The astronomical-calendrical tale of Enoch thus goes back into great antiquity

The Book of Enoch, an ancient composition known from two sets of versions, an Ethiopic one that scholars identify as "1 Enoch," and a Slavonic version  that is identified as "2 Enoch," and which is also known as The Book of the Secrets of Enouch. Both versions, of which copied manuscripts have been found mostly in Greek and Latin translations, are based on early sources that enlarged on the short biblical mention that Enouch, the seventh Patriarch after Adam, did not die because, at age 365, "he walked with God" ----taken heavenward to join the diety.  In the anthology Bible, Genesis chapter 5, explain in detail Enouch's two celestial journeys--the first to learn the heavenly secrets, return, and impart the knowledge to his sons; and the second to stay put in the heavenly abode. The various versions indicate wide astronomical knowledge concerning the motions of the Sun and the Moon, the solstices and the equinoxes, the reasons for the shortening and lengthening days, the structure of the calendar, the solar and lunar years,and the rule of thumb for intercalation.  In issence, the secrets that were imparted to Enouch  and by him to his sons to keep, were the knowledge of astronomy as it related to the calendar. The astronomical-calendrical tale of Enoch thus goes back into great antiquity--perhaps, as the Bible asserts, to pre-Diluvial times.    Why the Bible takes some facts of prehistory to morph with contrived stories, like the Eden garden and make a dichotomy, "a division or contrast between two things that are or are represented as being opposed or entirely different.  "When Time Began, by Zecharia Sitchin. pp 128