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Hayanaratna · by Balabhadra
Chapter 8 · Month Chart and Monthly Results
मासप्रवेशादिविचाराध्यायः
अथ त्रैक्यानयनम्॥द्विघ्नसायनमध्यार्कदोर्ज्याषड्भैर्विभाजिता ॥कालाद्यं स्वमृणम्सूर्य्ये समौजपदगे क्रियात् ॥त्रित्रिभिर्भैःपदं चोजसमं स्यादुदयान्तरे ॥
Now, finding the traikya (the sum of three corrections). Take the sayana (tropical) mean Sun, doubled. Take the sine of its arc. Divided by shadbha (a fixed divisor), it gives a result in minutes and so on. It is made plus and minus for the Sun in an even and an odd quadrant in that order. In the udayantara (rising-time correction), each quadrant is three signs, taken as odd and even in turn.
Simple meaning: 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.
१ | २ | ३ | ४ | ५ | ६ | ७ | ८ | ९ | १० | ११ | १२ | १३ | १४ | १५ | १६ | १७ | १८ | १९ | २० | २१ | २२ | २३ | २४ | २५ | २६ | २७ | २८ | २९ | ३०
Table of the mean Sun's motion for 1 to 30 days, in signs, degrees, minutes and seconds.