...meaning that you cannot use the limiting approach since \(t(du+dv)->\infty . 0\) This underscores a serious weakness in your proof. Now, before you rush to try fixing it, let me point out that your second claim is falsified by experiment: the atomic clocks making up the UTC, though separated by different distances and though moving at different (and variable speeds, so you cannot claim that they are at rest wrt each other or that they have ever been at rest wrt each other because there is no such frame where they are at rest wrt each other) are in synch in the ECI frame. You will need to reflect on this fact. ...because you have a lot of errors and holes in your explanation. Over these 80 posts, I have shown you several of the. Please don't attack me, I am not attacking you, I am simply pointing out the errors in your claims and proofs.