|Duration (tropical, western)||20 March – 20 April (2015, UTC)|
New millennium astrological chart
Aries (♈) // (meaning "ram") is the first astrological sign in the Zodiac, spanning the first 30 degrees of celestial longitude (0°≤ λ <30º). Under the tropical zodiac, the Sun transits this sign between March 21 and April 19 each year. This time duration is exactly the first month of Solar Hejri calendar (Farvardin). Under the sidereal zodiac, the sun currently transits Aries from 15 April to 15 May (approximately). The symbol of the ram is based on the Chrysomallus, the flying ram that provided the Golden Fleece.
According to the Tropical system of astrology, the Sun enters the sign of Aries when it reaches the northern vernal equinox, which occurs around March 21. Because the Earth takes approximately 365.25 days to go around the Sun, the precise time of the equinox is not the same each year, and generally will occur about 6 hours later each year, with a jump of a day (backwards) on leap years. Since 1900 the vernal equinox date ranged from March 20 at 08h (2000) to April 21 at 19h (1903) (all times UTC).
Individuals born during these dates, depending on which system of astrology they subscribe to, may be called Arians or Ariens.
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
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