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Hayanaratna · by Balabhadra
Chapter 8 · Month Chart and Monthly Results
मासप्रवेशादिविचाराध्यायः
सायनस्फुटसूर्य्यस्य भुक्तांशास्स्वोदयैर्हताः ॥त्रिंशद्भक्ता रवेर्भुक्तम्मेषात्पृष्ठोदयैर्युतम् ॥ ७ ॥
Take the degrees gone of the true sayana (tropical) Sun. Multiply them by the rising time of its own sign. Divided by thirty, that is the Sun's gone part. Add to it the rising times of the signs behind it, from Aries.
Simple meaning: Easy traikya: the Sun's gone degrees times the rising time of its sign, divided by 30, plus the rising times of the signs from Aries before it.
षष्टिभक्तन्नाडिकादि अथ मध्यमभास्करः ॥
Easy traikya: divide by 60 for ghatikas. For the mean Sun, the sixth part of its tropical degrees gives ghatikas.
उभयोरन्तरन्त्रैक्यसंज्ञकं स्यात्कलादिकम् ॥
The gap between the two is the traikya. The sentence goes on in the next verse.
हीनस्त्रैक्यमृणं सूर्य्ये विज्ञेयं धनमन्यथा ॥
If the Sun's gone ghatikas are less, the traikya is taken away; otherwise it is added. The mean Sun is corrected by it.