The god Quetzalcoatl, is the Feathered Serpent or Precious Twin. He is the Aztec god of intelligence and self-reflection, a patron of priests.
Quetzalcoatl is a primordial god of creation, a giver of life. With his opposite Tezcatlipoca he created the world. Quetzalcoatl is also called White Tezcatlipoca, to contrast him to the black Tezcatlipoca.
As the Lord of the East he is associated with the morning star, his twin brother Xolotl was the evening star (Venus). As the morning star he was known by the name Tlahuizcalpantecuhtli, “lord of the star of the dawn.” Another representation of Quetzalcoatl is Ehecatl, the Wind God. His calendrical name is Ce Acatl (One Reed).
After the last world, the Fourth Sun had been destroyed, Quetzalcoatl went to Mictlan, the land of the death, and created our current world, the Fifth Sun, by using his own blood to give new life to bones. Quetzalcoatl is also the giver of maize (corn) to mankind.
In the tonalpohualli, Quetzalcoatl rules over both the second day, Ehecatl (wind), and the second trecena, Ocelotl(jaguar). He is Lord of the Day for days with number 9 (“chicunahui” in Nahuatl).
My research indicates that this myth may have been started by Comets that would have been visible during this time as often he is described as the feathered serpent.