Relative day and night lengths listed in the Book of Enoch might have changed due to 'precession' and latitudinal changes caused by precession. It is Equinox for the Middle East latitude on March 20th in 2018 but not for all other latitudes apparently. Also the day and night lengths of a year for Enoch would have been different in different parts of the world. But not only that, it all changes gradually over time. The axis of the Earth gradually moves. They call it precession. We might be able to see where and when the Book of Enoch was written by the list given of day and night lengths and how they change through the year.
