1 After this, I observed another law related to the smaller light, the Moon.⁠a 2 Her circumference matches that of the heavens, and her chariot, driven by the wind, receives light in a defined measure. 3 Her rise and set change each month, and her days mirror those of the sun. When fully illuminated, her light reaches one-seventh⁠b the brightness of the sun. 4 She rises this way, first appearing in the east on the thirtieth morning, becoming visible alongside the sun at the portal where the sun rises, marking the first phase of the moon on the thirtieth day. 5 Half of her surface shines by one-seventh, while the rest of her remains dark, except for one-seventh of her light, which makes up one-fourteenth of her total brightness. 6 When she receives one-seventh of the half of her light, her overall brightness equates to one-seventh plus half of that seventh. 7 She sets with the sun, and when the sun rises, the moon also rises, gaining half a part of light. At the beginning of her day, she sets with the sun and remains unseen that night, missing fourteen parts and half of one part. 8 She rises on that day with exactly one-seventh of her full brightness, pulling back from the sun’s rise, and over the remaining days, she brightens across the remaining thirteen parts.