Chapter Three

PAULIŚA-SIDDHĀNTA — PLANTERY COMPUTATIONS ETC. ३. तृतीयोऽध्यायः पौलिशसिद्धान्तः — ग्रहादिगणितम् Introductory This chapter is a compendium of the part of the Pauliśa Siddhānta dealing with the Sun, Moon and Rāhu. It has already been mentioned that the original Pauliśa is now lost, perhaps for ever. This and the Saura are the only Siddhāntas dealt with by the author in full, the others being scrappy. For some reason not known to us, at present the Pauliśa is mixed up with the Vāsiṣṭha, for, the mean Moon, together with its peculiar technical terms pada, gati and ghana are used here, without mentioning how they are got. The formula for the Moon’s daily true motion, which patently belongs to Vāsiṣṭha has strayed into this chapter, another evidence of their being mixed up. In this chapter the Sun, the Moon and Rāhu, the methods of computing the daily nakṣatra, tithi and karaṇa, the two yogas vyatīpāta and vaidhṛti, the day-light in any given place in India, and certain holy days necessary for religious observations are dealt with. [स्फुटरविः] ‘खार्क’घ्नेऽ ‘ग्निहुताशन’मपास्य ‘रूपाग्निवसुहुताशकृतैः’ | हृत्वा क्रमाद् दिनेशो मध्यः केन्द्रं सविंशांशम् ॥ १ ॥ ‘एकादशा’ ‘ऽष्टषट्कं’ ‘रूपोना सप्ततिः’ ‘ख’युक्ता च | ‘नवषट्क’’मु(त्कृ)ति’श्च क्षयः कलाः केन्द्रराशिसमाः ॥ २ ॥ ‘दश’ ‘षट्काष्टक’ ‘सप्तति’ ‘सप्ततिरेकाधिका’ च ‘नवषट्कम्’ | ‘पञ्चकृति’श्चोपचयो मध्यमसूर्यः स्फुटो भवति ॥ ३ ॥ True Sun

1. Multiply the days from Epoch by 120, deduct 33 and divide by 43,831. The mean Sun in revolutions, rāśis etc. is obtained. Add 20° to this mean Sun. What is called kendram is got. 2-3. For the first six rāśis of kendra there are the following six quantities: 11, 48, 69, 70, 54 and 26, all deductive and in minutes. For the next six rāśis are the following: 10, 48, 70, 71, 54 and 25, all additive and in minutes. (If these are taken one after another according to rāśis of the kendra gone and) applied to the mean Sun, it becomes true Sun.