No, there are no hidden zodiac signs. The twelve signs of the zodiac — Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces — are well-established and have been used for centuries.
While some people believe in a thirteenth zodiac sign called Ophiuchus, it is not officially recognized in Western astrology. Ophiuchus is a constellation that the Sun passes through for a short period each year, but it has not been integrated into the traditional twelve-sign system.
Many believe that the signs are based on constellations, which is why they are called the zodiac. However, astrology uses the tropical zodiac, which is based on the Sun's position in the sky at the time of a person's birth. This system divides the year into twelve equal segments, each representing a different sign.
Therefore, there are no hidden zodiac signs. The twelve traditional signs are well-established and form the basis of Western astrology.