In this book, a volley of major ancient texts like, Paraasara Samhita, Sarvaartha Chintamani, Phaladeepika and the Tamil Classic Jataka Alankaaram have been mainly depended upon to enunciate the results. Introducing the basic concepts of the Dasa system as existing in different texts, the reader is taken to a deep discussion of the Udu dasa system, which is the present prevalent system on which the dasa prediction is based and is in practice. Replete with tables on different systems nad how they are arrived at, the introduction deals with an overview of the different dasa systems in Indian astrology as culled out from different classic astrology texts. The introductory chapters are illustrated with tables for dasa periods and how to calculate the periods of different dasa for each planet. The second section goes into general dasa prediction for each planet and its possitoning in each rasi and then delves with direct prediction for sub periods and antardashas of each planet. The predictions are so arranged that the book can be used as a ready reference to arrive at the results for each planets and its sub periods. The book is intended to be a ready reckoner, to the students and practitioners alike and this book can help them to assort, assimilate and arrange the dasa results for any particular horoscope they are examining in an assidious way.