Explore Kali Puja 2026 date, Shyama Puja history, midnight muhurat, Goddess Kali's significance, rituals, offerings and celebrations across Bengal. Kali Puja, also known as Shyama Puja, is one of the most significant Hindu festivals celebrated in West Bengal and other parts of eastern India. Dedicated to Goddess Kali, the festival takes place on the Amavasya, or new-moon night, of the Hindu lunar month of Kartik.