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Hayanaratna · by Balabhadra
Chapter 8 · Month Chart and Monthly Results
मासप्रवेशादिविचाराध्यायः
स्वर्णं कर्कमृगे केन्द्रे मध्यभुक्तौ स्फुटा गतिः ॥स्यादब्दपालकालीनः स्पष्टार्को गतिसंयुतः॥
For the motion, the result is added when the anomaly is in the half beginning with Cancer. It is subtracted when in the half beginning with Capricorn. This gives the true motion. The true Sun at the year lord's time then stands joined with its motion.
Simple meaning: True daily motion: add the cell result in the Cancer half, take it away in the Capricorn half. Then the true Sun at the year lord's time has its motion.
अथ त्रैक्यानयनम्॥
Finding the traikya: double the tropical mean Sun, take the sine of its arc and divide by shadbha. Add or subtract by the quadrant.
यद्वा ज्यां विनैवोदयान्तरानयनम् ॥
Rising-time correction without the sine: take the degrees gone or to come in the quadrant. Take away twice their fifth part; the rest is the…
अर्कमंदफलं खेन्दु १० गुणं स्याद्विकलात्मकम् ॥
Sun's time correction: the manda result times 10, read in seconds. It is plus or minus like the manda result.