Great Platonic Year
The time the Planetary Equinox regresses over a full 360º
There are 12 Zodiac Archetypes that are each of the 12 Astrological Ages. We are moving from the Age of Pisces to the Age of Aquarius. The Precession of the Equinoxes is caused by the differential between the gravitational forces of the Sun and Moon on the Earth. All of these cycles describe the Science of Ascension.