Now it is thought that two suns are seen, if a cloud, raised higher than common and shining brightly from its nearness to the eternal fires,I.e. the sun. reflects a second brilliant orb, as if from a very clear mirror.

Let us now turn to the moon. Then only does she suffer a clear and evident eclipse, when, rounded out with her full light and opposite the sun, she is distant from its orb by 180 degrees (i.e. is in the seventh sign).Of the Zodiac. But although this happens at every full moon, yet there is not always an eclipse.

But since the moon is situated near the movement of the earth, and is the most remote from heaven of all that celestial beauty,I.e. is nearer the earth than the other heavenly bodies. she sometimes puts herself directly under the discThe sun. that strikes upon her, and is overshadowed and hidden for a time by the interposition of the goal of darkness ending in a narrow cone;I.e. the shadow cast by the earth; meta refers to the shape of the shadow; cf. Cic., ii. 6, 17, quando illa. . . incurrat in umbram terrae, quae est meta noctis; Nat. Deor. ii. 40, 103. and then she is wrapped in masses of darkness, when the sun, as if encompassed by the curve of the lower sphere, cannot light her with its rays, since the mass of the earth is between them; for that she has no light of her own has been assumed on various grounds.

And when under the same sign she meets the sun in a straight line, she is obscured (as was said) and her brightness is wholly dimmed; and this in Greek is called the moon’s σύνοδος.Conjunction; cf. Plut., 12, σύνοδος ἐκλειπτικὴ σελήνης πρὸς ἥλιον. That is, the time between two new moons; really, the last appearance of the waning moon, and the first of the actual new moon.

Now she is thought to be born,I.e. it is new moon. when she has the sun above her with a slight deviation from the plumbline, so to speak. But her rising, which is still very slender, first appears to mortals when she has left the sun and advanced to the second sign. Then having progressed farther and now having abundant light, she appears with horns and is called μηνοειδής.The crescent moon; μηνοειδής means in the form of a crescent; cf. Hdt. viii. 15. But when she begins to be separated from the sun by a long distance and has arrived at the fourth sign and the sun’s rays are turned towards her, she gains greater brilliance, and is called in the Greek tongue διχόμηνις,The half-moon; διχόμηνις means dividing the month cf. Lat. , to which some give that derivation, wrongly. a form which shows a half-circle