Nothing special. The Moon has days and nights like Earth does, except on the Moon it takes 29.5 days for one lunar "day" and "night".
When you look at the Moon and it is "waning", what you are seeing is night falling (slowly) on the side of the Moon that we can see.
the moon is getting smaller. waning means to increase so it makes sense.
after the moon is full is shrinks back to a waning quarter
waning crescent
After a waning moon one gets a new moon.
The moon is waning when it is getting smaller
Waxing
Waning gibbous, Third Quarter and Waning Crescent are the 'waning' moon phases.
new moon,waxing crescent, half moon, waxing gibbous, full moon, waning gibbous, half moon, waningcrescentthen it happens all over again
The correct term is a 'WANING Moon. From Full Moon to the next New Moon, the moon is said to be WANING. From Full Moon to Last Quarter is it a WANING GIBBOUS Moon. From Last Quarter to the next New Moon it is a WANING CRESCENT Moon. In very clear weather you will see the waning crescent Moon, with the 'ghost' of the Moon's full circle. In old lore it is said to be 'The old moon, with the new moon in her arms'.
Waning, or waning gibbous.
the moons lightness gets weaker ( darker in the light).
The moon is waxing from the new moon to the full moon and waning from the full moon to the new moon. Remember this: when the right is bright it's waxing and when the left is bright it is waning