Surya Siddhanta
ग्रहोदयप्राणहता खखाष्टैकोद्धृता गतिः। चक्रासवो लब्धयुता स्वाहोरात्रासवः स्मृताः॥
Multiply the diurnal motion (in minutes) of a planet by the number of Práṇas which the sign, in which the planet is, takes in its rising (at a given place;) divide the product by 1800′ (the number of minutes which each sign of the ecliptic contains in itself,) add the quotient, in Práṇas, to the number of the Práṇas contained in a (sidereal) day; the sum will be the number of Práṇas contained in the day and night of that planet (at the given place).
english translation
grahodayaprANahatA khakhASTaikoddhRtA gatiH। cakrAsavo labdhayutA svAhorAtrAsavaH smRtAH॥
hk transliteration by Sanscript