He then accounts for the precession of the equinoxes.
The stones are perfect constructed for predicting and sighting a wide variety of astronomical alignments including the precession of the equinoxes.
the precession of the equinoxes
The equatorial bulge, the rotation axis' angle of inclination to the ecliptic plane, the gravitational tidal forces of the Sun, Moon and planets, have an affect on the Earths' orbit that produces the famous precession of the equinoxes.
Another characteristic of sun-earth system is the gradual precession of the equinoxes and solstices along the orbit.
precession of the equinoxes
It is due to a phenomenon called the precession of the equinoxes.
