Today's exact layer
Moon calendarDecember 2017
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.
Lunar calendar
Lunar focus
December 2017 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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Follow the month as a moving sky path
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Dec 1
Waxing Gibbous
91% lit, Moon in Gemini 9 deg.
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Sign changes this month: Dec 1 Gemini, Dec 22 Cancer.
DAILY LUNAR DATA
December 2017 moon phases
Each day is computed from astronomical Moon phase angle and lunar longitude, then summarized into a scan-friendly calendar.
Day 1
Waxing Gibbous
91% lit
Gemini 9 deg
Age 11.9d
Day 2
Full Moon
97% lit
Gemini 10 deg
Age 13d
Day 3
Full Moon
99% lit
Gemini 11 deg
Age 14.2d
Day 4
Full Moon
99% lit
Gemini 12 deg
Age 15.4d
Day 5
Full Moon
96% lit
Gemini 13 deg
Age 16.5d
Day 6
Waning Gibbous
91% lit
Gemini 14 deg
Age 17.7d
Day 7
Waning Gibbous
83% lit
Gemini 15 deg
Age 18.8d
Day 8
Waning Gibbous
73% lit
Gemini 16 deg
Age 19.9d
Day 9
Last Quarter
63% lit
Gemini 17 deg
Age 21d
Day 10
Last Quarter
52% lit
Gemini 18 deg
Age 22d
Day 11
Last Quarter
41% lit
Gemini 19 deg
Age 23d
Day 12
Last Quarter
31% lit
Gemini 20 deg
Age 23.9d
Day 13
Waning Crescent
23% lit
Gemini 21 deg
Age 24.9d
Day 14
Waning Crescent
15% lit
Gemini 22 deg
Age 25.8d
Day 15
Waning Crescent
9% lit
Gemini 23 deg
Age 26.7d
Day 16
Waning Crescent
4% lit
Gemini 24 deg
Age 27.6d
Day 17
New Moon
1% lit
Gemini 25 deg
Age 28.5d
Day 18
New Moon
0% lit
Gemini 26 deg
Age 29.4d
Day 19
New Moon
1% lit
Gemini 27 deg
Age 0.8d
Day 20
New Moon
3% lit
Gemini 28 deg
Age 1.7d
Day 21
Waxing Crescent
7% lit
Gemini 29 deg
Age 2.6d
Day 22
Waxing Crescent
13% lit
Cancer 0 deg
Age 3.5d
Day 23
Waxing Crescent
20% lit
Cancer 1 deg
Age 4.4d
Day 24
Waxing Crescent
28% lit
Cancer 2 deg
Age 5.3d
Day 25
First Quarter
38% lit
Cancer 3 deg
Age 6.2d
Day 26
First Quarter
48% lit
Cancer 4 deg
Age 7.2d
Day 27
First Quarter
58% lit
Cancer 5 deg
Age 8.2d
Day 28
First Quarter
69% lit
Cancer 6 deg
Age 9.2d
Day 29
Waxing Gibbous
79% lit
Cancer 8 deg
Age 10.3d
Day 30
Waxing Gibbous
87% lit
Cancer 9 deg
Age 11.4d
Day 31
Waxing Gibbous
94% lit
Cancer 10 deg
Age 12.5d