Ayanamsa is the Sanskrit term. I have personally tried, traditional Lahari, Chitrap. Calculate ayanamsa - NC Lahiri ayanamsa, Raman ayanamsa, KP ayanamsa: KP Old and KP New, Krishnamurti ayanamsa, Khullar straight line ayanamsa etc. The Lahiri ayanamsa is based on the Chitra Paksha Ayanamsa. The Earth's wobble or the precession of the equinoxes cause the difference in the tropical and.