Sharad Purnima is a harvest festival celebrated on the full moon day of the Hindu lunar month of Ashvin, marking the end of the monsoon season. The Kojagari Purnima concerns the observance of the Kojagara Vrata.
Kojagiri Purnima/Sharad Purnima/Ashwin Purnima, will fall on the full moon night. Kojagiri Purnima Puja is celebrated in whole of India with different names. In bengal it is celebrated as Sharad Purnima Lakshmi Puja, Orissa it is known as Kumar Purnima and celebrated as Gajlakshmi Puja and in Mithilanchal as Kojagari lakshmi Puja.