So what do the causeway angles mark? As the below diagram shows, which I screen captured from a free pdf file downloaded from http://www.solomonseries.com/ , the Great Pyramid's side angles are such that no shadow would be cast at noon when the sun is at 8 degrees, which occurs 1 month before the spring equinox and 1 month after the fall equinox. That is exactly when the sun rose at 14 degrees from due East. The slope angle of the 2nd pyramid is virtually the same as the Great Pyramid's and would have done the same thing 1 month after the fall equinox as the Great Pyramid did 1 month before the spring equinox, cast no shadow at noon. The lack of shadows marks 3 Egyptian weeks of 10 days each before the spring equinox and after the fall equinox. The Great Pyramid causeway marks the same time period before the fall equinox and the 2nd pyramid marks it after the spring equinox. So the causeways and the shadows work together to mark 30 days each side of both equinoxes.
In the first image "GP" means geographic position, not Great Pyramid. This pdf was discussing the fact that the pyramids were not meant to be equinox markers. The author failed to take into account that they may actually have marked the point at 1 month before and after the equinoxes. The causeways confirm this hypothesis quite clearly.
Edited by GS1, 02 October 2012 - 12:04 AM.