What does a Full Moon mean?
There are four moon phases — New Moon, First Quarter, Full Moon, and Last Quarter.
A Full Moon means the Earth is between the Moon and the Sun and the Moon’s nearside is entirely lit.
The Moon doesn’t change shape and doesn’t produce any light – how we see it is due to the brightness from the Sun reflecting on it.
And Earth Sky writes: “A full moon is opposite the sun in its orbit around Earth.
“Its sunlit side is entirely visible from Earth. The moon appears full to the eye for two to three nights.
“However, astronomers regard the moon as full at a precisely defined instant, when the moon is exactly 180 degrees opposite the sun in ecliptic longitude.
“It’s that feature of a full moon – the fact that it’s opposite the sun as viewed from Earth – that causes a full moon to look full and round.”