Why do we ignite a lamp in Thirukarthika? - Karthiga deepa thirunal!!!

Annamalai lantern is the name given to the lamp mounted on the top of a hill in Thiruvannamalai on Karthika deepa Thirunal. The lamp is so large that it can be seen from the surrounding area. In the month of Karthika, the day on which the star Karthika and the full moon come together is celebrated as Thirukarthika Deepam Thirunal. Karthika Deepam is scheduled to be celebrated on november 19. Today the barani deepam is mounted. To do this, they twist a 24-inch cloth in a large container and roll it with camphor powder. It looks as small as a lamp on a mountain when viewed from a distance. Almost 60 km away from the mountain this flame looks like a torch.

Storms appear during the rainy season so it usually rains heavily. Although rain is a good thing, it is not uncommon for a storm to cause a lot of damage. It is hoped that by mounting a large torch to minimize the impact of the storm, the storm will be prevented from appearing and its speed will be mitigated even if it does. The light that appears in it is considered as lord Saraswati and the Heat is represented as lord Parvati.

Thus the lamp connects our soul and god through the hidden object in it.

During the ignite of karthiga deepam, we assume that lord Eesan's laughter will spread all over the world and shine like a torch. The world itself is bright. In addition, Agni became a remedy to the destruction of evil spirits and enlightened the world. 

Barani Deepam: The barani deepam is lit in the early morning at the Annamalaiyar temple and then displayed as five lamps in the Ardha Mandapam. people used to ignite five lamps toward barani deepam at 6.00pm in the evening to initiate karthika deepa festival as first day at home.Karthika deepa Thirunal is celebrated as a way of worshiping the radiance of Lord Shiva.