News18. Chhath Puja 2026 Sandhya Arghya will be observed today, on November 15. Check city-wise sunset timings for Delhi, Patna, Mumbai and other cities, along with Usha Arghya timings. Chhath Puja 2026 is being celebrated today with massive devotion and enthusiasm across Bihar, Jharkhand, Uttar Pradesh and several other parts of India. The four-day festival, which began on.