Waxing Gibbous


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Day of Lunar Cycle


Synodic Position

Between Eastern Quadrature and Opposition

Angle of Sun-Earth-Moon

The Moon is falling between 90° and 180° behind (eastward) the Sun

Illuminated side

Mostly-turned toward Earth

Near side

Mostly illuminated

Overlap between near side and illuminated side

More than half, less than total

Proportion of whole Moon that is both illuminated and near

Between 25 and 50%

Which part of the near side is illuminated?

Westward or Right side (facing south)

Where visible at sunset?

Between overhead and the eastern horizon, becoming ever lower in east

Where visible at midnight?

Between overhead and the western horizon, becoming ever higher each night

Where visible at sunrise?

Not visible; beneath western horizon

Where visible at noon?

Not visible; rises in the east in the evening before sunset

Meridian Transit

Between sunset and midnight

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