Relativity of Simultaneity

 Relativity of Simultaneity depends on the observers. The concept is that two events that are distant from each other happen at the exact same time. There is no guarantee that they happened at the same time according to the concept of Relativity of Simultaneity. Relativity of Simultaneity is not when lighting strikes and the sound of the thunder comes after, that is referred to as appearance simultaneity. If you are right under the lightning strike you will hear the thunder at the same time you see the lighting but if you are far from the lightning you will see the lightning then hear the thunder after. Time is unreal in Special Relativity. Time is subjective and not the same everywhere. Since Special Relativity shows that time will change due to relative motion like the clock in motion ticking slower than a clock that is stationary this means that time is subjective to everyone.