The earth is traversed by magnetic currents that follow the approximate direction of the meridians. Meteorological and astrological influences influence the speed of these currents, which differ in all points on the earth's surface. There is still a magnetic meridian, where the speed reaches its maximum value. This current moves from West to East, having weekly, monthly, annual, quadrennial, sixteen-year, quinquasecular fluctuations, etc.
These currents have a very strong influence on animal, vegetable and intellectual life. History proves that where the magnetic current passes with its maximum speed, civilization and the peoples whose soil activates it also reach the highest level of development.
Therefore, a nation going through the full cycle of its destinies needs five hundred and twenty years to reach its highest evolutionary period and another five hundred and twenty years to gradually decay.
This period of five hundred and twenty years is divided into 32 periods, in turn the 32 periods are divided into 16 years each. At the beginning and at the end of the period of 520 years we have a period of 4 years each.