Hayanaratna · by Balabhadra
Chapter 7 · Finding the Dashas
दशानयनाधिकाराध्यायः
एवं सौरसावनार्थमनुपातः । यदि माससौरदिनै ३०र्माससौरसावनदिना ३०। २६। १०। ३७। १० नि लभ्यंते तदा तत्तद्भावसौरदिवसैः कानीति ॥ एवं माससौरसावनदिनानि ॥ भावसौराहैर्गुण्यानि त्रिंशता भाज्यानि लब्धादशायास्सौरसावनाहास्स्युरिति ॥
So, a rule of three for solar-civil days. Suppose 30 solar days of a month give 30;26;10;37;10 solar-civil days. Then how many do the solar days of each house give? So multiply the month's solar-civil days by the house's solar days. Divide by thirty. The result is the period's solar-civil days.
Simple meaning: Solar to solar-civil days: house days times 30;26;10;37;10, divided by 30.
अथ भावतासीरदशायाम्प्रकारान्तरेणैव विशेषस्तत्रैवोक्तः ॥
House periods by junctions: the lagna less the 12th junction is degrees run; the lagna junction less the lagna is degrees to run.
लग्नसंधिविहीनार्थसंध्यंशास्तेर्थभावजाः ॥
House periods by junctions: each junction less the one before gives that house's degrees.
सौरसावनतो वैषां विधायोक्तविधानतः ॥
House order: make the periods solar-civil. This is called the house order.