13 MAY 2027
Is it worth watching?
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First Quarter
The Moon is high in the evening. Good for lunar surface detail.
50% ILLUMINATED
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What you will see
The illuminated part of the lunar disk matches the current phase; relief is most contrasted along the terminator.
Why it happens
The phase changes with the Sun–Earth–Moon geometry. We see a changing fraction of the Moon’s always half-lit surface.
How to watch
The phase is obvious to the naked eye. Binoculars reveal craters along the boundary between light and shadow.
Why it matters
The Moon is high in the evening sky.
Next similar chance
11 June 2027