Full Moon is halfway between them on one side, and New Moon is halfway between them on the other side.
It is: 4/9
Three Eighths. 3/8, 3:8, three over eight.
one third There are an infinite number of fractions between the figures.
There are many different fractions between one third (1/3) and one half (1/2). The fraction that is exactly halfway between them is five twelfths (5/12).
Third quarter moon is when the moon is halfway between full and new, while on the way to new. If you stand with your back to the sun, actually where the sun would be because its probably below the horizon, a third quarter moon will be about 90 degrees to your left, and the left face will be illuminated.
Phase between third quarter and new moon is called a waning crescent