That completely ignores the fact that ancient communities used the lunar calendar with periodic corrections every few years. 360 is equal to 12 lunar months, to

That completely ignores the fact that ancient communities used the lunar calendar with periodic corrections every few years. 360 is equal to 12 lunar months, to the precision required of the ancients who practiced the insertion of entire leap months to compensate for drift (because the phase of the moon served as a more reliable clock than anything else that was available).