[grip_daddy]

Let me set an arbitrary experiment to explain my question:

Take two persons A and B, and an observer C. Observer C is first of all blind folded and put inside a special sound proof parachute. He is then fitted with special sound detectors in his ears that would regulate sound received to erase distant perception i.e. all recieved signals arrive as if they came from a single spot. Then the environment is set such that the only sound that reaches an observer C is that made by either person A or B or both.

Persons A and B are given special guns to produce sound detectable by observer C. Now to start off, person A is stationed at a distance that would enable C detect sound A (sound from person A) one second after the sound was made. Person B on the other is stationed such that sound B reaches C after 30 seconds.

Now, when A fires his gun, one second later C gets the signal. If A and B fired the gun simultaneously, then according to C, B fired the gun 30 seconds later.

Let us imagine that B fires first then 10 seconds later, A fires. Now C will recieve B at 30 seconds but he will receive from A at 30 minus 10 plus 1 i.e. at 21 seconds. According to C therefore, A fired first then B fired 9 seconds later.

This can happen the other way round if C was moving away from A towards B, making all events from B happen first according to C. Since there is no way you can convince C that in REALITY, events of B (past events) happened after events of A (future events), it seems to me therefore that maybe there is an observer somehow who perceives events of 2020 before those of today.

What if you are an observer moving from planet A, where you witnessed an occurrence of events in 2000, to a planet where the events that happened in 1900 reaches you? Do you conclude that 1900 occurred first?

Is it possible somehow, in absolute observation, to be at a point of seeing all universe events happen simultaneously?