From the poles, you can see only half of the stars that are visible from Earth, but none of the stars ever set. As the Earth rotates, the objects in the sky don t change at the south pole. But, we do see objects move counterclockwise around the horizon. Although you can t tell what time of day it is by looking at the angle of the sun, you can observe the sun in a different position. Just as you re accustomed to light coming into your house a certain way in the morning and a different way in the evening, the same is true here.
Some windows get sunlight in the morning, and some in the afternoon.
Back home, it s easy to have an internal sundial. You can tell approximately what time it is by looking at shadows. Longer shadows are good clues that it s early morning or late evening, and shorter shadows are a good indication that it is midday. The same is true at the south pole.