Goddess Ratri is a goddess mentioned in the Vedas. In Hinduism, Goddess Ratri is associated with night. But she is not associated with dark night. A single hymn is dedicated to her in the Rig Veda.
She is the daughter of Heaven and the goddess of the starlit
night. She fills the valleys and the heights, driving away the darkness with
her light.
She is a manifestation of Goddess Aditi, who nourishes and
sustains the universe and all existence.
She is worshipped to overcome fear, sickness, harm, evil and
release from the bondage or suffering.