Sharad Purnima (also known as Kumara Purnima, Kojagari Purnima, Navanna Purnima, Kojagrat Purnima or Kaumudi Purnima) is a religious festival celebrated on the full moon day of the Hindu lunar month of Ashvin (September to October), marking the end of the monsoon season. The full moon night is celebrated in different ways in various cultural regions across South Asia.