1 Enoch

And after this law I saw another law dealing with the smaller luminary, which is named the Moon.

And her circumference is like the circumference of the heaven , and her chariot in which she rides is driven by the wind, and light is given to her in (definite) measure.

And her rising and setting change every month: and her days are like the days of the sun, and when her light is uniform (i.e. full) it amounts to the seventh part of the light of the sun.