The complete calendar of the 13-sign zodiac — including Ophiuchus, the long-forgotten 13th sign. Find your true sign by your birth date.
| Sign | Dates |
|---|---|
♑Capricorn | Jan 20 – Feb 16 |
♒Aquarius | Feb 16 – Mar 11 |
♓Pisces | Mar 11 – Apr 18 |
♈Aries | Apr 18 – May 13 |
♉Taurus | May 13 – Jun 21 |
♊Gemini | Jun 21 – Jul 20 |
♋Cancer | Jul 20 – Aug 10 |
♌Leo | Aug 10 – Sep 16 |
♍Virgo | Sep 16 – Oct 30 |
♎Libra | Oct 30 – Nov 23 |
♏Scorpio | Nov 23 – Nov 29 |
⛎Ophiuchus | Nov 29 – Dec 17 |
♐Sagittarius | Dec 17 – Jan 20 |
The Sun's apparent path across the sky — the ecliptic — actually crosses 13 constellations, not 12. Ophiuchus, the Serpent Bearer, sits between Scorpio and Sagittarius. Astro 13 uses the full 13-sign system so your reading reflects the real geometry of the sky on the day you were born.
Use the table above to map your birth date to your 13-sign zodiac — or generate a complete personalized chart with planets, houses, aspects, MBTI, and numerology on the birth chart page.