To fix the possible time of happening of an event in the life of an individual is a difficult matter. Vimshottari dasa is a commonly used tool to do it. Parashar has given several dasas but he has himself expressed his view that of all dasas Vimshottari is the most suited one for our times. It is a very commonly used dasa among astrologers today. It is essential to be clear about the principles involved and about the practice of those principles. These principles are universally applicable. The dasa gives astoundingly correct results when applied strictly according to these principles. The author has stated the principles very clearly. The reader will realize the ease with which this dasa can successfully be used when it is applied according to the principles stated in this book. A very large number of real life charts have been analysed in the book to clarify the few principles that are involved.