What phase of the Moon occurs when the Earth is between the Sun and the Moon?

The phase of the Moon that occurs when the Earth is directly between the Sun and the Moon is known as the full moon. During this phase, the entire illuminated portion of the Moon is visible from Earth, as sunlight fully illuminates the Moon's surface facing our planet.

In contrast to the new moon phase, where the Moon is positioned between the Earth and the Sun, resulting in the illuminated side of the Moon facing away from Earth, the full moon presents the opposite alignment. The waning gibbous and waxing crescent phases also do not occur under these conditions since they represent stages before and after the full moon, respectively, where the Moon is not completely illuminated in our view.