Astrological Moon Sign & Birth Phase Calculator

Estimate a birth Moon phase and astrological Moon sign with a simplified mean-cycle model, then review the traditional interpretation.

Approximation only: this uses a reference new moon and mean lunar longitude, not a full astronomical ephemeris or scientific personality assessment. Results near sign or phase boundaries may differ.

Celestial Birth Summary

SagittariusAstrological Moon Sign
Zodiac ElementFire
Birth Moon PhaseFull Moon (52.5%)

Traditional Interpretation:

Optimistic, freedom-loving, philosophic, emotionally adventurous.

Frequently Asked Questions

What does the Moon Sign represent in astrology?

While your Sun Sign represents your core ego and identity, your Moon Sign represents your inner self, emotions, instincts, and how you react to feelings.

Why do I need my birth time for the Moon Sign?

The Moon moves very quickly, changing zodiac signs every 2 to 2.5 days. If you were born on a transition day, your birth time is critical to determine the correct sign.