|Duration (tropical, western)||March 20 – April 20 (2019, UT1)|
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 <30°). Under the tropical zodiac, the Sun transits this sign from approximately March 20 to April 21 each year. This time duration is exactly the first month of the Solar Hijri calendar (Hamal/Farvardin/Wray). 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 March equinox, which occurs on average on March 21 (by design).[a] Because the Earth takes approximately 365.24 days to go around the Sun, the precise time of the equinox is not the same each year, and generally will occur about six hours later from one year to the next until reset by a leap year. February 29 of a leap year causes that year's vernal equinox to fall about eighteen hours earlier compared with the previous year. From 1800 to 2050 inclusive the vernal equinox date has (or will) range(d) from March 19 at 22:34 UT1 in 2048 to March 21 at 19:15 UT1 in 1903.
Aries is the first fire sign in the zodiac, the other fire signs being Leo and Sagittarius. Individuals born between 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.
- Astronomical Applications Department (2011). Multiyear Computer Interactive Almanac. 2.2.2. Washington DC: US Naval Observatory. For time of Sun's entry or exit from a sign, calculate Longitude of Sun, apparent geocentric ecliptic of date, interpolated to find time of crossing 0°, 30°..... For list of vernal equinox dates calculate phenomena: solstices/equinoxes, choosing UT1 and years 1800 through 2050.
- Atsma, Aaron J. (2015). "Chrysomallus". The Theoi Project: Greek mythology.
- Oxford Dictionaries. n.d. Retrieved December 23, 2018.
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