Nadi Astrology narrates the past, present and the future of individual. Nadi astrology is an ancient method of astrology in India that does not predict but state the facts. Long ago, great saints and sages in India because of their spiritual intellect had recorded life of each and every individual who had lived, was living and were to live not only in India but across the world. But records for only those people who are destined to know about them were written by the sages. The circumstances in their lives will drive them to the nadi astrology and they will reach their involuntarily. Only the expert nadi astrologer can read these records that are written on the palm leaves. The facts are written in a poetic Tamil on palm leaves. Each leaf contains the description of one's life, facts and destiny.
To reach at your leaf, the thumb impression of your hand is taken. For male thumb impression of right hand is taken and for female it is the left hand whose thumb impression is taken. Then there are about 100 categories in which the thumb impression is categories. Each category has 5-6 bundle of leaves. In each bundle there are around 100 leaves.
From your thumb impression the category for you is recognized. Nadi astrologer then ask you many question like your name, your mother's name and so on. You can answer these questions either in yes or no. To get your leaf you must answer all the questions in yes. From your specific leaf everything related to your present life is then said. Even if you have some bad phases in life, pujas for the same are asked to perform to lessen the effect.
Nadi is a Tamil word that means in search of. The palm leaf inscriptions are dispersed across India but the standard ones are there in Tamil Nadu that are around 2000 years old and are there since the reign of the Cholas in Southern India. Nadi is written in Vatta Ezhuthu, a Tamil script. To write it sharp nail-like device was used that is called Ezhuthani. To preserve the palm leaves peacock oil is applied. Vaitheeswarankoil, near Chidambaram in Tamil Nadu is land of Nadi astrology origin and still the main center of Nadi astrology. The Saraswathi Mahal library of Tanjore(Thanjavur), Tamil Nadu still has these palm leaves.