Chaitra Poornima is the first Poornima of the Hindu lunar calendar and falls in the Hindu month of Chaitra, March – April according to Gregorian calendar. It is the Poornima (full moon) after the Ugadi festival. This year (2016) it is on 22nd April.
Hanuman Jayanti is celebrated on Chaitra Purnima day in North India.
On this day Lord Satyanarayana is worshiped. According to family traditions all the family members observe fast on Chaitra Poornima day.