is now set. That's it. Stupid design....

Note: There are two other hidden buttons under this cover but I haven't had time yet to figure out what they do.