Chhat, also known as Chhath Puja, is an ancient Hindu festival primarily celebrated in northern and eastern India, as well as certain regions of Nepal. It holds immense cultural and religious significance and is dedicated to the worship of the sun god, Surya. Chhat is most prominently celebrated in Indian states like Bihar, Uttar Pradesh, Jharkhand, and West Bengal, and is also observed in parts of Nepal, especially in the Madhesh and Lumbini regions. The central aspect of Chhat Puja involves the veneration of the sun god, Surya, with devotees expressing their gratitude for Surya's role in sustaining life on Earth and providing light, warmth, and energy.