Determination of the date of the First Point of Aries held fixed using a combined method of Astronomy and Astrology

In the pre-era of Global Navigation Satellite System (GNSS), Astronomy was only technique available for determination position or Azimuth. Still, to understand space-based technique, a good knowledge is necessary; concept Celestial Sphere, Coordinates Bodies, and various categories Time. The celestial coordinate systems are based on fixed point in space, Vernal Equinox First Point Aries(γ). This not static has backward movement about 50 arc seconds per year. Eastern system Astrology, this held fixed, but date it uncertain. article describes method determine by using Astronomical Astrological calculations. According computations Julian days longitude Sun, found that Aries around 420 AD.