Chaithi Chhath is observed during Chaitra month just after Nav Varsh in Bihar, Jharkhand, and some other North Central regions of India. This festival is celebrated for 4 days similar to that of Chhath Puja in Kartik month.
Chaiti Chhath 2017 dates – March 31, April 1, April 2 and April 3.
The first day of Chaiti Chhath is Nahakha Chhath, the second day is Kharna Chhath, the third day is main Chaiti Chhath, and the concluding day is Paran Chhath Puja.
Nahakha date is March 31, Kharna is April 1, Chaiti Chhath is April 2, and Parna Chhath is April 3.