Dagr (meaning "day" in Old Norse), also known as Dagur, is the god and personification of day in Norse mythology. Dagr is the son of Dellingr and Nótt. He is the second son of Nott, and has a half-brother Audr, and a half-sister Jord (mother of Thor by Odin ), making him Thor's uncle. He is associated with the horse Skinfaxi. He appears in the Poetic Edda and the Prose Edda. The term "dagr" is commonly used as a common noun meaning "day" throughout many Old Norse works.