👉 Lunations, also known as the Moon phases or phases of the moon, are visual representations of the phases of the Moon. These phases are determined by the angle subtended at the Earth's surface by the Earth's orbit around the Sun. The lunar phase is determined by the angle between the line from the center of the Earth to the Moon and the line from the center of the Earth to the Sun. This angle, known as the declination, varies throughout a month due to the Moon