Aries (♈︎) is the first astrological sign in the zodiac, spanning the first 30 degrees of celestial longitude, and originates from the Aries constellation. Under the tropical zodiac, the Sun transits this sign from approximately March 21 to April 19 each year. This time-duration is exactly the first month of the Solar Hijri calendar.
Aries (astrology)
Mosaic in Maltezana near Analipsi, Astypalaia, 5th century CE
Aries zodiac sign, Jantar Mantar, Jaipur, India, 18th century CE
Aries, or al-ħamal, depicted in the 14th/15th century Arabic astrology text Book of Wonders
In Western astrology, astrological signs are the twelve 30-degree sectors that make up Earth's 360-degree orbit around the Sun. The signs enumerate from the first day of spring, known as the First Point of Aries, which is the vernal equinox. The astrological signs are Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces. The Western zodiac originated in Babylonian astrology, and was later influenced by the Hellenistic culture. Each sign was named after a constellation the sun annually moved through while crossing the sky. This observation is emphasized in the simplified and popular sun sign astrology. Over the centuries, Western astrology's zodiacal divisions have shifted out of alignment with the constellations they were named after by axial precession of the Earth while Hindu astrology measurements correct for this shifting. Astrology was developed in Chinese and Tibetan cultures as well but these astrologies are not based upon the zodiac but deal with the whole sky.
Anatomical Zodiac Man from the Très Riches Heures du Duc de Berry
Representation of the western astrological signs in a 1716 Acta Eruditorum table illustration
Aries at the Wisconsin State Capitol
Taurus at the Wisconsin State Capitol