Watches on the Moon

"Pardon me, sir, but do you have the time?"The patient calls back, "One moment!" and throws himself upon the ground, pulling out a short stick as he does. He pushes the stick into the ground, and, pulling out a carpenter's level, assures himself that the stick is vertical.With a compass, the patient locates north and with a steel ruler, measures the precise length of the shadow cast by the stick.Withdrawing a slide rule from his pocket, the patient calculates rapidly, then swiftly packs up all his tools and turns back to the pedestrian, saying, "It is now precisely 3:29 pm, provided today is August 16th, which I believe it is."The man can't help but be impressed by this demonstration, and sets his watch accordingly.Before he leaves, he says to the patient, "That was really quite remarkable, but tell me, what do you do on a cloudy day, or at night, when the stick casts no shadow?" "What Time?A man had been driving all night and by morning was still far from his destination. He decided to stop at the next city he came to and park somewhere quiet so he could get an hour or two of sleep.As luck would have it, the quiet street he chose happened to be one of the city's most popular jogging routes. No sooner had he settled back to snooze when there came a knocking on his window. He looked out and saw a jogger running in place."Yes?""Excuse me, sir," the jogger said, "do you have the time?" The man looked at the car clock and answered, "7:15."The jogger said thanks and left. The man settled back again, and was just dozing off when there was another knock on the window and another jogger.