Kaalratri or Kali is worshipped on the seventh day of Navaratri. She is the one of the fiercest forms of Durga. Kaal Ratri means the One who is “the Death of Kaal”. Here Kaal is dedicated as time & death and ratri means night. Kaal Ratri is the one who destroys ignorance and removes darkness. This form primarily depicts that life also has a dark side – the violence of Mother Nature, creating havoc and removing all dirt.