New Moon
October 3, 2100
06:03 PM UTC UTC in Libra
New Moon in LibraLunation Calendar
Moon Phases October 2100: New Moon, Full Moon & Signs
Moon phases for October 2100 with calculated UTC times and zodiac signs. New Moon: October 3, 2100 at 06:03 PM UTC in Libra. Full Moon: October 18, 2100 at 04:06 AM UTC in Aries. The month view below also tracks Moon sign ingresses and local-time conversions.
Key Dates
New Moon and Full Moon in October 2100
Full Moon
October 18, 2100
04:06 AM UTC UTC in Aries
Full Moon in AriesCalculation 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 October 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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October 2100 lunar calendar
Use this panel to personalize the October 2100 calendar.
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Featured local timings
New Moon in Libra
Oct 3, 2100, 6:03 PM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
First Quarter in Capricorn
Oct 10, 2100, 8:33 AM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
Full Moon in Aries
Oct 18, 2100, 4:06 AM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
Last Quarter in Leo
Oct 26, 2100, 7:19 AM UTC
Canonical dates stay in UTC, but this panel converts them to your browser timezone.
Lunar Phase Events
New Moon
in LibraDateOctober 3, 2100
Time (UTC)06:03 PM UTC
Local: Oct 3, 2100, 6:03 PM UTC
SignLibra
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 LibraFirst Quarter
in CapricornDateOctober 10, 2100
Time (UTC)08:33 AM UTC
Local: Oct 10, 2100, 8:33 AM UTC
SignCapricorn
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 CapricornFull Moon
in AriesDateOctober 18, 2100
Time (UTC)04:06 AM UTC
Local: Oct 18, 2100, 4:06 AM UTC
SignAries
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 AriesLast Quarter
in LeoDateOctober 26, 2100
Time (UTC)07:19 AM UTC
Local: Oct 26, 2100, 7:19 AM UTC
SignLeo
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 LeoDaily Moon Lookup - October 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 |
|---|---|---|---|
| October 1 | Waning Crescent7% illuminated | Virgonoon UTC reference | No major lunation or sign ingress. |
| October 2 | Waning Crescent2% illuminated | Virgonoon UTC reference | No major lunation or sign ingress. |
| October 3 | Waning Crescent0% illuminated | Libranoon UTC reference | |
| October 4 | New Moon1% illuminated | Libranoon UTC reference | No major lunation or sign ingress. |
| October 5 | New Moon5% illuminated | Scorpionoon UTC reference | |
| October 6 | New Moon11% illuminated | Scorpionoon UTC reference | No major lunation or sign ingress. |
| October 7 | Waxing Crescent20% illuminated | Sagittariusnoon UTC reference | |
| October 8 | Waxing Crescent30% illuminated | Sagittariusnoon UTC reference | No major lunation or sign ingress. |
| October 9 | Waxing Crescent41% illuminated | Capricornnoon UTC reference | |
| October 10 | First Quarter52% illuminated | Capricornnoon UTC reference | |
| October 11 | First Quarter62% illuminated | Aquariusnoon UTC reference | |
| October 12 | First Quarter72% illuminated | Aquariusnoon UTC reference | No major lunation or sign ingress. |
| October 13 | First Quarter81% illuminated | Aquariusnoon UTC reference | |
| October 14 | Waxing Gibbous88% illuminated | Piscesnoon UTC reference | No major lunation or sign ingress. |
| October 15 | Waxing Gibbous94% illuminated | Piscesnoon UTC reference | No major lunation or sign ingress. |
| October 16 | Waxing Gibbous97% illuminated | Ariesnoon UTC reference | |
| October 17 | Waxing Gibbous100% illuminated | Ariesnoon UTC reference | No major lunation or sign ingress. |
| October 18 | Full Moon100% illuminated | Ariesnoon UTC reference | |
| October 19 | Full Moon98% illuminated | Taurusnoon UTC reference | No major lunation or sign ingress. |
| October 20 | Full Moon95% illuminated | Taurusnoon UTC reference | No major lunation or sign ingress. |
| October 21 | Full Moon90% illuminated | Gemininoon UTC reference | |
| October 22 | Waning Gibbous84% illuminated | Gemininoon UTC reference | No major lunation or sign ingress. |
| October 23 | Waning Gibbous76% illuminated | Gemininoon UTC reference | |
| October 24 | Waning Gibbous68% illuminated | Cancernoon UTC reference | No major lunation or sign ingress. |
| October 25 | Waning Gibbous58% illuminated | Cancernoon UTC reference | No major lunation or sign ingress. |
| October 26 | Last Quarter48% illuminated | Leonoon UTC reference | |
| October 27 | Last Quarter38% illuminated | Leonoon UTC reference | No major lunation or sign ingress. |
| October 28 | Last Quarter28% illuminated | Virgonoon UTC reference | |
| October 29 | Last Quarter18% illuminated | Virgonoon UTC reference | No major lunation or sign ingress. |
| October 30 | Waning Crescent10% illuminated | Libranoon UTC reference | |
| October 31 | Waning Crescent4% illuminated | Libranoon UTC reference | No major lunation or sign ingress. |
Month View Calendar - October 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
3
18
26
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 October 2100, with local-time conversion shown below each ingress.
October 3, 2100 at 12:55 AM UTC UTC
Local time: Oct 3, 2100, 12:55 AM UTC
The Moon leaves Virgo and enters Libra.
October 5, 2100 at 12:54 AM UTC UTC
Local time: Oct 5, 2100, 12:54 AM UTC
The Moon leaves Libra and enters Scorpio.
October 7, 2100 at 12:53 AM UTC UTC
Local time: Oct 7, 2100, 12:53 AM UTC
The Moon leaves Scorpio and enters Sagittarius.
October 9, 2100 at 02:43 AM UTC UTC
Local time: Oct 9, 2100, 2:43 AM UTC
The Moon leaves Sagittarius and enters Capricorn.
October 11, 2100 at 07:38 AM UTC UTC
Local time: Oct 11, 2100, 7:38 AM UTC
The Moon leaves Capricorn and enters Aquarius.
October 13, 2100 at 03:46 PM UTC UTC
Local time: Oct 13, 2100, 3:46 PM UTC
The Moon leaves Aquarius and enters Pisces.
October 16, 2100 at 02:22 AM UTC UTC
Local time: Oct 16, 2100, 2:22 AM UTC
The Moon leaves Pisces and enters Aries.
October 18, 2100 at 02:25 PM UTC UTC
Local time: Oct 18, 2100, 2:25 PM UTC
The Moon leaves Aries and enters Taurus.
October 21, 2100 at 03:05 AM UTC UTC
Local time: Oct 21, 2100, 3:05 AM UTC
The Moon leaves Taurus and enters Gemini.
October 23, 2100 at 03:20 PM UTC UTC
Local time: Oct 23, 2100, 3:20 PM UTC
The Moon leaves Gemini and enters Cancer.
October 26, 2100 at 01:43 AM UTC UTC
Local time: Oct 26, 2100, 1:43 AM UTC
The Moon leaves Cancer and enters Leo.
October 28, 2100 at 08:43 AM UTC UTC
Local time: Oct 28, 2100, 8:43 AM UTC
The Moon leaves Leo and enters Virgo.
October 30, 2100 at 11:48 AM UTC UTC
Local time: Oct 30, 2100, 11:48 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 October 2100 moon calendar
Open the cited books and chapters behind the monthly lunation calendar.
Moon Phases October 2100 - FAQ
When is the full moon in October 2100?
The full moon in October 2100 is on October 18, 2100 at 04:06 AM UTC UTC, in Aries. The page also converts that moment into the visitor's local timezone.
When is the new moon in October 2100?
The new moon in October 2100 is on October 3, 2100 at 06:03 PM UTC UTC, in Libra. The page also converts that moment into the visitor's local timezone.
How many moon phases are there in October 2100?
There are 4 major lunar phase events in October 2100: New Moon, First Quarter, Full Moon, Last Quarter.