The Jewel of Annual Astrology is an encyclopaedic treatise on Tājika or Sanskritized Perso-Arabic astrology, dealing particularly with the casting and interpretation of anniversary horoscopes. Authored in 1649 CE by Balabhadra Daivajña, court astrologer to Shāh Shujāʿ – governor of Bengal and second son of the Mughal emperor Shāh Jahān – it casts light on the historical development of the Tājika school by extensive quotations from earlier works spanning five centuries. With this first-ever scholarly edition and translation of a Tājika text, Martin Gansten makes a significant...