Navratri is a festival that pays ode to the feminine power, and Goddess Durga epitomises Shakti. During these nine days, devotees keep a fast and worship each of her nine forms. On the Seventh day, the Kalratri avatar of the Mother Goddess is worshipped. know the Navratri 2021 day 7 Maa Kalratri Puja vidhi, mantra and tithi.