In Hinduism, Mahanavami has great significance for the occult among the Saktheyas. Followers of Lord Vishnu, the Vaishnavas perform special pujas and rituals on this day. On this day in Tirumala, the Brahmaotsav is celebrated to honor lord Balaji.
India is a diverse country and Mahanavami is celebrated in many ways across the nation. In the northern part of India, Kanya Puja is observed on this day, while in Gujarat, Mahanavmi is celebrated with Garba and dandiya raas as other eight days of Navratri. In the east, Navami is of great significance in Bengal as it is the last day of Durga Puja.
In the southern region of India, Suhasini Puja is performed. Married women, a symbol of Maha Shakti, are offered the Shodasopachara Puja. Followers of Dus Mahavidyas worship Matangi on this day and Maa Siddhidhatri is worshipped by Navdurga Sampradaya followers.
Here is a powerful Mahishasuramardhini stotra:
ayi giri nandini, nandita medini, visva vinodini, nandinute ||
giri vara vindhya shirodhini vasini vishnuvilaasini jisnunute ||
bhagavati he shitikaNthakutumbini bhoorikutumbini bhoorikrute ||
Astrologically, people who are surrounded by enemies, feeling weighed down by adversaries, legal battles, and other disputes or the evil eye, should worship Maa Durga on this day. In fact, such is the austerity of this day that all malefic planets or dosha of Mars, Saturn, Rahu and Moon can be nullified on this day.