Hayanaratna · by Balabhadra
Chapter 1 · Planets, Signs, Year Entry
ग्रहराशिस्वरूपवर्षप्रवेशाद्यानयनाधिकारः
अथ वर्षप्रवेशसमये स्वस्वाधीतसिद्धांतकरणादिरीत्या साधितोर्कौ जन्मकालीनार्केणावश्यं समो भवति ॥ इदमेव वर्षप्रवेशसमये प्रमाणम् ॥
Now, at the year's entry, work out the Sun by the siddhanta (planet-maths text), karana (short handbook for planet maths) and the rest one has studied. That Sun is surely equal to the Sun at birth. This alone is the proof of the year's entry time.
Simple meaning: Test of the year entry: the Sun found by one's own method must equal the birth Sun.
उक्तंच समरसिंहेन ॥
Samarasimha: the true Sun at the year entry stands where it stood at birth.
श्रीमन्नीलकंठज्योतिर्विंद्भिरप्युक्तम् ॥
Nilakantha: at the year entry the Sun equals the birth Sun.
एवं निष्पन्नस्याब्दप्रवेशकालस्य स्पष्टीकरणमुक्तं हरिभट्टेन ताजिकसारे ॥
Correcting the entry time (Haribhatta): if the Suns differ, turn the gap into time by the Sun's speed, and take it off or add it.