Book of Enoch (1 Enoch) 72:8
When the sun rises in the heaven, he comes forth through that fourth portal thirty mornings in succession, and sets accurately in the fourth portal in the west of the heaven.
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.