It is celebrated in a special manner in Thiruvannamalai. Lord Shiva asks Lord Brahma and Lord Vishnu to find out the exact locatin of his head and his feet. Since Lord Shiva takes a gigantic form, they are not able to find out anywhere. Then Lord Shiva takes the form of a jyothi(light of fire) on the hill of Thiruvannamali. Therefore, this festival is also known as Annamalai Deepam. Here, a special torch is lighted on the zenith of the hill and it is believed that Lord Shiva’s jothi will be visible on this day.
Lord Muruga took the form of six babies in a lake called “Saravana Poigai”. On this day, all his six forms were united by Parvathi(his mother) and this way, he had six faces. Special poojas are performed to Lord Muruga. On this day, we clean the houses. In the evening, we draw kolams(rangoli) in the front of the house and also place some lamps on it. We place the lamps(Agal) in the pooja and light them . Then we do the deeparathana and move the lamps to different places in the house. The lamps will glow all over the streets on this day. We arrange the lamps near the doors and windows and also in the balconies.In this way, we celebrate for three days.