In Mesoamerican culture, Tonatiuh is an Aztec sun deity of the daytime sky who rules the cardinal direction of east. According to Aztec Mythology, Tonatiuh was known as "The Fifth Sun" and was given a calendar name of naui olin, which means "4 Movement". Represented as a fierce and warlike god, he is first seen in Early Postclassic art of the Pre-Columbian civilization known as the Toltec. Tonatiuh's symbolic association with the eagle alludes to the Aztec belief of his journey as the present sun, travelling across the sky each day, where he descended in the west and ascended in the east. It was thought that his journey was sustained by the daily sacrifice of humans. His Nahuatl name can also be translated to "He Who Goes Forth Shining" or "He Who Makes The Day." Tonatiuh was thought to be the central deity on the Aztec calendar stone but is no longer identified as such. In Toltec culture, Tonatiuh is often associated with Quetzalcoatl in his manifestation as the morning star aspect of the planet Venus.