Hindu devotees offer prayer to the sun during the Chhath festival at the banks of the Ganges river in Kolkata, India, Nov. 3, 2019. The Chhath festival, also known as Surya Pooja (worship of the sun), is observed in various parts of India, as devotees offer water and milk to the Sun God at dawn and dusk. (Xinhua/Tumpa Mondal)