Chhath Puja 2026 runs November 13-16: Nahay Khay, Kharna, Sandhya Arghya (evening offering to the setting sun), and Usha Arghya (morning offering to the rising sun). For Bihari and Purvanchali families in the US, the dates match India’s, but the arghya times are tied to your own local sunrise and sunset.
Why this is entirely about your local sun times
Arghya is offered at the moment of sunset (Sandhya Arghya, November 15) and sunrise (Usha Arghya, November 16). These are, by definition, local astronomical events, an India-published clock time for Patna or Delhi has no direct bearing on when the sun sets or rises in your US city.
The 36-hour fast in between
Vratins observe a roughly 36-hour nirjala fast from Kharna’s evening through Usha Arghya the next morning, so knowing your local sunset on the 15th and sunrise on the 16th in advance helps plan the fast’s timing precisely.
Getting your city’s exact times
Use the panchang page with your US city selected to see the exact sunset for November 15 and sunrise for November 16.
This information is descriptive.