How do we change the clock??

Today Harley is upset because Robert and Kelly were originally supposed to come back last night. Since they didn’t, we called my ex-husband and he said they would be home by 6pm on Sunday (today). After many tears and screams of ‘pain’ he accepted it and finally went to bed at 1:00 am. When he got up at 6am today he was so excited! It’s 6 o’clock!!? No, sorry son – it’s 6 o’clock at night they are coming back. . . after dinner! So needless to say I have only 8 ½ more hours of him asking every five minutes – when will 6 o’clock be here? At least I can give him a straight answer on this one – counting down the hours! I’m gonna go crazy if he doesn’t stop asking every five minutes. At least it gives him practice telling time. . . every time he asks me when will 6:00 be here, I ask him “well what time is it now?”. He’s determined that if he can just reach the wall clock and change the dial 6:00 will get here faster! And as I was typing this, he did just that!! GRRRRHHH! He proudly announced to me that it's 6:00, let's go! Hey, it's a good sign he knows how to tell time, he actually set the clock correctly!!