both Saturn and Earth are moving backwards in their orbits of the Sun, with the Earth moving faster than Saturn.

Saturn and Earth must be on opposite sides of the Sun.

Earth is passing Saturn in its orbit, meaning Saturn appears to move backwards.

Both planets are on the same side of the Sun.

the gravitational effect of the Sun on Saturn causes it to reverse its rotation and hence orbital direction.

Saturn is temporarily moving backward in its orbit of the Sun.

the Moon is unusually far from Earth.

the Moon’s phase is new.

everyone on the night side of the Earth during the eclipse will see it.

the Moon will be travelling in the shadow cast by the Earth.

everyone on the night side of the Earth during the next few days will see it.

the Moon is unusually close to Earth.

the Moon will pass in between the Sun and Earth, and will cast a shadow on the Earth.

only specific locations will be able to see it.

the Moon’s phase is full.