If you could mark the sun's position in the sky every day at the same time you'd notice that the sun's path makes a figure 8. This shape, often seen on globes, occurs because the earth's orbit is an ellipse (oval shape) and the earth is tilted 23.5 degrees. As the movie shows the path of the sun, notice the months in the counter near the bottom of the screen. As you would expect, the sun is highest in the sky in summer and lowest in winter.
