Vedic astrology holds its roots to the ancient times, more precisely supported by the Vedas, the ancient spiritual texts of the Hindu religion and probably the oldest texts of the world as written about 5000 to 8000 years ago, which mentions about it. Western astrology is said to be developed at around 2000 to 3000 years ago by the Greeks and Babylonians.
Western Astrology is based on the relationship shared between the Sun and the Earth. This approach is based on the belief that since Sun is the centre of the Solar System, therefore Sun is more important to Earth than any other mystical body. Western astrology makes astrological predictions on the basis of the relationship as measured between the Sun and the tropics of the Earth, which are Tropic of Cancer and Tropic of Capricorn. March 22 is said to be the date on which day and night are of astrology equal durations. This date also marks the beginning of the spring. Western astrology credits this date as the beginning of the year, unlike January 01 which has been the Roman date of the beginning of the year. Being considered as the first date of the beginning of the year, Western astrology states Aries to be the sign starting from this time of the year, with other signs following it.
Vedic astrology or Indian astrology is completely different from Western astrology. Vedic astrology does not have any standard to be put into use for depicting starting and end of a year. Vedic astrology is based on the positioning of stars and planets, as well as the interrelations shared by them. It does not solely rely on the relationship in between the Sun and the Earth on its reason that Earth is rotating as well as revolving, which results in a change of its equinoxes (the time of equality between day and night) by around 50 seconds in a year, which makes it to an impact of a shift of a day in every 72 years. In that case, this relationship gets naturally affected. The signs are required to be shifted one day back in order to sustain the logic of astrology. This aspect makes Vedic astrology much more accurate and precise than Western astrology.