Your Moon sign is basically what Zodiac sign the Moon was under the influence of, at your precise time of birth. The Moon, as with the other planets move around the Zodiac in the Solar System. It is under the influence of a Zodiac sign for roughly 2.5 days before moving into another sign.
What Does This Show Me?
Well, the Moon is linked to the emotions, mother or mother figure and is said to be a feminine energy. In addition to this, it shows you (the Zodiac placement of it) how you deal with things emotionally in life, your approach based on the Zodiac sign’s traits. For example, a Pisces Moon placement could indicate a very emotional person, emotions can be up and down flowing like the water sign that Pisces is. In a nutshell knowing your Moon sign can help you to understand why you deal with things on an emotional level the way you do.
How or Where Can I Find Out My Moon Sign?
A birth chart will show and tell you all you need to know! Read up about that here. The Ascendant sign is also just as key to understanding you. You can learn about the meaning of the Ascendant sign here.