Surya Siddhanta
समालिप्तौ भवेताम् तौ ग्रहौ भगणसम्स्थितौ। विवरम् तद्वद् उद्धृत्य दिनादिफलम् इष्यते॥
Thus the two planets, situated in the zodiac, are made to be of equal longitude, to minutes. Divide in like manner the distance in longitude, and a quotient is obtained which is the time, in days, etc.
english translation
samAliptau bhavetAm tau grahau bhagaNasamsthitau। vivaram tadvad uddhRtya dinAdiphalam iSyate॥
hk transliteration by Sanscript