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Field Guide / Sky Events

Waning Gibbous

More than half the Moon is lit, now on the left, and shrinking after full. It rises in the evening and stays up into the morning.

Computed diagram of a Waning Gibbous Moon: most of the disc lit on the left, with a dark sliver on the right
Computed diagram of the phase as seen from the Northern Hemisphere.
Type
Moon Phases
Best season
Any time of year
Gear
Naked eye
When to look
Between full Moon and last quarter, over about a week
Lit part
More than half, on the left, shrinking
Rises and sets
Rises after sunset and sets in the morning
Best for
Looking at the Moon in the morning sky
Age
About 15 to 21 days after new Moon

What you will see

  • A bright Moon that rises later each night.
  • Bright moonlight in the late evening and morning.
  • The early evening sky is dark for a while before moonrise.

How to watch

  • Look for the Moon in the morning sky.
  • Faint-object stargazing becomes possible in the early evening before moonrise.

Field notes

The waning gibbous Moon rises later each night, giving you a little more dark sky in the early evening each day.

Related guides

Dates and times repeat from year to year but shift slightly, and the Moon's phase and the planets' positions are different every year. Check a current source such as NASA, the American Meteor Society, or a stargazing app before you plan a night out, and check the weather forecast for clear skies.

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