"But noon by the clock is not always noon by the sun," replied Uncle
Robert.
"How can that be?" asked Donald.
"It is noon somewhere on the globe every minute of the twenty-four hours," said Uncle Robert. "The sun is always setting and always rising somewhere."
The children were puzzled.
"I don't see how that is," said Donald.
"Let us see if we can find out," said Uncle Robert. "Frank, you stand at the east end of the room, Donald at the west, and Susie in the middle. Now, we'll play that Frank is in New York, Susie here at home in Illinois, and Donald in Denver. I'll take the lamp and be the sun. You are shadow sticks, you know. Now watch the shadows, and see when they point directly north."
Uncle Robert took the lamp and walked slowly from the east side of the room.
"My shadow points north," said Frank as Uncle Robert passed him.
"Now mine does," said Susie.
"And mine last of all," said Donald.