Flexi Says: The Moon appears to move from east to west across the sky each day or night, just like the Sun and the stars. This apparent motion is due to Earth's rotation. However, the Moon also rises and sets at a different time each day throughout a lunar cycle. This change is due to the Moon's orbit around Earth. The new moon always rises at sunrise and sets at sunset, because at that time of the lunar cycle the Moon is in the same direction as the Sun when viewed from Earth. The full moon rises at sunset and sets at sunrise, because at that time of the lunar cycle, the Moon is opposite the Sun on the other side of Earth. As the Moon changes position in its orbit, it also appears to change position against the constellations. The Moon appears to move through the constellations of the zodiac each month.