Bill Hollon replies:
As Chris says, astronomical years change over the millennia, in spite of what was obviously believed by the author of The Book of Enoch, who wrote in its Chapter 74: "And the sun and the stars bring in all the years exactly, so that they do not advance or delay their position by a single day unto eternity; but complete the years with perfect justice in 364 days. In 3 years there are 1,092 days, and in 5 years 1,820 days, so that in 8 years there are 2,912 days." It seems clear that the person who wrote the above passage also believed that the 364 days was not just a 52-week calendar year, but was the actual length of a sidereal year.
See Dead Sea Scroll 4Q396(MMTc) "a calendar of 364 days," "A significant feature of the community was its calendar, which was based on a solar system of 364 days, unlike the common Jewish lunar calendar, which consisted of 354 days." There is a small possibility that this solar system of 364 days was earth's rotations against the stars in reverse orbits, perhaps at the time of writing. There must be 364 rotations a year in a reverse orbit.
The Egyptians had a Sothis cycle. This meant that at 2777 BC, they counted July 16 and the appearing of Sirius just before dawn as the beginning of the year and era. That is, they counted the year as 365 days from then on and did not factor in leap year. There were exactly 365.25 rotations a year according to Sirius. There are 365.2422 rotations a year according to the tropical year. This Sothis/Julian calendar falls back 1 day every 128 years with the tropical year. This meant that their 365 day year would back up to the appearing of Sirius on July 17 1320 BC 1457 years later. The appearing of Sirius July 16 was not affected by precession, first appearing July 16 every year from 4236 BC to 1320 BC. The precession of the equinoxes means stars move 1.4° clockwise every 100 years. Also, the Sothis calendar loses 1 day every 128 years; meaning the equinox in 2300 BC was April 11 and 1000 years later was April 3 Julian/Sothis. The Egyptian knowing the number of years would know the number of days from July 16 and vice versa. A long day or a short day would not affect the length of the year, it would just be a day. This period is called the Sothis cycle having to do with the appearing of Sirius. Presently we have 366 sidereal days a year in our counterclockwise orbit. If earth followed this orbit in reverse, rotations are against orbit and there must be 367 solar day years keeping our 366 sidereal days. We must have had 365 solar day years - explained by these 364 sidereal (complete rotations) day years. If earth slowed its rotation to 364 sidereal day years from 366 to keep the same number of solar days (365 nights/days) per year the ocean would drop 800 feet at the equator. More likely, earth sped up in the reverse orbit 48 hours a year maintaining the 365 days in a year with 364 sideral days (rotations). Herodotus wrote: "No reversal of sunrise and sunset takes place in a Sothis period." Obviously the sun continued to rise in the east and set in the west. He was suggesting all days must be normal days inorder for the 365 day Sothis calendar to back up to July 16 exactly. However, all that was needed was that the total days add up to what they should have been. The Chinese sexagesimal dates, days in cycles of 60, work to date the sun mircle in 2287 BC to January 31. According to legend a phoenix bird appeared at the end of the Sothis cycle. However, there were many other sun miracles up to the time of, and after, Herodotus. Papyrus Anastasi IV "The sun - it has come to pass it riseth not. The winter is come (instead of) as summer, the months are reversed, and the hours disordered." So the Egyptians knew their calendar was in trouble in a reverse orbit. Then for periods of, say, half an orbit or seven or nineteen years, in a reverse orbit, the Egyptians must have counted 365 days to the year without counting from the appearing of Sirius. When earth flowed into the current direction of orbit, counterclockwise, knowing the number of years had passed they could count back four years to a day from July 16 to check their 365 day calendar. Very likely God reset earth's orientation making the appearing of Sirius on July 16 again. That is, if the sun moved 180° before or after the equinoxes earth must immediately shift on its axis to keep in the same season. Then the sun must move back exactly half an orbit between 178 days and 187 days or 1 year to the day and earth shift back to the inclination to the sun it would have had on that date and flow out of the reverse orbit to continue as if nothing had happened. You will find many reverse orbits/zodiacs at Joshua's Long Day. This book of Enoch may depict a reverse orbit in the time of Enoch, perhaps from the day he was translated in year 365, possibly 365 years from the Sothis cycle from July 16 4236 BC. The 365 day Egyptian calendar had backed up a quarter of a year in year 365. The 365 year may point to the 365 day Sothis calendar in use at that time. Thus the 364 sideral day year during the reverse orbit. See Fantastic Creature in Ancient Biblical Legend.