Chhath Puja 2026 is celebrated from November 13 to November 16. Follow these essential dos and donts for rituals, cleanliness, fasting, and prasad. Chhath Puja is one of the most significant Hindu festivals dedicated to Lord Surya, the Sun God, and Chhathi Maiya. Observed with prayers and fasting, the festival reflects devotion, discipline, cleanliness and gratitude towards nature.