Relativity of Simultaneity Analyzed and Put to Direct Testing

The relativity of simultaneity and synchronization is considered as an underlying concept of the current framework of special relativity. However, it is deduced most often from the famous train embankment thought experiment, despite the fact the setups can be developed to test the simultaneity both directly and indirectly. Relativity of simultaneity is analyzed here as a concept separate from time dilation because the latter is reproduced by the new formulation of relativity without any need for synchronization term. It is shown that non-simultaneity is a result of assuming the existence of photons at overlapped positions in the two frames, which is supported by neither Lorentz nor new transforms. Experimental setups are proposed to directly detect the two blasts at their very locations.