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Sun, Moon & Rising Sign Calculator

Discover your Big Three — your Sun ☀️, Moon 🌙, and Rising ⬆️ signs — the core of your astrological identity.

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What Are Your Sun, Moon & Rising Signs?

In Western astrology, your birth chart is a snapshot of the sky at the exact moment you were born. Three placements stand above the rest — the "Big Three" — each revealing a different layer of your personality.

Together, your Sun, Moon, and Rising sign form the foundation of your astrological identity. No two combinations are exactly alike, giving every person a unique cosmic fingerprint.

☀️ Sun Sign

Your Sun sign is determined by where the Sun was in the zodiac when you were born. It represents your core identity, ego, and conscious self — who you are at your most essential. It's what most people mean when they say "I'm a Scorpio" or "I'm a Leo."

🌙 Moon Sign

Your Moon sign shows where the Moon was at your birth. It governs your emotional world, instincts, subconscious, and what makes you feel safe and nurtured. The Moon changes signs every ~2.5 days, so birth time improves accuracy significantly.

⬆️ Rising Sign (Ascendant)

Your Rising sign is the zodiac sign that was rising on the eastern horizon at your birth. It's your social mask, first impressions, and how others perceive you. The Rising changes every ~2 hours, so an accurate birth time and location is essential.

Frequently Asked Questions

Your Sun sign only needs your birth date. Your Moon sign benefits from a birth time since the Moon moves quickly (~2.5 days per sign). Your Rising sign requires both birth time and birth location since it changes every ~2 hours.
"Cusps" — days when the Sun moves from one sign to another — vary by year by a day or two. Our calculator uses precise astronomical data so if you're born near a sign boundary, you'll always get the correct sign.
All three are equally important but serve different purposes. The Sun is your core self, the Moon is your emotional inner world, and the Rising is the face you show the world. Together they give a much richer picture than any single sign alone.
The Sun sign is highly accurate (based on well-known astronomical tables). The Moon sign uses a simplified lunar cycle calculation accurate to ±1 sign for most dates; for the closest result, enter your birth time. The Rising sign is an approximation based on birth time and UTC offset.
Your "Big Three" refers to your Sun sign, Moon sign, and Rising (Ascendant) sign. These three placements are considered the most influential in a birth chart and form the foundation of your astrological personality profile.
Absolutely. Two Scorpios with different Moon and Rising signs can be dramatically different people. A Scorpio Sun / Gemini Moon / Libra Rising will express themselves very differently from a Scorpio Sun / Capricorn Moon / Aries Rising. That's what makes the Big Three so powerful.
No. All calculations happen entirely in your browser using JavaScript. Your birth date, time, and location are never sent to any server. Your personal data stays completely private.

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