https://www.workingdays.in/public_holiday-pratihar-sashthi-surya-sashthi-chhat-puja
Pratihar Sashthi/Surya Sashthi (Chhat Puja)
Chhat Puja, an observance devoted to the Sun. The custom calendar selects the day named in the central restricted-holiday list; regional calendars may include...
chhat pujapratiharsurya