Onam

Onam (IPA: [oːɳɐm]) is an annual harvest and cultural festival related to Hinduism that is celebrated mostly by the people of Kerala. A major annual event for Keralites, it is the official festival of the state and includes a spectrum of cultural events.

Onam commemorates Vamana (the fifth avatar of Hindu deity Vishnu) and the generous but egotistical daitya king Mahabali. According to the Hindu legends, after Indra (the king of the devas) is defeated by Mahabali (the king of the asuras), the devas ultimately seek refuge in Vishnu, who agrees to restore Indra to power. To do so, Vishnu incarnates as a dwarf priest called Vamana. The king Mahabali (himself a devotee of Vishnu) conducts ritual prayers, one of which is attended by Vamana, who requests only three feet (steps) of land to build a fire-altar. Mahabali agrees, despite being told about Vamana's divine nature by the sage Shukra. Vamana grows in size, and in three strides, encompasses all of the universe and beyond. The three worlds are restored to Indra, and Mahabali and the asuras are banished to the netherworld (Patala). However, witnessing Mahabali's love for his subjects, Vamana grants the king's sole wish to visit his kingdom once every year. This homecoming of Mahabali is celebrated as Onam in Kerala every year.

The date of Onam celebration is based on the Panchangam, and falls on the 22nd nakshatra Thiruvonam in the month Chingam of Malayalam calendar, which in Gregorian calendar falls between August–September.