The author now describes how to calculate Amsa Ayurdaya. This is to be taken as final when lagna is stronger than the Sun and the Moon, Count the number of constellations from Asvini that have elapsed with reference to the position of a planet in the chart. Dividing this by three, take the remalnder and multiply it by four. Add the number of padas covered by the planet in the constellation. This gives the number of navamsas from the beginning of Mesha. This is the number of years contributed by that planet in the Amsa Ayurdaya method. From the quarter (pada) in which the planet is, calculate the months and days by the rule of three. The years, months and days contributed by the two luminaries, five planets, and lagna have to be added.