It moves the equinox point against the stars by about one degree every 72 years.
Because of it, the tropical zodiac's starting point drifts relative to the fixed stars, and the ayanamsa (the gap between the zodiacs) grows.
Jyotish courses teach it early: Paper I at Bharatiya Vidya Bhavan covers precession alongside the nirayana (sidereal) and sayana (tropical) zodiacs.
Lessons that use this term
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