Hemera

Hemera, the primordial goddess of the Day. She is the daughter of Nyx and Erebus (Night and Darkness) and the sister, and in some myths lover, of Aether (light). Later on in a few myths Hemera gets replaced by Eos (Goddess of the Dawn).

Duty
At the conclusion of everyday Nyx and Erebus emerge from Tartarus and into the Garden of the Hesperides where Atlas hold up the sky. Hand in hand they stand at the edge of the mountain and pull veils of darkness across the sky. They cover up the sun and send dreams to sleeping mortals. When they are finished they pass by Hemera and Aether on the way back to Tartarus. Now the two gods bring day back to the world. Hemera chases the darkness from the sky as Aether casts light down to earth.