Moon phase tonight
Monday, December 21, 2026
Moon phase on December 21
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Waxing Gibbous
92% illuminated · 12.1 days into the lunar cycle
Illumination
92%
QUIET
Next Full Moon
Dec 243d away
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Next New Moon
Jan 717d away
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Sky-watching conditions
With 92% of the moon lit, expect significant moonlight — only a bright, active aurora is likely to stand out against the sky glow. Check the aurora forecast for tonight's Kp index and visibility odds.