The article presents physical and theoretical generalizations of the space-time metrics, based on invariant coordinate time transformations over the intervals of the observed periodic emission of pulsars. Synchronization of spatial reference systems by the observed passage of the wave front of the coherent radiation of a pulsar corresponds to the axiomatic matching of coordinate time scales defined by the observed rotation parameters of the pulsar with the initial coordinates of spatial reference frames within the homogeneous Galileo space of the Galaxy. As a result, all physical processes in such coordinates systems, including the observed coherent radiation of a pulsar, are indistinguishable from each of them. The estimated span of minimum recognizable on the pulsar time scale is 10−12–10−14 s in the extent from several years to several decades and then gradually decreases, reaching limit values of the order of 10−16–10−17 s in the extent compared to the lifetime of a pulsar. The relative size of the resolved interval is within approximately 10−19–10−29.