phase of the moon

Types:

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new moon, new phase of the moon

the time at which the Moon appears as a narrow waxing crescent

half-moon

the time at which the Moon is at first or last quarter when half its face is illuminated

full, full moon, full phase of the moon, full-of-the-moon

the time when the Moon is fully illuminated

first quarter

the first fourth of the Moon's period of revolution around the Earth

last quarter

the last fourth of the Moon's period of revolution around the Earth

harvest moon

the full moon nearest the September equinox

Type of:

phase

(astronomy) the particular appearance of a body's state of illumination (especially one of the recurring shapes of the part of Earth's moon that is illuminated by the sun)

period, period of time, time period

an amount of time