If you are at all honest with yourself and serious about discerning truth from fiction:
1. Find out for yourself what the definition of a cubit is.
2. Ask yourself how accurately a cubit is defined, i.e., +/- 5% or what ever.
3. Contemplate for a few minutes the number of significant digits in the author's claim, "365.2422".
Ask yourself, is this author an honest person?
Just goes to show you how uninformed the Egyptians were, they didn't even know about the precession of the equinoxes!
--Boot Hill