Ophiuchus, known as the Serpent Bearer, is a large constellation positioned between Scorpio and Sagittarius. The Sun actually passes through it every year, which is why some people refer to it as a “13th zodiac sign.” In traditional Western astrology, however, it isn’t included.
What makes Ophiuchus interesting?
- Symbol: a man holding a serpent (the constellation Serpens).
- Solar period: roughly November 29 to December 18.
- Location: above Scorpio and below Hercules in the night sky.
- Mythology: commonly linked to Asclepius, the legendary Greek healer placed among the stars by Zeus.
- Themes: transformation, healing, wisdom, inner work, and breaking old cycles.
Why Ophiuchus isn’t part of the classic zodiac
The explanation is straightforward: Ancient astrologers deliberately built a 12‑sign system to match the 12 months of the year. They were fully aware of Ophiuchus, but chose to leave it out to keep the structure simple and symmetrical.
Western astrology also uses the tropical zodiac, which is tied to the seasons rather than the actual constellations the Sun moves through today. Because of that, the traditional zodiac remains fixed at twelve signs, even though the Sun crosses more constellations astronomically.