Clive S Carver said: > In other words what I am trying to find out is whether solar noon would be at > the same instant at say, 50.0N 3.0W and 55.0N 3.0W? Yes. Here is another way to think about it. Stand on the Earth's north pole and face the sun. Local solar noon is the Meridian facing the sun. The angle with the orbital plane doesn't have anything to do with it. -- These are my opinions. I hate spam.