Solar equinox is what I would like to call it is a moment in time when the sun crosses the Earth's equator, which is to say appears directly above the equator. So I guess you got your answer and well, Western astrology mostly is based upon the later position of celestial bodies such as the sun, moon, plant, planets in the solar system. And the predictions are made on the basis of that in the Hindu culture. In our culture, astronomy is the Vedanga geotish