Moon sign, emotions and Moon phases
The Moon sign is the sign the Moon occupied at the exact moment you were born, calculated from the Moon's real ecliptic longitude, and it should not be confused with the Moon phase, which measures the angle between Sun and Moon at that same instant. They are two different calculations on the same celestial body.
In just 48 hours the Moon advanced 24.82°, almost a full sign, crossing the boundary from Scorpio into Sagittarius partway through.
A 0° angle would be a new Moon (0% light), and the engine splits the full cycle into 8 bands of 45° to name the phase, always from that same angular difference.
The speed varies because the Moon's orbit is elliptical, not circular; it speeds up near perigee (the closest point to Earth) and slows down near apogee.
It is the sign the Moon occupied in the sky at the exact moment of your birth. While the sun sign describes conscious identity, the moon sign reveals your emotional, instinctive side: how you feel, what you need to feel safe and how you care for those you love. It is one of the central pieces of the birth chart.
The Moon sign is the Moon's position on the ecliptic, one of 12 signs; the phase is the angular relationship between Sun and Moon, one of 8 stages from new to full. It is possible to be born under a full Moon in any of the 12 signs, they are independent axes.
Because near the boundary between two signs (the Moon changes every 2 to 3 days), small differences in time zone handling or in the ephemeris used between tools can land on either side of the line; away from the boundary, the result is stable.
Yes: at about 13° per day, it changes sign every 2 to 3 days, compared to roughly 30 days for the Sun and over a year for Mars onward; that is why the Moon sign needs a more precise date and time than the Sun sign.
The only measured effect is the satellite's visible illumination that night (close to 100%); associations between behavior or personality and Moon phases are symbolic interpretation, not something the astronomical calculation supports.
The time makes the moon sign exact, the Moon changes sign every 2 to 2.5 days. Without a time we use noon.
Enter your date (and the time, if you know it) to compute your moon sign.
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