Zodiac Sign Calculator
Enter your birth date to find your Western (tropical) zodiac sun sign. Sun signs are determined by the position of the Sun along the ecliptic at the time of birth, divided into 12 equal 30° segments.
Your Sun Sign
Western Zodiac Signs — Dates and Attributes
| Sign | Dates | Element | Ruling Planet | Modality |
|---|---|---|---|---|
| Aries ♈ | Mar 21 – Apr 19 | Fire | Mars | Cardinal |
| Taurus ♉ | Apr 20 – May 20 | Earth | Venus | Fixed |
| Gemini ♊ | May 21 – Jun 20 | Air | Mercury | Mutable |
| Cancer ♋ | Jun 21 – Jul 22 | Water | Moon | Cardinal |
| Leo ♌ | Jul 23 – Aug 22 | Fire | Sun | Fixed |
| Virgo ♍ | Aug 23 – Sep 22 | Earth | Mercury | Mutable |
| Libra ♎ | Sep 23 – Oct 22 | Air | Venus | Cardinal |
| Scorpio ♏ | Oct 23 – Nov 21 | Water | Mars/Pluto | Fixed |
| Sagittarius ♐ | Nov 22 – Dec 21 | Fire | Jupiter | Mutable |
| Capricorn ♑ | Dec 22 – Jan 19 | Earth | Saturn | Cardinal |
| Aquarius ♒ | Jan 20 – Feb 18 | Air | Saturn/Uranus | Fixed |
| Pisces ♓ | Feb 19 – Mar 20 | Water | Jupiter/Neptune | Mutable |
References & Methodology
- Sachs, A. — "Babylonian Horoscopes." Journal of Cuneiform Studies 6(2):49–75, 1952 — Historical origin of the 12-sign zodiac from Babylonian astronomy (circa 5th century BCE); transition to tropical zodiac system.
- Ptolemy, C. — Tetrabiblos (circa 150 CE) — Foundational text of Western astrology codifying the tropical zodiac system, sign attributes, and planetary rulerships still in use today.
- IAU (International Astronomical Union) — Defines the ecliptic coordinate system; the tropical zodiac begins at the vernal equinox (0° Aries = ~March 20–21 annually).