Book of Enoch (1 Enoch) 74:14
For the moon alone the days amount in 3 years to 1,062 days, and in 5 years she falls 50 days behind: [i.e. to the sum (of 1,770) there is to be added (1,000 and) 62 days.]
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.