Hanuman is known to be the disciple of Lord Surya, from whom he learnt all the religious scriptures and developed a system of astrology of his own.
 
This system of astrology, known as ‘Hanuman Jyotish’, is used more like a ready-reckoner by the common man for queries from all the major areas of life. The system neither requires any knowledge of astrology nor the need to go to an astrologer.