What is a 'Moon Sign' in Astrology?

The Moon is in constant motion throughout the Zodiac and takes about 2 1/3 days to move from one sign of the Zodiac to another. In a period of 28 days, it moves through all the 12 signs of the Zodiac, passing through every sign or House. Thus, your Moon Sign may not be the same as your Sun Sign or Zodiac Sign because it may not be in the same Sign as your Sun at the time of birth.

A person's Moon Sign is important to astrologers, because they believe that the Moon Sign represents the inner qualities of a person. Thus, your fears, emotions, intuitions, and vulnerabilities, are all determined by your Moon Sign. It gives an insight into your feelings and thoughts, and things that you feel strongly about, even though you may not be aware of such emotions.

Any astrological report should consider your Moon Sign in addition to your Sun Sign, so as to get the best insight into your personal self.

The Vedic astrology system is based entirely on the Moon sign (Rashi), and gives prime importance to its transit through the sign. Although Sun moves rather predictably (1 degree a day) through the zodiac, the motion of Moon is much faster, that's why it's not possible to mark dates for Moon signs.

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Your Moon Sign is also your emotional you. It is how you deal with emotional experiences.

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It also shows how others view you. It is the sign that the moon was in, e.g. at your birth. It's what you are, on the inside. And sometimes is the sign that someone is trying to overcome. That's especially if a water sign, i.e. Cancer, Scorpio or Pisces.