OK, it's pretty easy to go beyond my pay grade!! So, for my guess: Let's remember that humans on Earth are going in an orbit at about 1,000 mph. So, I would guess that would have to be taken into account in calculating the expected difference when comparing an Earth clock to a satellite clock as the speed difference between Earth and those satellites would not be the same.
I am not educated enough to do the math I just like to be able to visualize a lot of the physical properties of the universe.
Amen. Getting a practical idea is great. The problem is that our daily lives give us a ton of experience with Newtonian physics (which is essentially a special case where nobody goes light speed and we're all stuck to Earth's surface). We get little experience with general relativity. So, the fact that our universe matches relativity, is just outside of our every way of thinking. Besides, the math is serious. We talk about E=MC^2. But, that is almost a sidelight to the real deal of relativity: (from Wiki, and note that it is written in a way that hides the calculus) Let's face it. This kind of math is NOT how we have learned to view things here on Earth, even though it is consistent with tests of the real universe. Who knows what a "stress energy tensor" is?
