New Moon
December 10, 2121
12:47 AM UTC UTC in Sagittarius
New Moon in SagittariusLunation Calendar
Moon Phases December 2121: New Moon, Full Moon & Signs
Moon phases for December 2121 with calculated UTC times and zodiac signs. New Moon: December 10, 2121 at 12:47 AM UTC in Sagittarius. Full Moon: December 24, 2121 at 01:05 AM UTC in Cancer. The month view below also tracks Moon sign ingresses and local-time conversions.
Key Dates
New Moon and Full Moon in December 2121
Full Moon
December 24, 2121
01:05 AM UTC UTC in Cancer
Full Moon in CancerCalculation Basis
Hermetikon calculates these lunar timings from its astronomy engine and stores the canonical moments in UTC. They are Hermetikon reference timings, not Swiss Ephemeris output; local times are derived from the UTC moment.
Local personalization
Local timing for the December 2121 moon calendar
The calendar stays canonical in UTC for search, citations, and stable reference. Apply your own coordinates here to convert featured moments into local time and add local ascendant and planetary-hour context.
Current mode
No local coordinates applied yet.
Event times below render in your browser timezone: UTC.
Browser timezone
UTC
Local conversions update automatically in this browser.
Current moon
December 2121 lunar calendar
Use this panel to personalize the December 2121 calendar.
Ascendant
Apply a location
Local horizon from your coordinates.
Planetary hour
Apply a location
Times appear after a location is applied.
Featured local timings
Last Quarter in Virgo
Dec 1, 2121, 11:39 PM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
New Moon in Sagittarius
Dec 10, 2121, 12:47 AM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
First Quarter in Pisces
Dec 17, 2121, 4:05 AM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
Full Moon in Cancer
Dec 24, 2121, 1:05 AM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
Lunar Phase Events
Last Quarter
in VirgoDateDecember 1, 2121
Time (UTC)11:39 PM UTC
Local: Dec 1, 2121, 11:39 PM UTC
SignVirgo
The Moon stands in its third square to the Sun, now waning and decreasing in light. Classical doctrine marks this as a moment of release, clearing, and dissolution as the cycle moves toward its end.
Last Quarter in VirgoNew Moon
in SagittariusDateDecember 10, 2121
Time (UTC)12:47 AM UTC
Local: Dec 10, 2121, 12:47 AM UTC
SignSagittarius
The Moon conjoins the Sun, becoming invisible and combust. Classical doctrine regards this as the weakest lunar condition - the Moon is without light, applying to the Sun, and incapable of reflecting its rays.
New Moon in SagittariusFirst Quarter
in PiscesDateDecember 17, 2121
Time (UTC)04:05 AM UTC
Local: Dec 17, 2121, 4:05 AM UTC
SignPisces
The Moon stands in square (quartile) to the Sun, having completed one quarter of its synodic cycle. Classical doctrine marks this as a moment of tension, decision, and action - the Moon's will presses against the solar principle.
First Quarter in PiscesFull Moon
in CancerDateDecember 24, 2121
Time (UTC)01:05 AM UTC
Local: Dec 24, 2121, 1:05 AM UTC
SignCancer
The Moon stands in opposition to the Sun, achieving maximum illumination. Classical doctrine treats the Full Moon as a peak of lunar expression - the Moon is fully lit, powerful, and separated from the Sun by the widest arc.
Full Moon in CancerLast Quarter
in LibraDateDecember 31, 2121
Time (UTC)09:17 PM UTC
Local: Dec 31, 2121, 9:17 PM UTC
SignLibra
The Moon stands in its third square to the Sun, now waning and decreasing in light. Classical doctrine marks this as a moment of release, clearing, and dissolution as the cycle moves toward its end.
Last Quarter in LibraDaily Moon Lookup - December 2121
Each row uses a noon UTC reference for the daily phase and Moon sign. Major lunations and sign ingresses keep their calculated UTC moments.
| Date | Phase | Moon Sign | Calculated Events |
|---|---|---|---|
| December 1 | Waning Gibbous55% illuminated | Virgonoon UTC reference | |
| December 2 | Last Quarter45% illuminated | Virgonoon UTC reference | No major lunation or sign ingress. |
| December 3 | Last Quarter36% illuminated | Virgonoon UTC reference | |
| December 4 | Last Quarter27% illuminated | Libranoon UTC reference | No major lunation or sign ingress. |
| December 5 | Last Quarter19% illuminated | Libranoon UTC reference | No major lunation or sign ingress. |
| December 6 | Waning Crescent12% illuminated | Scorpionoon UTC reference | |
| December 7 | Waning Crescent6% illuminated | Scorpionoon UTC reference | No major lunation or sign ingress. |
| December 8 | Waning Crescent2% illuminated | Scorpionoon UTC reference | |
| December 9 | Waning Crescent0% illuminated | Sagittariusnoon UTC reference | No major lunation or sign ingress. |
| December 10 | New Moon0% illuminated | Sagittariusnoon UTC reference | |
| December 11 | New Moon2% illuminated | Capricornnoon UTC reference | No major lunation or sign ingress. |
| December 12 | New Moon7% illuminated | Capricornnoon UTC reference | No major lunation or sign ingress. |
| December 13 | New Moon13% illuminated | Aquariusnoon UTC reference | |
| December 14 | Waxing Crescent22% illuminated | Aquariusnoon UTC reference | No major lunation or sign ingress. |
| December 15 | Waxing Crescent31% illuminated | Piscesnoon UTC reference | |
| December 16 | Waxing Crescent42% illuminated | Piscesnoon UTC reference | No major lunation or sign ingress. |
| December 17 | First Quarter54% illuminated | Piscesnoon UTC reference | |
| December 18 | First Quarter65% illuminated | Ariesnoon UTC reference | No major lunation or sign ingress. |
| December 19 | First Quarter76% illuminated | Ariesnoon UTC reference | |
| December 20 | First Quarter85% illuminated | Taurusnoon UTC reference | No major lunation or sign ingress. |
| December 21 | Waxing Gibbous92% illuminated | Taurusnoon UTC reference | |
| December 22 | Waxing Gibbous97% illuminated | Gemininoon UTC reference | No major lunation or sign ingress. |
| December 23 | Waxing Gibbous100% illuminated | Gemininoon UTC reference | |
| December 24 | Full Moon100% illuminated | Cancernoon UTC reference | |
| December 25 | Full Moon98% illuminated | Cancernoon UTC reference | No major lunation or sign ingress. |
| December 26 | Full Moon93% illuminated | Leonoon UTC reference | |
| December 27 | Full Moon87% illuminated | Leonoon UTC reference | No major lunation or sign ingress. |
| December 28 | Waning Gibbous80% illuminated | Leonoon UTC reference | |
| December 29 | Waning Gibbous72% illuminated | Virgonoon UTC reference | No major lunation or sign ingress. |
| December 30 | Waning Gibbous63% illuminated | Virgonoon UTC reference | No major lunation or sign ingress. |
| December 31 | Waning Gibbous54% illuminated | Libranoon UTC reference |
Month View Calendar - December 2121
Each day shows the Moon sign at noon UTC, any major phase event, and calculated UTC Moon sign ingresses. Use the personalization panel above for local-time conversion and location-specific context.
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
10
17
Moon Sign Runs
A compact view of how the Moon moves through the zodiac across the month.
Moon Sign Ingresses
These are the calculated UTC sign changes for the Moon in December 2121, with local-time conversion shown below each ingress.
December 1, 2121 at 04:09 AM UTC UTC
Local time: Dec 1, 2121, 4:09 AM UTC
The Moon leaves Leo and enters Virgo.
December 3, 2121 at 04:34 PM UTC UTC
Local time: Dec 3, 2121, 4:34 PM UTC
The Moon leaves Virgo and enters Libra.
December 6, 2121 at 04:50 AM UTC UTC
Local time: Dec 6, 2121, 4:50 AM UTC
The Moon leaves Libra and enters Scorpio.
December 8, 2121 at 03:09 PM UTC UTC
Local time: Dec 8, 2121, 3:09 PM UTC
The Moon leaves Scorpio and enters Sagittarius.
December 10, 2121 at 11:02 PM UTC UTC
Local time: Dec 10, 2121, 11:02 PM UTC
The Moon leaves Sagittarius and enters Capricorn.
December 13, 2121 at 04:51 AM UTC UTC
Local time: Dec 13, 2121, 4:51 AM UTC
The Moon leaves Capricorn and enters Aquarius.
December 15, 2121 at 09:07 AM UTC UTC
Local time: Dec 15, 2121, 9:07 AM UTC
The Moon leaves Aquarius and enters Pisces.
December 17, 2121 at 12:15 PM UTC UTC
Local time: Dec 17, 2121, 12:15 PM UTC
The Moon leaves Pisces and enters Aries.
December 19, 2121 at 02:46 PM UTC UTC
Local time: Dec 19, 2121, 2:46 PM UTC
The Moon leaves Aries and enters Taurus.
December 21, 2121 at 05:23 PM UTC UTC
Local time: Dec 21, 2121, 5:23 PM UTC
The Moon leaves Taurus and enters Gemini.
December 23, 2121 at 09:16 PM UTC UTC
Local time: Dec 23, 2121, 9:16 PM UTC
The Moon leaves Gemini and enters Cancer.
December 26, 2121 at 03:33 AM UTC UTC
Local time: Dec 26, 2121, 3:33 AM UTC
The Moon leaves Cancer and enters Leo.
December 28, 2121 at 12:54 PM UTC UTC
Local time: Dec 28, 2121, 12:54 PM UTC
The Moon leaves Leo and enters Virgo.
December 31, 2121 at 12:46 AM UTC UTC
Local time: Dec 31, 2121, 12:46 AM UTC
The Moon leaves Virgo and enters Libra.
Classical Sources on Monthly Lunations
These citations explain why classical astrologers tracked monthly new and full moons, quarterly turns, and conjunction-based month judgments.
Tetrabiblos
Claudius Ptolemy
150
"The second part of the consideration relates to each month, and requires a similar observation of the new or full Moon first taking place on the Sun’s progress through each sign: and it must be remembered, that, if a new Moon should have happened at a period nearest to the Sun’s transit over the past tropical or equinoctial point, the new Moon also in each succeeding sign, until the commencement of the next quarter, are to be observed; but, if a full Moon should have so happened, then similar observation is to be made of each subsequent full Moon. The angles, also, must be duly attended to, as well as the planets and stars ruling in both the places [104] ; and especially the nearest phases, applications, and separations of the planets, and their properties. The peculiar qualities of the two places, and the winds, liable to be excited by the planets themselves and by those parts of the signs in which they may be situated, are likewise to be considered; and also that particular wind, which is indicated by the direction of the Moon’s ecliptical latitude. By the aid of these observations, and by weighing and comparing the existing vigour of each of the several properties and qualities, the general constitution of the atmosphere during each month may be predicted"
CHAPTER XIII MODE OF CONSIDERATION FOR PARTICULAR CONSTITUTIONS OF THE ATMOSPHEREOpen in Reader
Tetrabiblos
Claudius Ptolemy
150
"The third part of this consideration appertains to significations applying more minutely, and points out their force or weakness. In this case, the partile configurations of the Sun and Moon, at the intermediate quarters, as well as at the new or full Moon, are to be attentively regarded; since there is a certain variation in the constitution of the atmosphere, which usually commences about three days before, and sometimes, also, about three days after the Moon has equated her course to the Sun"
CHAPTER XIII MODE OF CONSIDERATION FOR PARTICULAR CONSTITUTIONS OF THE ATMOSPHEREOpen in Reader
Clavis Astrologiae Elimata
Henry Coley
1669
"When you shall make the minute of a ☌ your Basis or Radix, you may give judgment of the change of Weather in that moneth; for your judgment shall be framed according to the principal Dominator of the Angle of every Figure, for that Planet overcomes in the Nature of the Aire; assuming together with these things the Quality of the present time, viz. the season of the year"
Page 280Open in Reader
Books behind the December 2121 moon calendar
Open the cited books and chapters behind the monthly lunation calendar.
Moon Phases December 2121 - FAQ
When is the full moon in December 2121?
The full moon in December 2121 is on December 24, 2121 at 01:05 AM UTC UTC, in Cancer. The page also converts that moment into the visitor's local timezone.
When is the new moon in December 2121?
The new moon in December 2121 is on December 10, 2121 at 12:47 AM UTC UTC, in Sagittarius. The page also converts that moment into the visitor's local timezone.
How many moon phases are there in December 2121?
There are 5 major lunar phase events in December 2121: Last Quarter, New Moon, First Quarter, Full Moon, Last Quarter.