Ok, for example...
* Clocks should be synchronized at 0, not at 11:55
A quick perusal of postings well above will show the synchronization would have to have been performed much earlier, at some time well before Marty's 11:55 departure
* Each clock/observer should be identified by some simple notation like C1, not Isaac or Fred or Martha
My apologies. But who is Fred
* The starting point for each clock/observer should be defined, C1 on Mars, C2 on Earth, etc
My apologies again though I'm not quite sure what you mean by "starting point" as you've already defined these abbreviations as applying to an event, not to a locality
* Then each event should be identified one at a time: C1 moves from Mars to Earth. Stop. C1 = 0, C2 = 5 minutes.
As judged by Al I presume C1 is Marty's takeoff (11:55) but not sure what's meant by C2 since "5 minutes" is a duration, not an event. But then what became of C0
Aha! Now I'm perhaps beginning to understand where your confusion arises. By
3. Two clocks (one on Earth and the other on Mars) switch position at approximately the speed of light.
, according to your posting #……..442, which had left me somewhat in the dark, you're under the mistaken impression that Isaac and Marty take off at the same Newtonian instant; whereas if you'll review my earlier postings you'll see Marty takes off 5 minutes earlier, arriving at Earth the moment Isaac fires his rockets, that is noon Al's time. Hence "3 clocks" and the ref to taad as noon plus 5 minutes
But please forgive the pun
* After you've elucidated all of that, then state your question related to the conditions you have described.
I'm somewhat hesitant to attempt such unless I can be assured that my assumption in the foregoing para is accurate. But regarding Newton,
……..so was he just saying that if it's noon in Paris that it's also noon in Rome
I suppose some confusion could come from one's definition of "noon;" but assuming Al's and Romeo's clocks (and perhaps Marty's and Martha's) had much earlier been synchronized, then yes Romeo's also reads 12:00 (and Marty's too)