Reduction to Ecliptic in Indian thus / Heliocentric longitude corrected trignometrically / Vipata Anomaly computed / Sin h, Parinathi Jya = 1 – cos l sin Y cos Y / cos l ( Y = Vipata Anomaly . l = latitude ) / Added if in even quadrant / And minussed if opposite / Thus shall be obtained / Luna’s ecliptic true longitude ! / Vikshepa vritteeya gatho vipatha / Thasmannayel jyam parinatyabhi khyam / Yugmaupada swarnam idam vidheyam / Syath krantivritteya ihaisha Chandra ! Meshadi Rinam = minus the sine value, Thuladi Dhanam – +, if value >180. Oja Padam Rinam = minus if in odd quadrant. yugma padam dhanam = plus in even quadrant.