(30) And in periods of seven days the moon undergoes its changes. In the first week she becomes half moon; in the second, full moon; and in the third, in her wane, again half moon; and in the fourth she disappears. Further, as Seleucus the mathematician lays down, she has seven phases. First, from being invisible she becomes crescent-shaped, then half moon, then gibbous and full; and in her wane again gibbous, and in like manner half moon and crescent-shaped.

(104) Morning and Evening are and reach only up from the Earth to the Moon, and take their Original from the Light of the Sun, and this makes Evening and Morning, as also the outward Day, and the outward dark Night, as every one knows.

(4) The reappearance of the moon, and the creation of the month

(4) So long as the sun rises in the south and sets in the north, twice as long does it rise in the west and set in the east; and so long does he follow the sovereign supremacy of the Âdityas.