Onam is a Hindu festival celebrated in Kerala, India. It is also the state festival of Kerala with State holidays on 4 days starting from Onam Eve (Uthradom) to the 3rd Onam Day. The festival falls during the Malayalam month of Chingam (Aug - Sep) and marks the commemoration of Vamana avatara of Vishnu and the subsequent homecoming of the mythical King Mahabali. In Kerala, it is the festival celebrated with most number of cultural elements such as Vallam Kali, Pulikali, Pookkalam, Onathappan, Thumbi Thullal, Onavillu, Kazhchakkula, Onapottan, Atthachamayam etc. Onam is reminiscent of Kerala's agrarian past, as it is considered to be a harvest festival. The official date is set by the Indian National Calendar.