Sub Lunar Point
This graphic originally surfaced with the presentation of Golden Ratios, Golden Rectangles - once again, too good to not eventually front a topic. The point on Earth where the Moon passes over during its travel is called the "sub lunar point (SLP)". Since the Earth rotates as the Moon travels, the Moon does describe a full circle around the Earth in about a day. The Nautical Almanac describes the position on Earth with the daily pages, and adds v and d corrections since the Earth rotates appreciably on top of the overall orbital motion. When we tabulate the prediction for 1240 GMT, the SLP comes out to be far away from anything in the North Atlantic. If we adjust to go back to 0840 GMT (the actual Triton closest approach) we get an SLP that is callably "close" to Morocco. Since Roger is just poetically alluding to Morocco proximity, I THINK we can call this as predicted. So we are a little closer to ... having a clue. Lots of fun things on this map. Western Saha
