For before the heavens came into being, there were no days or nights, no months or years. But now, at the same time as [the Demiurge] framed the heavens, he devised their coming into being. . . . Time, then, came into being together with the universe so that just as they were begotten together, they might also be undone together, should there ever be an undoing of them. . . . He brought into being the Sun, the Moon, and five other stars, in order to create time. These are called 'wanderers' [planetoi], and they came into being to set limts to and stand guard over the counting of time. When the god had finished making a body for each of them, he placed them into [seven] orbits. He set the Moon in the first circle, around the earth, and the Sun in the second, above it...