New Moon
May 9, 2100
08:54 AM UTC UTC in Taurus
New Moon in TaurusLunation Calendar
Moon Phases May 2100: New Moon, Full Moon & Signs
Moon phases for May 2100 with calculated UTC times and zodiac signs. New Moon: May 9, 2100 at 08:54 AM UTC in Taurus. Full Moon: May 23, 2100 at 05:25 PM UTC in Sagittarius. The month view below also tracks Moon sign ingresses and local-time conversions.
Key Dates
New Moon and Full Moon in May 2100
Full Moon
May 23, 2100
05:25 PM UTC UTC in Sagittarius
Full Moon in SagittariusCalculation 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 2100 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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May 2100 lunar calendar
Use this panel to personalize the May 2100 calendar.
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Featured local timings
Last Quarter in Aquarius
May 1, 2100, 5:01 AM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
New Moon in Taurus
May 9, 2100, 8:54 AM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
First Quarter in Leo
May 17, 2100, 2:42 AM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
Full Moon in Sagittarius
May 23, 2100, 5:25 PM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
Lunar Phase Events
Last Quarter
in AquariusDateMay 1, 2100
Time (UTC)05:01 AM UTC
Local: May 1, 2100, 5:01 AM 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 TaurusDateMay 9, 2100
Time (UTC)08:54 AM UTC
Local: May 9, 2100, 8:54 AM UTC
SignTaurus
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 TaurusFirst Quarter
in LeoDateMay 17, 2100
Time (UTC)02:42 AM UTC
Local: May 17, 2100, 2:42 AM UTC
SignLeo
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 LeoFull Moon
in SagittariusDateMay 23, 2100
Time (UTC)05:25 PM UTC
Local: May 23, 2100, 5:25 PM UTC
SignSagittarius
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 SagittariusLast Quarter
in PiscesDateMay 30, 2100
Time (UTC)07:35 PM UTC
Local: May 30, 2100, 7:35 PM UTC
SignPisces
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 PiscesDaily Moon Lookup - May 2100
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 | Last Quarter47% illuminated | Aquariusnoon UTC reference | |
| May 2 | Last Quarter37% illuminated | Aquariusnoon UTC reference | |
| May 3 | Last Quarter28% illuminated | Piscesnoon UTC reference | No major lunation or sign ingress. |
| May 4 | Last Quarter20% illuminated | Piscesnoon UTC reference | No major lunation or sign ingress. |
| May 5 | Waning Crescent13% illuminated | Ariesnoon UTC reference | |
| May 6 | Waning Crescent7% illuminated | Ariesnoon UTC reference | No major lunation or sign ingress. |
| May 7 | Waning Crescent3% illuminated | Ariesnoon UTC reference | |
| May 8 | Waning Crescent1% illuminated | Taurusnoon UTC reference | No major lunation or sign ingress. |
| May 9 | New Moon0% illuminated | Taurusnoon UTC reference | |
| May 10 | New Moon1% illuminated | Gemininoon UTC reference | |
| May 11 | New Moon4% illuminated | Gemininoon UTC reference | No major lunation or sign ingress. |
| May 12 | New Moon9% illuminated | Gemininoon UTC reference | |
| May 13 | Waxing Crescent16% illuminated | Cancernoon UTC reference | No major lunation or sign ingress. |
| May 14 | Waxing Crescent24% illuminated | Cancernoon UTC reference | No major lunation or sign ingress. |
| May 15 | Waxing Crescent33% illuminated | Leonoon UTC reference | |
| May 16 | Waxing Crescent43% illuminated | Leonoon UTC reference | No major lunation or sign ingress. |
| May 17 | First Quarter54% illuminated | Virgonoon UTC reference | |
| May 18 | First Quarter65% illuminated | Virgonoon UTC reference | No major lunation or sign ingress. |
| May 19 | First Quarter76% illuminated | Virgonoon UTC reference | |
| May 20 | First Quarter85% illuminated | Libranoon UTC reference | No major lunation or sign ingress. |
| May 21 | Waxing Gibbous93% illuminated | Libranoon UTC reference | |
| May 22 | Waxing Gibbous98% illuminated | Scorpionoon UTC reference | No major lunation or sign ingress. |
| May 23 | Waxing Gibbous100% illuminated | Scorpionoon UTC reference | |
| May 24 | Full Moon99% illuminated | Sagittariusnoon UTC reference | No major lunation or sign ingress. |
| May 25 | Full Moon95% illuminated | Sagittariusnoon UTC reference | |
| May 26 | Full Moon89% illuminated | Capricornnoon UTC reference | No major lunation or sign ingress. |
| May 27 | Waning Gibbous82% illuminated | Capricornnoon UTC reference | |
| May 28 | Waning Gibbous73% illuminated | Aquariusnoon UTC reference | No major lunation or sign ingress. |
| May 29 | Waning Gibbous63% illuminated | Aquariusnoon UTC reference | No major lunation or sign ingress. |
| May 30 | Waning Gibbous53% illuminated | Piscesnoon UTC reference | |
| May 31 | Last Quarter43% illuminated | Piscesnoon UTC reference | No major lunation or sign ingress. |
Month View Calendar - May 2100
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
17
23
30
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 2100, with local-time conversion shown below each ingress.
May 2, 2100 at 05:45 PM UTC UTC
Local time: May 2, 2100, 5:45 PM UTC
The Moon leaves Aquarius and enters Pisces.
May 5, 2100 at 05:50 AM UTC UTC
Local time: May 5, 2100, 5:50 AM UTC
The Moon leaves Pisces and enters Aries.
May 7, 2100 at 06:49 PM UTC UTC
Local time: May 7, 2100, 6:49 PM UTC
The Moon leaves Aries and enters Taurus.
May 10, 2100 at 07:09 AM UTC UTC
Local time: May 10, 2100, 7:09 AM UTC
The Moon leaves Taurus and enters Gemini.
May 12, 2100 at 06:00 PM UTC UTC
Local time: May 12, 2100, 6:00 PM UTC
The Moon leaves Gemini and enters Cancer.
May 15, 2100 at 02:53 AM UTC UTC
Local time: May 15, 2100, 2:53 AM UTC
The Moon leaves Cancer and enters Leo.
May 17, 2100 at 09:10 AM UTC UTC
Local time: May 17, 2100, 9:10 AM UTC
The Moon leaves Leo and enters Virgo.
May 19, 2100 at 12:31 PM UTC UTC
Local time: May 19, 2100, 12:31 PM UTC
The Moon leaves Virgo and enters Libra.
May 21, 2100 at 01:21 PM UTC UTC
Local time: May 21, 2100, 1:21 PM UTC
The Moon leaves Libra and enters Scorpio.
May 23, 2100 at 01:06 PM UTC UTC
Local time: May 23, 2100, 1:06 PM UTC
The Moon leaves Scorpio and enters Sagittarius.
May 25, 2100 at 01:45 PM UTC UTC
Local time: May 25, 2100, 1:45 PM UTC
The Moon leaves Sagittarius and enters Capricorn.
May 27, 2100 at 05:21 PM UTC UTC
Local time: May 27, 2100, 5:21 PM UTC
The Moon leaves Capricorn and enters Aquarius.
May 30, 2100 at 01:04 AM UTC UTC
Local time: May 30, 2100, 1:04 AM UTC
The Moon leaves Aquarius and enters Pisces.
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 2100 moon calendar
Open the cited books and chapters behind the monthly lunation calendar.
Moon Phases May 2100 - FAQ
When is the full moon in May 2100?
The full moon in May 2100 is on May 23, 2100 at 05:25 PM UTC UTC, in Sagittarius. The page also converts that moment into the visitor's local timezone.
When is the new moon in May 2100?
The new moon in May 2100 is on May 9, 2100 at 08:54 AM UTC UTC, in Taurus. The page also converts that moment into the visitor's local timezone.
How many moon phases are there in May 2100?
There are 5 major lunar phase events in May 2100: Last Quarter, New Moon, First Quarter, Full Moon, Last Quarter.