Why is Day 2 of Chhath Puja  — the sacred Kharna fast — considered the heart of devotion? Discover the Vedic rituals, sunset timings, and the Sanatangyan wisdom behind this powerful day of purity and surrender in 2025. Chhath Puja is one of the oldest and most spiritually important Hindu festivals. It celebrates the worship of Surya Dev,  the Sun God , and Chhathi Maiya . The second day of the festival, called Kharna, is very special. On this day, devotees observe a strict ni