Ganga Aarti is a pleasant ritual of worshipping the Ganga. The Ganga Aarti in Rishikesh takes place every evening after sunset. The ceremony commences with the singing of Bhajans, prayers, and a purifying and sacred ritual that takes place around a fire, for more info : http://raftingcampingrishikesh.com/sightseeing-in-rishikesh.html