Lilith Sign Calculator
The Lilith Sign Calculator estimates the zodiac sign and longitudinal position of the Mean Black Moon Lilith based on your birth date, time, and timezone. This calculator is designed to help astrology enthusiasts explore this significant point in their natal chart. Whether you're analyzing your shadow self, understanding emotional patterns, or completing a comprehensive chart reading, this tool provides the astronomical position of Lilith.
This calculator is for informational and educational purposes only. Astrological interpretations are subjective and should not be used as a substitute for professional advice. Consult qualified professionals for important life decisions.
How This Calculator Works
- Enter your birth date including year, month, and day in the provided fields.
- Input your exact birth time (hour and minute) for more precise calculations.
- Select your timezone offset from the dropdown menu to convert to Universal Time.
- Click "Calculate Lilith Sign" to compute the Mean Black Moon Lilith position.
- View your Lilith longitude in degrees and the corresponding zodiac sign.
How Lilith Position Is Calculated
The Mean Black Moon Lilith represents the average position of the Moon's apogee—the point where the Moon is farthest from Earth in its orbit. This astronomical calculation converts your birth date and time to Universal Time, then determines the Julian Day for uniform astronomical timekeeping.
Julian Day Calculation
JD = 367Y - INT(7(Y + INT((M+9)/12))/4) + INT(275M/9) + D + 1721013.5 + Time/24
Lilith Longitude Formula
L = (123.27° + T × (-4068.35°)) mod 360
Where:
- Y = Year, M = Month, D = Day
- T = Julian Centuries from J2000.0 epoch
- 123.27° = Mean longitude at epoch J2000.0
- -4068.35° = Mean motion per Julian century
The calculation first determines Julian Centuries (T) from the J2000.0 epoch, then applies the mean motion rate to find Lilith's position. The result is normalized to 0-360 degrees and mapped to the corresponding zodiac sign based on 30-degree segments.
This method uses established astronomical algorithms for the Moon's mean apogee position, providing an approximation suitable for astrological analysis.
What Your Lilith Sign Means
In astrology, Black Moon Lilith represents the shadow self, hidden desires, and areas where one may experience power struggles or repressed emotions. Your Lilith sign indicates the zodiac energy through which these themes may manifest in your life.
| Sign | Degree Range | Themes |
|---|---|---|
| Aries | 0° - 29.99° | Independence, assertion, identity |
| Taurus | 30° - 59.99° | Security, sensuality, values |
| Gemini | 60° - 89.99° | Communication, curiosity, duality |
| Cancer | 90° - 119.99° | Emotions, nurturing, home |
| Leo | 120° - 149.99° | Creativity, self-expression, pride |
| Virgo | 150° - 179.99° | Service, perfectionism, analysis |
| Libra | 180° - 209.99° | Relationships, balance, justice |
| Scorpio | 210° - 239.99° | Transformation, intensity, secrets |
| Sagittarius | 240° - 269.99° | Freedom, beliefs, expansion |
| Capricorn | 270° - 299.99° | Ambition, authority, structure |
| Aquarius | 300° - 329.99° | Individuality, innovation, community |
| Pisces | 330° - 359.99° | Spirituality, dreams, compassion |
The specific degree within your sign provides additional nuance—earlier degrees (0-10°) may indicate more conscious expression, while later degrees (20-30°) might suggest themes that emerge through life experience.
Working with Your Lilith Placement
Many astrologers suggest that understanding Lilith's placement may help identify areas for personal growth and integration. The house placement in your natal chart adds another layer of meaning, showing life areas where Lilith themes may be most prominent.
For a complete astrological analysis, consider how your Lilith sign interacts with other chart placements, particularly the Moon, Venus, and Pluto, which often connect to similar themes in the natal chart.
References
- Meeus, Jean. Astronomical Algorithms, 2nd Edition. Willmann-Bell, 1998.
- NASA Jet Propulsion Laboratory. Solar System Dynamics. JPL/NASA.
- Astrologische Deutungen. Lilith: The Dark Moon in Astrology. AstroDataBank.
- International Astronomical Union. Standards of Fundamental Astronomy (SOFA).
Calculation logic verified using publicly available standards.
View our Accuracy & Reliability Framework →