Peruvanam Pooram is one of the most popular temple festivals of the South Indian state of Kerala. It is held at Peruvanam Temple in Cherpu, Thrissur District. Lord Shiva is the presiding deity of this temple. The deity of the Peruvanam Mahadeva Temple does not participate in the pooram, and is a silent spectator to the proceedings. The participation is limited to temples with Devi and Sastha as the primary deities. It is said that the festival used to witness participation from 108 temples. Presently, the festivities consist of processions (called "Ezhunnallippu") from about 23 temples. As per records at the Peruvanam Mahadeva Temple (Granthavali), the year 2023 witnessed the 1441th edition of the pooram, in its present form. The pooram occupies an important place in the cultural fabric and history of the state of Kerala. One of the important attractions of Peruvanam Pooram takes place within the temple of Irattayappan at midnight. This is relatively an unnoticed event of the night. Eleven deities who do not have their own elaborate Poorams on the night would have arrived on single elephants while the other Poorams were in progress. They all come to the temple, pay homage to the deity of Irattayappan by going around inside the temple yard and then alight from the elephant. The Kolam would then be led to the Mandapam of Irattayappan where each has specific spot to rest. At midnight they all mount their own elephants and form an array outside the western entrance to Irattayappan. The respective oil lamps which lead the deities from their temples to Peruvanam also form an array in front of the elephants. The drummers (Maarars) and other supporting percussionists from the respective temples then start an elaborate Panchari Melam. At midnight with no artificial light to spoil the show this event called a ‘Vilakku’ has a mesmerizing effect.