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Vedic Astrology or Jyotish uses the Sidereal Zodiac, which is using the fixed constellation of stars called Aries, Taurus, Gemini, etc., as a backdrop to calculate the positions and movements of the planets. This is also what astronomers use in their calculations.
Western Astrology uses the Tropical zodiac, which is based on the premise that the Sun will be at zero degrees Aries annually on the 21st March. The Tropical system was created (based on the equinox), about 1900 years ago, when the Sun was actually at zero degrees Aries. The assumption was made that the Sun would return to this position every year on the spring equinox. |
