Hayanaratna · by Balabhadra
Chapter 7 · Finding the Dashas
दशानयनाधिकाराध्यायः
वारप्रवृत्तेर्गतनाडिकास्तु द्विघ्नाशरा५ प्तागतकालहोरा ॥दिनेश्वरात्षष्ठकषष्ठकानुक्रमेण यः स्यादथ वर्तमानः ॥२॥
Take the ghatikas (24-minute units) passed since the weekday began. Double them and divide by five. This gives the kalahoras (planets ruling the hour) passed. Count from the day's lord, each time to the sixth. The one you reach is the current one.
Simple meaning: Kalahora at the year start: ghatikas since the weekday began, doubled and divided by five, give the hours passed.
आद्या दशा तस्य परा परेषान्तत्षष्ठषष्ठक्रमतोखिलानाम् ॥
Kalahora order: the current hour lord first, then every sixth planet. The remainder gives the parts passed and to come.
उभे तु वर्षाद्रि ७ बलेन निघ्ने शरोकृतेस्तंगतगम्यमाने ॥
Kalahora periods: the first lord's period is split into a part to come, at the start, and a part passed.
परा परेषान्तु यथास्थितास्स्युर्गतोन्मिता चेति दशा हि तस्य ॥
Kalahora periods: the others keep their full share; the first lord comes back at the end. Month and day use their own spans.