God · Folk · East India · Bihar, Jharkhand, eastern Uttar Pradesh, Nepal
Pratyusha
In the explanation commonly given for the Chhath festival, the last ray of the evening sun, counted with Usha (the first ray of morning) as one of the two wives and powers of the Sun. The evening offering of Chhath is said to be hers.
Sources: Relevance of Surya Puja and Chhath Vrat, The Sentinel (Assam), 6 November 2021; Chhath (Wikipedia) · see Pratyusha's web