Hayanaratna · by Balabhadra
Chapter 7 · Finding the Dashas
दशानयनाधिकाराध्यायः
अत्र प्रकारन्तरं वर्षफलप्रदीपे ॥वर्षप्रवेशे दिनभे न नाडी निघ्ना दशाद्यस्य खषट् विभक्ता ॥फलं दिनाद्यं हि दशागतस्य तदूनिताद्यस्य दशा तदेष्या ॥
Here is another way, from the Varshaphalapradipa. At the year entry, take the ghatikas (24-minute units) gone of the day's nakshatra (star). Multiply them by the first planet's dasha (planet period). Divide by 60. The result, in days and parts, is the dasha gone. The first dasha less this is the part to come.
Simple meaning: Another way: at the year entry, the part of the day's star gone, times the first period, over 60, gives the period gone.
वर्षप्रवेशे प्रथमं दशा सा ततः क्रमेणैवमिहेतरेषाम् ॥
Order: the first lord's remaining part opens the year. The others follow. Its gone part closes the year.
वर्षप्रवेशे दिनभं च यत्स्यात्तस्याधिपस्याद्यदशा भवेत्सा ॥
Varshaphalapradipa: the first period belongs to the lord of the day's star at the year entry. The others follow in order.
अथ जन्मकालाभावे जन्मराशिवशाद्दशानयनमुक्तं तत्रैव ॥
Birth time not known: some count the year's periods from the birth sign. That way is given next.