148 A rule for finding the true daily motion (called jivabhukti) of the planets : TRUB LONGITUDE OF A PLANET 58-63. Multiply the (planet's) own (mean) daily motion by the current Rsine-difference relating to the mandocca (i.e., the current Rsine-difference corresponding to the mandakendra of the planet) and again by the (planet's) own (corrected manda) epicycle; then divide (the product) by the number of minutes in a sign as multiplied by 10 (i.e., by 18000¹). Add half of that to or subtract that from the (planet's) mean daily motion according to (the law of addition and subtraction in) the (four) quadrants. (Thus is obtained. the once-corrected daily motion). Subtract that from the daily motion of the sighrocca. Multiply whatever is obtained (i.e., sighrakendrajyagatiphala) by proceeding with the remainder in accordance with the rule "kendrāntyajiva etc." (stated in the previous stanza)³ by the radius and divide by the sighrakarna (of the planet); (and reduce the resulting Rsine to the corresponding arc). Add half of that (arc) to or subtract that from (the once-corrected daily motion) in accordance with the law (of addition and subtraction) for the correction due to sighrocca. (Thus is obtained the twice-corrected daily motion). Then add the entire of the mandakendrajyagatiphala (derived from the current Rsine-difference corresponding to the ¹ This number is the product of 225 and 80. 2 See supra stanza 5. 3 That is to say, multiply the remainder by the current Rsine-diffe- rence corresponding to the sighrakendra of the once-corrected planet and also by the planet's corrected sighra epicycle and divide the product by 18000: the result is the sighrakendrajyagatiphala.
- Multiply the twice-corrected daily motion by the current Rsine-
difference corresponding to the mandakendra of the twice-corrected planet and also by the planet's corrected manda epicycle and divide the product by 18000: the result is the mandakendrajyagatiphala.
