Ratri

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.

Fiction

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.

Further reading