We celebrate the festival for nine nights and ten days. The festival occurs in the month of October or November. Moreover, in India, people celebrate it four times every year. We refer to these times as Sharada Navratri, Vasanta Navratri, Magha Navratri and Ashada Navratri.
Further, the most famous one is Sharada Navaratri that people all over the country celebrate actively. The people living in the North-eastern and Eastern states refer to it as Durga Puja. According to the holy scriptures, Mahishasura was a demon king. Also, he was an ardent worshipper of Lord Siva and got massive powers.
Misusing his power, he committed a lot of wrongdoings and troubled the people. Thus, the holy trinity of Brahma, Vishnu, and Siva decided to do something. In other words, all their powers got together to create Goddess Durga.
It was done to protect the world from the demon king. Thus, in the Northern, Western and Southern states, people refer to this festival as Rama Lila. Similarly, people also refer to it as Dussehra in these regions. Dussehra is known for symbolizing the victory of Lord Rama over Raavan, the demon king.