(e.g. of Aquarius) Time taken for the Vernal Point to move backwards through one sidereal constellation - approx 2,150 years. It is probable that midway between the Equinoctial points are the Earth's Nodes, where the plane of its orbit intersects that of the Sun, at an inclination of approx. 50 degrees; but since the Equinoctial Point is now considered as a fixed point and the motion takes place only within its frame of reference, it appears that a study of the circle which the celestial pole describes around the pole of the Ecliptic will be required in order to determine when it passes an East point, to mark the time of beginning of the first of twelve astrological ages of 2150 years each, into which the precessional cycle is subdivided. On this manner of reckoning the Earth might now be in the Capricorn Age, as well as any other. At least there is no justification for us to consider mankind as now in the Aquarian age, even though a recent astronomical treatise speaks of the Signs of the Zodiac as "now precessed some 25?° west of the constellations of the same name." Historical records show the Equinox as having once began in Taurus, at which time Taurus was considered to be the first Sign of the Zodiac. v. Precession.