Today's exact layer
Moon calendarDecember 2031
Monthly Moon phase calendar
Follow each day's phase, illumination, Moon sign, moon age, and cycle progress. Use it to time starts, refinements, releases, and rest.
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December 2031 moon map
Open today's exact Moon result when you want local visibility, the current phase, and a guided next step.
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Dec 1
Waning Gibbous
95% lit, Moon in Gemini 9 deg.
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Sign changes this month: Dec 1 Gemini, Dec 23 Cancer.
DAILY LUNAR DATA
December 2031 moon phases
Each day is computed from astronomical Moon phase angle and lunar longitude, then summarized into a scan-friendly calendar.
Day 1
Waning Gibbous
95% lit
Gemini 9 deg
Age 16.8d
Day 2
Waning Gibbous
91% lit
Gemini 10 deg
Age 17.7d
Day 3
Waning Gibbous
84% lit
Gemini 11 deg
Age 18.6d
Day 4
Waning Gibbous
77% lit
Gemini 12 deg
Age 19.5d
Day 5
Last Quarter
68% lit
Gemini 13 deg
Age 20.4d
Day 6
Last Quarter
59% lit
Gemini 14 deg
Age 21.3d
Day 7
Last Quarter
50% lit
Gemini 15 deg
Age 22.2d
Day 8
Last Quarter
40% lit
Gemini 16 deg
Age 23.1d
Day 9
Waning Crescent
30% lit
Gemini 17 deg
Age 24d
Day 10
Waning Crescent
21% lit
Gemini 18 deg
Age 25d
Day 11
Waning Crescent
13% lit
Gemini 19 deg
Age 26d
Day 12
Waning Crescent
7% lit
Gemini 20 deg
Age 27.1d
Day 13
New Moon
2% lit
Gemini 21 deg
Age 28.2d
Day 14
New Moon
0% lit
Gemini 22 deg
Age 29.3d
Day 15
New Moon
1% lit
Gemini 23 deg
Age 0.9d
Day 16
Waxing Crescent
5% lit
Gemini 24 deg
Age 2d
Day 17
Waxing Crescent
11% lit
Gemini 25 deg
Age 3.2d
Day 18
Waxing Crescent
20% lit
Gemini 26 deg
Age 4.3d
Day 19
Waxing Crescent
30% lit
Gemini 27 deg
Age 5.4d
Day 20
First Quarter
41% lit
Gemini 28 deg
Age 6.5d
Day 21
First Quarter
52% lit
Gemini 29 deg
Age 7.6d
Day 22
First Quarter
63% lit
Gemini 30 deg
Age 8.6d
Day 23
Waxing Gibbous
72% lit
Cancer 1 deg
Age 9.6d
Day 24
Waxing Gibbous
81% lit
Cancer 2 deg
Age 10.5d
Day 25
Waxing Gibbous
88% lit
Cancer 3 deg
Age 11.5d
Day 26
Waxing Gibbous
94% lit
Cancer 4 deg
Age 12.4d
Day 27
Full Moon
98% lit
Cancer 5 deg
Age 13.3d
Day 28
Full Moon
100% lit
Cancer 6 deg
Age 14.3d
Day 29
Full Moon
100% lit
Cancer 7 deg
Age 15.2d
Day 30
Full Moon
98% lit
Cancer 8 deg
Age 16.1d
Day 31
Waning Gibbous
95% lit
Cancer 9 deg
Age 16.9d