Definitions derived from the constellations in the sun's orbit, the arc of the ecliptic, certain parts of the sun's orbit.

Twelve stages of the annual path followed by the sun that is named after zodiac signs. These stages/periods of time once coincided with their constellations they were named after. However, over time, precession has pushed the constellations and the signs named after them out of alignment.

Interesting facts: One complete cycle of the ecliptic takes 25,800 years.

Point zero of Aries (vernal/spring equinox) takes 2,150 years to move one sign (30 degrees) in the sky. These are the so-called astrological ages. The cosmic direction (the relative position of the sun within the belt of constellations) of this date once coincided with the starting point of the constellation Aries. Due to the procession, it moved seemingly backward through the constellation of Pisces. By now, the vernal equinox falls on the boundary of the constellations of Pisces and Aquarius. The past 2,000 years have been the Age of Pisces, and currently we are at the beginning of the Age of Aquarius.

Point zero of Aries, also known as the vernal equinox, is an important date and direction in the navigation of astronomy.

This is the point in the calendar year—defined in hours, minutes, and seconds—when the sun is passing right over the equator on Earth, and the imaginary line between the center of the Earth and the center of the sun intersect the equator.

In astronomy, it is the time of a vernal equinox on the Northern Hemisphere.

Actually, it has little to do with the Aries constellation. It should instead be interpreted in the context of the relation between the sun and the Earth. It indicates a certain level of illumination, irradiation, and energy quality. This is the time of Aries during the year.