Moon phase tonight
Monday, May 31, 2027
Moon phase on May 31
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Waning Crescent
18% illuminated · 25.4 days into the lunar cycle
Illumination
18%
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Next Full Moon
Jun 1919d away
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Next New Moon
Jun 44d away
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Sky-watching conditions
With 18% of the moon lit, expect minimal moonlight interference — good conditions for aurora and deep-sky viewing. Check the aurora forecast for tonight's Kp index and visibility odds.