Where does the Greek God Janus spend most of his time in most myths?

In most myths, the Greek god Janus is primarily associated with doorways, transitions, and beginnings, often depicted as standing at thresholds. He is not traditionally considered a Greek god, as he is more commonly recognized in Roman mythology, where he spends his time at the gates and entrances of homes and cities, symbolizing change and duality. Janus is often invoked during new beginnings, such as the start of the year or significant life events.