Sages say that in the Pindayurdaya as well as in the Naisargikayurdaya the working process is as follows: The interval between a planet's actual position and its highest exaltation point, if less than 6 signs, should be subtracted from 12 signs. The result reduced to minutes must be multiplied by the number of years assigned to the planet and divided by 21,600, i.e., the number of minutes in the 12 signs of the zodiac. The years and months thus arrived at correspond to the Ayurdaya of the Sun and other planets obtained upon the application of Neechardha and similar proportionate reduction.