New Moon
May 21, 2031
07:17 AM UTC UTC in Gemini
New Moon in GeminiLunation Calendar
Moon Phases May 2031: New Moon, Full Moon & Signs
Moon phases for May 2031 with calculated UTC times and zodiac signs. New Moon: May 21, 2031 at 07:17 AM UTC in Gemini. Full Moon: May 7, 2031 at 03:40 AM UTC in Scorpio. The month view below also tracks Moon sign ingresses and local-time conversions.
Key Dates
New Moon and Full Moon in May 2031
Full Moon
May 7, 2031
03:40 AM UTC UTC in Scorpio
Full Moon in ScorpioCalculation 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 May 2031 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.
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Current moon
May 2031 lunar calendar
Use this panel to personalize the May 2031 calendar.
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Featured local timings
Full Moon in Scorpio
May 7, 2031, 3:40 AM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
Last Quarter in Aquarius
May 13, 2031, 7:07 PM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
New Moon in Gemini
May 21, 2031, 7:17 AM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
First Quarter in Virgo
May 29, 2031, 11:20 AM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
Lunar Phase Events
Full Moon
in ScorpioDateMay 7, 2031
Time (UTC)03:40 AM UTC
Local: May 7, 2031, 3:40 AM UTC
SignScorpio
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 ScorpioLast Quarter
in AquariusDateMay 13, 2031
Time (UTC)07:07 PM UTC
Local: May 13, 2031, 7:07 PM UTC
SignAquarius
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 AquariusNew Moon
in GeminiDateMay 21, 2031
Time (UTC)07:17 AM UTC
Local: May 21, 2031, 7:17 AM UTC
SignGemini
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 GeminiFirst Quarter
in VirgoDateMay 29, 2031
Time (UTC)11:20 AM UTC
Local: May 29, 2031, 11:20 AM UTC
SignVirgo
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 VirgoDaily Moon Lookup - May 2031
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 |
|---|---|---|---|
| May 1 | First Quarter66% illuminated | Virgonoon UTC reference | |
| May 2 | First Quarter76% illuminated | Virgonoon UTC reference | No major lunation or sign ingress. |
| May 3 | First Quarter84% illuminated | Virgonoon UTC reference | |
| May 4 | Waxing Gibbous91% illuminated | Libranoon UTC reference | No major lunation or sign ingress. |
| May 5 | Waxing Gibbous96% illuminated | Libranoon UTC reference | No major lunation or sign ingress. |
| May 6 | Waxing Gibbous99% illuminated | Scorpionoon UTC reference | |
| May 7 | Full Moon100% illuminated | Scorpionoon UTC reference | |
| May 8 | Full Moon97% illuminated | Sagittariusnoon UTC reference | |
| May 9 | Full Moon92% illuminated | Sagittariusnoon UTC reference | No major lunation or sign ingress. |
| May 10 | Waning Gibbous85% illuminated | Capricornnoon UTC reference | |
| May 11 | Waning Gibbous75% illuminated | Capricornnoon UTC reference | No major lunation or sign ingress. |
| May 12 | Waning Gibbous65% illuminated | Aquariusnoon UTC reference | |
| May 13 | Waning Gibbous53% illuminated | Aquariusnoon UTC reference | |
| May 14 | Last Quarter42% illuminated | Piscesnoon UTC reference | |
| May 15 | Last Quarter32% illuminated | Piscesnoon UTC reference | No major lunation or sign ingress. |
| May 16 | Last Quarter22% illuminated | Piscesnoon UTC reference | |
| May 17 | Waning Crescent14% illuminated | Ariesnoon UTC reference | No major lunation or sign ingress. |
| May 18 | Waning Crescent8% illuminated | Ariesnoon UTC reference | |
| May 19 | Waning Crescent3% illuminated | Taurusnoon UTC reference | No major lunation or sign ingress. |
| May 20 | Waning Crescent1% illuminated | Taurusnoon UTC reference | No major lunation or sign ingress. |
| May 21 | New Moon0% illuminated | Gemininoon UTC reference | |
| May 22 | New Moon1% illuminated | Gemininoon UTC reference | No major lunation or sign ingress. |
| May 23 | New Moon4% illuminated | Gemininoon UTC reference | |
| May 24 | New Moon9% illuminated | Cancernoon UTC reference | No major lunation or sign ingress. |
| May 25 | Waxing Crescent15% illuminated | Cancernoon UTC reference | No major lunation or sign ingress. |
| May 26 | Waxing Crescent23% illuminated | Leonoon UTC reference | |
| May 27 | Waxing Crescent31% illuminated | Leonoon UTC reference | No major lunation or sign ingress. |
| May 28 | Waxing Crescent40% illuminated | Leonoon UTC reference | |
| May 29 | First Quarter50% illuminated | Virgonoon UTC reference | |
| May 30 | First Quarter60% illuminated | Virgonoon UTC reference | No major lunation or sign ingress. |
| May 31 | First Quarter70% illuminated | Libranoon UTC reference |
Month View Calendar - May 2031
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
21
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 May 2031, with local-time conversion shown below each ingress.
May 1, 2031 at 11:55 AM UTC UTC
Local time: May 1, 2031, 11:55 AM UTC
The Moon leaves Leo and enters Virgo.
May 3, 2031 at 07:48 PM UTC UTC
Local time: May 3, 2031, 7:48 PM UTC
The Moon leaves Virgo and enters Libra.
May 6, 2031 at 12:10 AM UTC UTC
Local time: May 6, 2031, 12:10 AM UTC
The Moon leaves Libra and enters Scorpio.
May 8, 2031 at 02:01 AM UTC UTC
Local time: May 8, 2031, 2:01 AM UTC
The Moon leaves Scorpio and enters Sagittarius.
May 10, 2031 at 02:55 AM UTC UTC
Local time: May 10, 2031, 2:55 AM UTC
The Moon leaves Sagittarius and enters Capricorn.
May 12, 2031 at 04:23 AM UTC UTC
Local time: May 12, 2031, 4:23 AM UTC
The Moon leaves Capricorn and enters Aquarius.
May 14, 2031 at 07:31 AM UTC UTC
Local time: May 14, 2031, 7:31 AM UTC
The Moon leaves Aquarius and enters Pisces.
May 16, 2031 at 12:59 PM UTC UTC
Local time: May 16, 2031, 12:59 PM UTC
The Moon leaves Pisces and enters Aries.
May 18, 2031 at 08:55 PM UTC UTC
Local time: May 18, 2031, 8:55 PM UTC
The Moon leaves Aries and enters Taurus.
May 21, 2031 at 07:08 AM UTC UTC
Local time: May 21, 2031, 7:08 AM UTC
The Moon leaves Taurus and enters Gemini.
May 23, 2031 at 07:10 PM UTC UTC
Local time: May 23, 2031, 7:10 PM UTC
The Moon leaves Gemini and enters Cancer.
May 26, 2031 at 08:00 AM UTC UTC
Local time: May 26, 2031, 8:00 AM UTC
The Moon leaves Cancer and enters Leo.
May 28, 2031 at 07:54 PM UTC UTC
Local time: May 28, 2031, 7:54 PM UTC
The Moon leaves Leo and enters Virgo.
May 31, 2031 at 05:01 AM UTC UTC
Local time: May 31, 2031, 5:01 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 May 2031 moon calendar
Open the cited books and chapters behind the monthly lunation calendar.
Moon Phases May 2031 - FAQ
When is the full moon in May 2031?
The full moon in May 2031 is on May 7, 2031 at 03:40 AM UTC UTC, in Scorpio. The page also converts that moment into the visitor's local timezone.
When is the new moon in May 2031?
The new moon in May 2031 is on May 21, 2031 at 07:17 AM UTC UTC, in Gemini. The page also converts that moment into the visitor's local timezone.
How many moon phases are there in May 2031?
There are 4 major lunar phase events in May 2031: Full Moon, Last Quarter, New Moon, First Quarter.