There hereditary occupations consisted of bards, poets, missionaries, astrologists, genealogists, salesmen. They used their academia in their unsettled life travelling as scribes, genealogies, bards and astrologists. The Late Pandit Dheema Nand Bijalwan was one of most famous astrologists of Yammuna valley. Most modern astrologists no longer ascribe to this premise. He is also a self-avowed believer in the predictions of astrologists. At the time, astrologists had to rely on Ptolemy's tables for calculations.