There's a whole section of the Book of Enoch that feels totally different from the angels and giants. It's about the sky — and honestly, it reads like the world's oldest astronomy class.
The angel Uriel takes Enoch and shows him how the sun, the moon, and the stars actually move. The gates the sun rises and sets through. How the days get longer and shorter through the year. How the moon changes shape on a schedule. It's the universe explained as a giant, precise clock.
Enoch even comes back with a calendar — a year of 364 days, built to keep every festival and season landing on the right day. To the people who treasured this book, getting the calendar exactly right wasn't boring. It was sacred. It meant living in step with heaven instead of drifting out of sync.