Balasubramanian Narayanaswamy, writing under the pen name yenbeeyes, is a traditional astrologer and author with over five decades of study and practice. Born in 1949, he began learning astrology at age 21 under the guidance of his maternal grandfather and continued his formal training for nearly 12 years. He later studied advanced predictive astrology under Sri Nakkirar Natarajan. He was subsequently introduced to Nadi Astrology by his present guru, Sri P. V. R. Rayudu, who guided him extensively in using Nadi amsas.
The author has also assisted in compiling and editing the book Nadi Astrology and Prediction Techniques. He has written several works based on classical astrology, including Matching of Charts (Parts 1 & 2), Importance of Lagna, Chandra Kavyam, Jyotish Research Articles – Volume 1, and Timing of Marriage.
Under the Eswara Nadi series, 27 volumes have already been published—12 on Surya Khandam, 12 on Chandra Khandam, and 3 on Kuja Khandam. The present book is the 28th volume in an ongoing project to systematically present Eswara Nadi across the seven classical planets.