The Star Maham is a powerful star in the 27 stars group. Every month once in 27 days. Maham star will have its own Rasi Simha. The festival on Maham star in Masi is said to he Maha festival.
Once in every 12 years Masi Maga Magam is celebrated as a a sacred festival attracting huge sea of people all over the sacred land. The maham day of Masi Month, is called a day of MAMANGAM, This Mamangam has been in the course of time has been named as Maha Magam festival.