Ma Kaalratri is worshipped on the 7th day of Navratri. Kaal means both time as well as death & Ratri refers to night or darkness/ ignorance. Hence, Ma Kaalratri is the one who brings death to darkness or end of ignorance. She is commonly referred to as Kali.
She is the more terrorizing form of Ma Durga. Her complexion is dark as night and untied bountiful hair. She has 4 hands. A schimitar and thunderbolt are held in 2 hands while the other 2 hands are held in form of giving and protecting. She has three eyes and flames come out of her nostrils when she breathes. Her necklace shines like moon in the night. Her mount is a Donkey. She is also fondly referred to as Shubhankari as she brings auspicious results to her devotees.
Ma Kaalratri is the form of Adi Shakti that kills evil-doers & thus ends cruelty. She is extremely benevolent towards her devotees and rewards them by removing sorrows from their life.
May Maa Kalratri be benevolent towards all of us..