Annamalai temple celebrates dozens of festivals throughout the year. The most important of these lasts for ten days during the tamil month of Karthigai, between November and December concluding with the celebration of Karthigai Deepam. A huge lamp is lit in a cauldron, containing three tons of ghee, at the top of the Annamalai hills during the Deepam indicating that the God is in the form of Light. We give annadanam to thousands of devotees besides having satsangs arranged during that period.