Turn key on, clock should be on, locate the 'small' H and M buttons on the radio face, use the tip of a ballpoint pen, toothpick or the like to push buttions as desired for the correct time. In this case you probably just want to change the H (hour) so push that 'small' button with a small tool or pen tip. Just keep playing around with it, you will get the hang of it. LOOK into getting an owners manual,, got to have that, BUNCH of must know info. in it!!! Read it, you will be the first to do so, nobody does! However you will also learn a lot of important stuff about your vehicle that can save you not only money, but 'lives' as well~! It is a SUV and will react differently than a car while driving and a sudden change of direction is desperately needed!