In ancient Roman religion and mythology, Janus is the god who presides over new beginnings and transitions, therefore, of gates, gateways, doors, doorways, portals, passageways, bridges, time, movement and endings.
He was usually depicted with two faces looking in opposite directions since he looks to the past and to the future, symbolising change and transitions, of one condition to another, of one vision to another and of one universe to another, whether abstract or concrete, sacred or profane and as a Uranic god he holds the key to the sky.
All new beginnings and transitions are protected by him.