Moon Phases
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New Moon
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Waxing Crescent
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First Quarter
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Waxing Gibbous
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Full Moon
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Waning Gibbous
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Last Quarter
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Waning Crescent
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New
Moon - The Moon's unilluminated side is facing the Earth. The Moon is
not visible (except during a solar eclipse).
Waxing
Crescent - The Moon appears to be partly but less than one-half
illuminated by direct sunlight. The fraction of the Moon's disk that is
illuminated is increasing.
First
Quarter - One-half of the Moon appears to be illuminated by direct
sunlight. The fraction of the Moon's disk that is illuminated is increasing.
Waxing
Gibbous - The Moon appears to be more than one-half but not fully
illuminated by direct sunlight. The fraction of the Moon's disk that is
illuminated is increasing.
Full
Moon - The Moon's illuminated side is facing the Earth. The Moon
appears to be completely illuminated by direct sunlight.
Waning
Gibbous - The Moon appears to be more than one-half but not fully
illuminated by direct sunlight. The fraction of the Moon's disk that is
illuminated is decreasing.
Last
Quarter - One-half of the Moon appears to be illuminated by direct
sunlight. The fraction of the Moon's disk that is illuminated is decreasing.
Waning
Crescent - The Moon appears to be partly but less than one-half
illuminated by direct sunlight. The fraction of the Moon's disk that is
illuminated is decreasing.
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