Moon Sign Calculator

Your Moon Sign is the zodiac sign the Moon was passing through at the exact moment of your birth. In astrology, it governs your emotional nature, subconscious reactions, and instinctive behaviors—unlike the Sun sign that represents your core identity.

The Sun sign changes once a month and is determined solely by the birth date. The Moon moves much faster (about 12–13° per day), so it can change signs within 2.5 days. An accurate birth time is essential for pinpointing your exact Moon sign.

Yes, for optimal accuracy. The Moon moves roughly 0.5° per hour, so a few hours can shift the sign when you’re near a cusp. If you only know an approximate time (e.g., "morning"), use 12:00 PM as default, and the tool will still give a reliable estimate, but the sign might be adjacent if close to a boundary.

The tool uses a well‑established low‑precision formula from astronomical algorithms with an accuracy of about ±0.3° (better than needed for zodiac boundaries). Provided you enter the correct UTC offset and birth time, the result will be correct for all practical astrological purposes.

Astrological calculations are always performed in Universal Time (UTC). The local birth time must be converted using the time zone offset. For instance, if you were born in New York (UTC‑5 in winter) at 8 AM, the UTC time is 1 PM. Selecting the correct offset ensures the Moon’s position is computed for the right moment.

• Aries ♈ – impulsive, passionate, quick to react.
• Taurus ♉ – grounded, comfort‑seeking, stable emotions.
• Gemini ♊ – curious, communicative, changeable moods.
• Cancer ♋ – nurturing, sensitive, deeply intuitive.
• Leo ♌ – dramatic, warm‑hearted, needs appreciation.
• Virgo ♍ – analytical, service‑oriented, loves order.
• Libra ♎ – harmony‑seeking, sociable, indecisive.
• Scorpio ♏ – intense, transformative, deeply emotional.
• Sagittarius ♐ – adventurous, optimistic, freedom‑loving.
• Capricorn ♑ – disciplined, reserved, goal‑oriented.
• Aquarius ♒ – unconventional, intellectual, detached.
• Pisces ♓ – compassionate, dreamy, empathetic.

If the Moon is within 1° of a sign boundary, the tool alerts you. Even small time inaccuracies or rounding can flip the result. If you see a cusp warning, try adjusting the birth time by a few minutes and re‑calculate to be certain. In astrological interpretation, some people even blend traits of both signs.