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's Sandhya Arghya will be observed on Sunday, November 15, as devotees worship the setting Sun. The evening ritual involves offering water and prayers to Surya Dev and Chhathi Maiya.