Aquarius the Water bearer January 21 - February 19 Aquarius (♒) is the eleventh astrological sign in the Zodiac, originating from the constellation Aquarius. In western astrology, the sign is no longer aligned with the constellation as a result of the precession of the equinoxes. In astrology, Aquarius is considered a "masculine", positive (extrovert) sign. It is also considered an air sign and is one of four fixed signs. Aquarius has been traditionally ruled by the planet Saturn, and, since its discovery, Uranus has been considered a modern ruler of this sign. Being the eleventh sign of the zodiac, Aquarius is associated with the astrological eleventh house.