With the help of Sanku and other instruments first observe the Shadow at the time of birth. Determine the nadis and vinadis that have elapsed from sunrise to the moment of birth. Then note the duration of the day and of the night op the day of birth. Take the position of the Sun in the tropical Zodiac (Sayana) on the day of birth. From this position calculate the position upto the nadis and Vinadis that elapsed at the time of birth. Next ascertain the exact positions of the various planets on the basis of drigganita and place them in the various signs. Then calculate the bhavas (houses, not signs) and their junction points. All this can be obtained by the kindness and blessings of the teacher. The intelligent one has to determine all these with a delightful and clear mind.