How to Determine Your Zodiac Sign by Date of Birth

Your zodiac sign is determined by your date of birth; around the cusp dates (roughly once a month) there are “borderline” days when it’s worth double-checking precisely.

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Your zodiac sign is determined by your date of birth—specifically, by which constellation the Sun was in on that day. Here are the periods: Aries 21.03–19.04, Taurus 20.04–20.05, Gemini 21.05–20.06, Cancer 21.06–22.07, Leo 23.07–22.08, Virgo 23.08–22.09, Libra 23.09–22.10, Scorpio 23.10–21.11, Sagittarius 22.11–21.12, Capricorn 22.12–19.01, Aquarius 20.01–18.02, Pisces 19.02–20.03.

If you were born on the cusp of two signs (on the first or last day of a period), these are borderline days: the dates shift slightly from year to year, so it’s better to verify your exact sign based on your year of birth. Sometimes a person goes through life believing they are one sign when, in fact, they are the neighboring one.

Your zodiac sign (sun sign) is only part of the picture; a full portrait comes from your personal chart. If you want to go deeper, build your own Destiny Matrix by date of birth.
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