Lunar distance (navigation)

Lunar distance, in the context of navigation, refers to the distance between the Earth and the Moon, which is an important reference point in celestial navigation. Specifically, "lunar distance" can denote a method used by navigators in the past to determine their position at sea using the angle between the Moon and another celestial body, typically a star or the Sun. Historically, navigators would measure the angular distance between the Moon and a known star at a specific time.