According to Vedic astrology, if Jupiter is placed with Rahu or Ketu in a horoscope or has a mutual aspect relationship in a horoscope, then Guru Chandal Yoga is formed. Through this Yoga, Rahu and Ketu may cause damage to the general as well as specific significances of Jupiter in your horoscope. Guru is the name given to Jupiter in Vedic astrology, whereas Rahu and Ketu have been considered as Chandal (a very evil person) here. Hence a combination of Jupiter with Rahu or Ketu either by means of placement or by means of aspect is said to form Guru Chandal Yog in the horoscope.
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