Well, I think you've got it, thinker.
Actually, it is too complicated and convoluted. I think that is why since the mid 1980's, a creative day is merely explained as being several thousands years in length. Much simpler...of course, there was no formal explanation of why 7,000 years was dropped. The 7,000 years was strongly tied to the end of 6,000 years in 1975.