Western astrology always deals with the position of the planets and its effect on the life of the human beings. The Western astrology was developed 2000-3000 years ago by the Greeks and they believe that Sun, which is the center of the solar system, shares the deepest bond with planet Earth. This specific ball of fire influences Earth’s Tropic of Cancer and Capricorn, which in turn, influences the all the living beings surviving on the planet. This is the reason why Western astrology is also known as Tropical astrology. This branch of astrology believes a new year begins on or around March 22nd and that day marks the onset of spring and also the Vernal Equinox, the day in which, day and night last for the same duration. During the rule of the Romans, January 1st was declared the beginning of the New Year. However, this particular rule does not have any significance in the field of astrology. It is also being said that Aries, that is being regarded as the first sign of the zodiac, is placed during the time of Vernal Equinox, followed by the other zodiac signs.
Vedic Astrology always deals with the stars and it is very old and different from the Western astrology. It is 5000 years old science that does not mark any sign as the first sign or talk about how to begin or end counting the twelve zodiacs. Rather as an alternative, the science of Vedic astrology is based more on the sidereal zodiac that is the fixed stars or constellations that ultimately help in the calculation of all the planetary movements. They do not study the Earth’s relationship with the Sun but they say of leading them to erroneousness due to the dynamic equinoxes. Vedic astrology always talks about ‘Ayanamsha’– Earth’s rotation on its axis over the years. Each and every year, the equinoxes move ahead by almost a minute due to the continuous trembling of all the planets. Thus, every 72 years, an entire day is lost in Earth’s revolution. In Vedic astrology, there is the provision and as a result, all the twelve zodiac signs have to adjust to this and step back by a day to help predictions make more sense.