Ratri, often also called Ratridevi, is the goddess of night in the Vedas and the mythology of India and Hinduism. She is sister to Ushas, the Vedic goddess of Dawn. Her name is the common/ordinary word for nighttime in Indian languages like Kannada, Bengali, Tamil, Telugu, Malayalam.
The goddess Ratri is a minor character in Roger Zelazny's science fiction novel Lord of Light, who encounters and aids the protagonist in his battle against the other gods.
- Hindu Goddesses: Vision of the Divine Feminine in the Hindu Religious Traditions (ISBN 81-208-0379-5) by David Kinsley