Book of Enoch (1 Enoch) 74:6
She goes forth for seven days, and turns about and returns again through the portal where the sun rises, and accomplishes all her light: and she recedes from the sun, and in eight days enters the sixth portal from which the sun goes forth.
Background and history of Book of Enoch (1 Enoch), and issues with this book.
R. H. Charles, The Book of Enoch (London: SPCK, 1917), public domain. The verse text is the English Wikisource transcription of that translation. Charles’s editorial signs are kept. He rearranges some verses in chapters 5, 39, 90, 91, and 106, so those chapters are not a straight 1, 2, 3 sequence.