Hi PD, It is entirely irrelevant whether the Earth rotates or not, or revolves or not (except as discussed in my exchange with Martin S). The subject is satellite periods as predicted in the GS – geostatic – system. That means the Earth does not move. ‘Does not move’ includes ‘does not rotate’ and ‘does not revolve’. No Robert, you are confused. The subject was, at my instigation so I know, the orderly progression of satellite orbits in a heliocentric system vs the chaotic progression in the geocentric system. This is deja-vu all over again. The chaos comes not from the GS system, but the incorrect periods and misunderstanding of the GS system. Now it is true that I had only two geocentric points to plot on my graph and that a curve cannot be defined with just two points. But since there was no reference I could find describing the geocentric position How about 3 lines above? “the GS – geostatic – system. That means the Earth does not move. ‘Does not move’ includes ‘does not rotate’ and ‘does not revolve’.” and you declined my request for data/formula(e), it was the best I could do. The GS period is the period measured by a fixed observatory on the fixed earth - the transit time from one zenith to the next. EG, the GS period for one of the earth’s satellites, the Sun, is 24 hours, since that is what is observed. Now, what are the observed periods for the artificial satellites?? So pervasive is the HC brainwashing that we can’t even conceive of a static earth – exactly what we directly observe! How subtle is the demon – we don’ t even believe our eyes… That the Earth does not move as you claim or that the Earth does move as most others claim, is, as I pointed out (see above) irrelevant. The calculation will return the same numbers regardless. Are the GS and HC lunar periods the same? Are the geo-stat periods the same? Aristotle, anyone? Acceptance of contradictions is irrational; discourse is meaningless. Christian realism has no common ground with agnosticism or nihilism. New homework. Research the meaning of geostatic – geocentrism in the strict sense…. again. The probability of an event is generally represented as a real number between 0 and 1, inclusive. (Omission now included and underlined) Isn't this amending the reference so as to support your contention? (I'm assuming you corrected this "omission" yourself? I would find the coincidence of someone else having so fortuitously done so, quite remarkable). Here’s one of the links with ‘inclusive’ included: http://newton.engj.ulst.ac.uk/crt/rely/rely.pdf <http://newton.engj.ulst.ac.uk/crt/rely/rely.pdf> ,P.2, Definition 1.2. Only the underlining was added, as stated RB