God Nanna rules the Moon
The Sumerian Nanna is the Moon God. His name for the Acadians is Sin. He is the embodiment of wisdom and the deity of fertility together with his wife and with Inanna or Venus, as we know her in heaven. His children are Utu or Shamash- the Sun and Inanna-Venus. The number of the Moon is 30, due to the number of the lunar days.