  The GRB 991216 and its relevant data acquired from the BATSE experiment and
RXTE and Chandra satellites are used as a prototypical case to test the theory
linking the origin of gamma ray bursts (GRBs) to the process of vacuum
polarization occurring during the formation phase of a black hole endowed with
electromagnetic structure (EMBH). The relative space-time transformation
paradigm (RSTT paradigm) is presented. It relates the observed signals of GRBs
to their past light cones, defining the events on the worldline of the source
essential for the interpretation of the data. Since GRBs present regimes with
unprecedently large Lorentz $\gamma$ factor, also sharply varying with time,
particular attention is given to the constitutive equations relating the four
time variables: the comoving time, the laboratory time, the arrival time at the
detector, duly corrected by the cosmological effects. This paradigm is at the
very foundation of any possible interpretation of the data of GRBs.
