Navgrah Hawan is a ritual that includes the worshipping of all nine planets. According to Hindu Astrology, these planets have a significant influence on a person's life. The nine planets are Surya, Chandra, Mangal, Budh, Guru, Shukra, Shani, Rahu, and Ketu. In this Hawan Pujari ji chants mantras to pacify the planetary gods.