Book of Enoch (1 Enoch) 72:27
And the sun has (therewith) traversed the divisions of his orbit and turns again on those divisions of his orbit, and enters that portal thirty mornings and sets also in the west opposite to it.
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.