You should have found that the Sun takes a different time to rotate on its axis at different latitudes! That should be surprising. The Earth rotates...

You should have found that the Sun takes a different time to rotate on its axis at different latitudes! That should be surprising. The Earth rotates as a solid body... no matter where you are on the Earth, you rotate around in 24 hours. Imagine what would happen if, for example, Mexico rotated once every 23 hours, the United States took 24 hours, and Canada 25. Explain how it is possible for the Sun to have different rotation rates for different latitudes.