Kaalratri Devi : The Goddess Worshiped On Seventh Day Of Navratri
The seventh form of Goddess Parvati is Kaalratri Devi, she also known as Goddess Shubhankari. She is the most ferocious and destructive form of Navdurga, She is is worshipped on the seventh day of Navratri i.e. Saptami.