Some people compare Astrologers to Nostradamus but both are entirely different. Astrologers definitely need to have some intuitive power but their calculations are based on planetary motion, but Nostradamus predicted events in coded language without considering Graha chaal.
Prophecies of Nostradamus are decrypted when certain events happen but he never held any Graha responsible for certain event. Astrologers base predictions on planetary motion - if their calculations lack its explanation, it isn't astrology. Please don't mix the two.