Definition of Ayanamsa

The difference between the Rasi Charts of Indian System comprising of Nakshatras (starts with Ashwini Star) and the Western System based on Seasonal set up is noted as Ayanamsa.

          The Astrological System adopted by Indians is called the " Nirayana (or) Sidereal " System, While Western Astro-analysis is called " Sayana (or) Tropical " system.

Sayana means inclusive of Ayanamsa while Nirayana means exclusive of Ayanamsa.

The date of Coincidence of the Tropical & Sidereal Zodiacs was found to be 285 A.D on 22-March at 21H:27M(IST) as Zero Ayanamsa by Great Astro-Mathematician Lahiri.[According to Calender Reforms Committee].

Various Scholars have different opinions on Ayanamsa Date:

1. Cheiro  -  388 B.C
2. D. Davidson  -  317 B.C
3. G Massay  -  255 B.C
4. Therens  -  125 B.C
5. P Covneez  -  0
6. Cyril Fagan  -  221 A.D
7. Lahiri  -  285 A.D
8. Krishna Murthy  -  297 A.D
9. P.S Ray  -  319 A.D
10. B.V Raman  -  397 A.D
11. Sepharial  -  498 A.D
12. Madhura Krishna Murthy Sastry  -  411 A.D
13. Swamy Kannu Pillai  -  532 A.D

Degrees in Sayana system - Ayanamsa = Degrees in Nirayana system. This formula is useful to calculate the sphutas of Graha, Bhava and Lagnas.

    Today Ayanamsa [Chitrapaksha/ Lahiri] = 24˚:3': 48" {24-Oct-2014}