Is there some significance to the 2,520 yrs? 7X360 yrs? Are those numbers from the KM? or from astronomy? or numerology or something like that?

@LindaT
Twelve (12) and Phi or 1.6180339 (etc) are probably the most important numbers in sacred geometry which is derived from Nature (& therefore also astronomy).
360 is a multiple of 12, and 2520 seems to be an important multiple of Phi, although this would strictly speaking be an inexact or irrational number.
I expect both entities are involved though.

Thx! My first thought was that it was related to sacred geometry, which I'm fascinated by. I have a couple of books & websites bookmarked, & I also created a piece of artwork using colored pencils (which I framed too) of the Flower of Life based on sacred geometry. Have actually done several...