Maha Kumbh is one of the largest and most significant religious congregations in the world. The key 'snan' dates left are: January 29 (Mauni Amavasya - Second Shahi Snan), February 3 (Basant Panchami - Third Shahi Snan), February 12 (Maghi Purnima), and February 26 (Maha Shivaratri).