The Sun is not always directly above the Earth. The Sun appears to move across the sky due to the Earth's rotation on its axis. During the day, the Sun rises in the east, reaches its highest point (the zenith) around midday, and sets in the west. This apparent motion of the Sun is a result of the Earth's rotation from west to east.
Therefore, the direction of the Sun changes throughout the day. In the morning, it is generally in the eastern part of the sky, and in the afternoon, it moves toward the west. However, it's important to note that the Sun's exact position in the sky depends on factors such as the observer's geographic location and the time of year, which can cause variations in the Sun's path across the sky.
The Sun's position in relation to the Earth also changes over longer periods due to the tilt of the Earth's axis and its orbit around the Sun. This gives rise to the changing seasons as the Sun's angle of incidence on different parts of the Earth's surface varies throughout the year.