Moon Sign Calculator
Free moon sign calculator. Find your lunar zodiac sign based on birth date, time, and location. Discover your emotional nature, inner self, and moon phase at birth. Supports Tropical and Sidereal zodiac systems. Works without birth time.
Location is used for timezone correction to calculate the Moon's exact position at your birth.
Tropical zodiac aligned to seasons and equinoxes. Used in Western astrology.
Your Moon Sign
Scorpio
10°34′ Scorpio|Tropical
Scorpio Moon Traits
Emotional nature and instinctive responses
With your Moon in Scorpio, your emotional depth is unmatched. You feel with extraordinary intensity and have a penetrating ability to see beneath surface appearances. Trust is earned slowly, and you guard your inner world carefully. Transformation is a constant theme — you instinctively understand that emotional healing requires going through darkness, not around it.
Moon Phase at Birth
The lunar cycle phase when you were born
Third Quarter
Phase angle: 300.43°
Born under the Third Quarter Moon, you are introspective and revisionary. You question established structures and release what no longer serves your growth.
Moon Sign Compatibility
Elemental harmony with other moon signs
Most Compatible
More Challenging
Compatibility is based on elemental harmony. Same-element and complementary-element moon signs tend to understand each other's emotional needs more naturally.
What Is a Moon Sign?
Your emotional core and inner self in astrology
Your Moon sign represents the zodiac sign the Moon was in at the exact moment of your birth. While your Sun sign reflects your core identity, ego, and conscious self, your Moon sign reveals your emotional nature, instinctive reactions, subconscious patterns, and inner world.
Why the Moon Matters
In astrology, the Moon governs emotions, intuition, memory, habits, and your sense of security. It shows how you nurture others, what you need to feel safe, and how you process feelings. Many astrologers consider the Moon sign equally important to — or even more revealing than — the Sun sign.
The Moon completes its orbit through all 12 zodiac signs approximately every 27.3 days, spending about 2.5 days in each sign. This is why knowing your birth time matters — the Moon can change signs during a single day, and the exact time of birth determines which sign the Moon was in when you were born.
How to Calculate Your Moon Sign
Using astronomical ephemeris data for precision
Calculating your Moon sign requires knowing the Moon's exact ecliptic longitude at the moment of your birth. This calculator uses NASA JPL ephemeris data via the astronomy-engine library for scientifically accurate positions.
- Gather your birth details — date, time (if known), and location
- Enter your birth date — select month, day, and year
- Enter your birth time — or check "I don't know" to see both possible signs
- Select your birth location — for timezone correction
- View your results — Moon sign, degree, traits, phase, and compatibility
Don't Know Your Birth Time?
If you don't know your exact birth time, this calculator checks the Moon's position at the start and end of your birthday. If the Moon changed signs during that day, both possible Moon signs are shown with their descriptions so you can read both and identify which resonates more with your emotional nature.
Moon Sign vs Sun Sign
Understanding the difference between your two key signs
| Aspect | Sun Sign ☉ | Moon Sign ☽ |
|---|---|---|
| Represents | Core identity and ego | Emotional nature and inner world |
| Governs | Willpower, vitality, self-expression | Feelings, instincts, habits |
| Visibility | How others see you publicly | Your private emotional responses |
| Changes Every | ~30 days (one month) | ~2.5 days |
| Birth Time Needed | No (just birth date) | Helpful but not always required |
| Relationships | How you attract partners | What you need emotionally from partners |
Your Sun sign and Moon sign work together. If your Sun sign is your "outward identity," your Moon sign is your "inner emotional truth." Someone with an Aries Sun might appear bold and direct, but an Aries Sun with a Pisces Moon will have a deeply sensitive, empathic inner world that they may not show publicly.
Moon Signs and Their Meanings
A quick overview of all 12 lunar zodiac signs
| Sign | Element | Modality | Emotional Nature |
|---|---|---|---|
| Aries | Fire | Cardinal | Impulsive, courageous, direct |
| Taurus | Earth | Fixed | Steady, loyal, comfort-seeking |
| Gemini | Air | Mutable | Curious, communicative, versatile |
| Cancer | Water | Cardinal | Nurturing, intuitive, protective |
| Leo | Fire | Fixed | Warm, generous, expressive |
| Virgo | Earth | Mutable | Analytical, helpful, detail-oriented |
| Libra | Air | Cardinal | Harmonious, diplomatic, fair |
| Scorpio | Water | Fixed | Intense, perceptive, transformative |
| Sagittarius | Fire | Mutable | Optimistic, adventurous, philosophical |
| Capricorn | Earth | Cardinal | Disciplined, ambitious, reserved |
| Aquarius | Air | Fixed | Independent, humanitarian, unconventional |
| Pisces | Water | Mutable | Empathic, dreamy, spiritually attuned |
Frequently Asked Questions
Common questions about moon signs and how this calculator works