The global dynamic characteristics for Schwarzschild and Kerr solutions of Einstein's equations are obtained by using harmonic coordinates as an analogy of Lorentz's calibration in electromagnetic theory. For these asymptotically flat systems the Papapetrou's pseudotensor turns out to be singularly useful due to its bimetrical nature in the background of a flat space-time. The obtained results confirm the physical interpretation of these metrics. The method developed serves as an element for determining the physical nature of the sources generating these gravitational fields. It can also be applied, under certain conditions, for the determination of the global dynamic characteristics for some axial symmetrical insular stationary exact solutions of Einstein's equations.