Last updated: April 19, 2026
Lilith Sign Calculator
Find your Black Moon Lilith sign, house, and degree in seconds. Compare all five Lilith variants in one place.
What is Black Moon Lilith?
Black Moon Lilith is not a planet. It is a mathematical point: the empty focus of the Moon’s elliptical orbit around Earth, also called the lunar apogee. The Moon reaches its farthest distance from Earth when it passes this point, and astrologers read its ecliptic longitude as a sign and house placement in the same way they would read a planet.
The interpretive tradition comes from the Lilith myth in three layers: the Sumerian lilitu, the rabbinic Lilith (Adam’s first wife, expelled for refusing submission), and the folk Lilith. Every layer points to the same thing: a feminine force that will not be domesticated.[1] In a chart, Lilith marks the part of yourself that refuses to perform, the exiled desire, the anger under the polite answer. For the full breakdown, read the complete Black Moon Lilith guide.
Which Lilith is this? Variant reference
Mean and Sidereal are computed here. The reference table keeps True, Waldemath, and Asteroid 1181 visible so you can tell which Lilith you are reading about. Full write-up on the guide.
| Variant | What it is | Used by | In this tool |
|---|---|---|---|
| Mean Black Moon Lilith | The averaged lunar apogee. The default position on most calculators. | The majority of contemporary Western astrologers. Archetypal, mythological, and Jungian schools. | Live |
| Sidereal Black Moon Lilith | Mean Lilith measured against the fixed stars (Lahiri ayanamsa). | Vedic-influenced practitioners, sidereal Western astrologers. | Live |
| True (Osculating) Black Moon Lilith | The instantaneous apogee, which oscillates around the Mean by up to 30°. | Traditionalists and orbital realists who want the instantaneous geometry rather than the averaged one. | Soon |
| Waldemath Dark Moon Lilith | The 1898 hypothesized second ghost moon, sometimes called Dark Moon Lilith. | Practitioners working from the Goldstein-Jacobson lineage; some British traditional astrologers. | Soon |
| Asteroid Lilith (1181) | The actual asteroid 1181 Lilith, discovered in 1927. | Asteroid astrologers; George and Lang-Wescott schools. | Soon |
Lilith in the Signs
Explore how Lilith’s refusal expresses through each zodiac sign.
Lilith in the Houses
Each house locates where in life the refusal plays out.
Sources & References
- Demetra George, Mysteries of the Dark Moon: The Healing Power of the Dark Goddess. HarperOne, 1992. Foundational text for the contemporary astrological reading of Lilith as the exiled feminine.
- Ariel Guttman and Kenneth Johnson, Mythic Astrology: Archetypal Powers in the Horoscope. Llewellyn, 1993. Cross-reference for the Lilith archetype in natal practice.
- Melanie Reinhart, Saturn, Chiron and the Centaurs: To the Edge and Beyond. CPA Press, 2011. Reference for the relationship between Lilith and the outer-planet wound material.
- Sepharial (Walter Gorn Old), The Science of Foreknowledge. 1918. First introduction of the lunar-apogee Lilith into Western astrology.
More Free Tools
Part of Fortune Calculator
Calculate your Part of Fortune (Lot of Fortune) to find where luck, material well-being, and bodily circumstances play out in your chart.
Lot of Eros Calculator
Calculate your Lot of Eros to discover where desire, love, and creative passion play out in your chart.
Asteroid Calculator
Calculate all your major asteroid signs: Vesta, Pallas, Juno, Ceres, Eros, Psyche, Aphrodite, Apollo and more. Positions for 12 named asteroids from NASA JPL orbital data.
Frequently Asked Questions
What is Black Moon Lilith?
Black Moon Lilith is the empty focus of the Moon's elliptical orbit around Earth, also called the lunar apogee. It is a mathematical point rather than a physical body. In astrology, it marks where you instinctively refuse to comply, exiled desire, and the parts of yourself that will not be domesticated.
What is the difference between Mean and True Lilith?
Mean Lilith is the averaged position of the lunar apogee, smoothed over its natural wobble. True (or Osculating) Lilith is the instantaneous apogee at the exact moment of birth, before any averaging. Because the lunar orbit is perturbed by the Sun, True Lilith can differ from Mean by up to 30° in either direction. Most contemporary astrologers work with Mean; traditionalists who want the literal orbital geometry use True.
Why do I see different Lilith signs on different sites?
Different calculators use different Lilith variants without always telling you. Cafe Astrology uses Mean Lilith by default. Astro-Seek lets you pick. Some Vedic tools default to Sidereal Lilith, which shifts the position by roughly 24° (one sign earlier) in 2026. If two calculators show different signs, check which variant each one used; that is almost always the explanation.
Is Lilith a planet?
Black Moon Lilith is not a planet. It is a geometric point, the apogee of the Moon's orbit. There is also Asteroid Lilith (1181), which is a real asteroid in the main belt but is a different body with a different interpretive tradition. When someone says 'Lilith' without specifying, they usually mean Black Moon Lilith.
Do I need my birth time to calculate my Lilith sign?
For the sign alone, no. Lilith moves slowly enough (about 40° per year) that your birth date is usually enough to place it in a sign unless you were born on a day it changed signs. For the house, yes: Lilith's house depends on your Ascendant, which requires an exact birth time and birth location.
What does Lilith mean in astrology?
Lilith represents the part of the self that refuses containment. Drawing on the Sumerian lilitu, the rabbinic myth of Adam's expelled first wife, and the folk succubus, the astrological Lilith marks exiled desire, autonomy, and the rage under the polite answer. In a chart, Lilith by sign describes the style of refusal and by house describes the life area where it plays out.
Who introduced Lilith into astrology?
The English astrologer Sepharial introduced the lunar apogee reading in his 1918 book The Science of Foreknowledge. Ivy Goldstein-Jacobson expanded its use mid-twentieth century. Demetra George's 1992 Mysteries of the Dark Moon brought Lilith into contemporary archetypal astrology. Melanie Reinhart and Ariel Guttman wrote influential references in the 2000s.
How often does Lilith change signs?
Mean Black Moon Lilith moves prograde at about 40.7° per year, spending roughly nine months in each zodiac sign and completing a full circuit in 8.85 years. True Lilith moves more erratically because of lunar perturbations and can briefly retrograde.
Does Lilith retrograde?
Mean Lilith does not retrograde; it moves uniformly forward. True (Osculating) Lilith can apparently retrograde for short periods because it tracks the actual perturbed orbit. Asteroid Lilith (1181) retrogrades like other asteroids.
What about Lilith in synastry?
Lilith contacts between two charts are often intense and slow to resolve. Lilith conjunct a partner's Venus, Mars, or Moon by tight orb frequently produces a relationship that feels taboo or magnetic in ways neither person can fully articulate. A dedicated Lilith synastry view is planned as a separate tool; for now, compute each partner's Lilith individually and compare the signs and houses.
Methodology: Mean Black Moon Lilith is computed from the lunar perigee polynomial in Jean Meeus, Astronomical Algorithms (Eq. 45.7), offset by 180° to produce the lunar apogee. The sidereal variant subtracts the Lahiri ayanamsa at the birth instant from the tropical longitude. House placement uses Placidus cusps returned by the natal endpoint. True, Waldemath, and Asteroid 1181 variants are not yet computed; the UI exposes them as toggles for parity with the full tradition, and they will light up in a subsequent release.
Lilith is loudest at the threshold. Replay shows when.
Your Black Moon Lilith marks where the refusal lives in your chart. Replay maps when that theme has peaked across your life and where similar patterns are building next.