Here is the list of Festivals celebrated at Mangalagiri Temple. Brahmotsavam is the biggest festival celebrated at the temple.
Sri Panakala Lakshmi Narasimha Swamy Brahmothsavam is very important annual festival. It is believed that the celebration was inaugurated by Dharmaraja at the behest of Lord Krishna. Pradyumna, the son of Lord Krishna, reqested his father to celebrate his birthday annualy for a sapthaham (seven days) from Phalguna Suddha Sapthami. Lord Krishna entrusted this work to Dharmaraja, the eldest of the pandavas who has the successor to the throne at Hasthinapura.
At present the festival is celebrated for 11 days commencing from phalguna sudda shasti (february – march). One day before Phalguna Suddha Purnima i.e. on Chaturdasi, here the marriage of Santha Narasimha Swamy, and Sridevi and Bhoodevi will be celebrated. They follow Agama sastra in this celebrations. Before the marriage, Chenchus celebrate on the occassion of Narasimha swamy marrying their daughter Chenchu Lakshmi. On that day night, Swamy comes by Sesha Vahanam and participate in Eduru Kola. The next day after the marriage is Purnima, on which the Holi festival is celebrated by indians. The same day, here, people celebrate Tirunalla, and about 1,00,000 people, local and from distant places congregate. On a big chariat, the Lord will go on procession and hundreds of devotees will pull this cart with fervour and enthusiasm.
Srirama Navami, Hanumajayanthi, Narasimhajayanthi, Vaikunta Ekadasi, and Mahasivarathri are other festivals which are celebrated here on a large scale. On Mahasivarathri, Lord will go on procession on a small chariot.