Hindu devotees gather by the river Brahmaputra and offer prayers during Chhath Puja festival in Guwahati. A Hindu devotee offers prayers at the river Brahmaputra during Chhath Puja festival in Guwahati. A Hindu devotee offers prayers at the river Brahmaputra during Chhath Puja festival in Guwahati. northeastern Assam state. Hindu devotees gather by the river Brahmaputra and offer prayers during Chhath Puja festival in Guwahati. A Hindu devotee moves toward the river Brahmaputra in a prostrate manner during Chhath festival. Hindu devotees perform rituals during Chhath festival performed to thank the Sun god for sustaining life on earth. A Hindu woman prays to the sun god as she stands in knee deep waters during Chhath festival. A Hindu woman puts vermilion powder on the forehead of another during Chhath festival performed to thank the Sun god. Hindu devotees perform rituals at sunset on the Ranbir canal during Chhath Puja festival in Jammu. India. A Nepalese woman offers prayers to the setting sun on the bank of Bagmati River during the Chhath Puja festival in Kathmandu