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  2. March equinox - Wikipedia

    en.wikipedia.org/wiki/March_equinox

    The March equinox is known as the vernal equinox (or spring equinox) in the Northern Hemisphere and as the autumnal equinox (or fall equinox) in the Southern Hemisphere. [8] [7] [10] On the Gregorian calendar at 0° longitude, the northward equinox can occur as early as 19 March (which happened most recently in 1796, and will happen next in ...

  3. Astrological age - Wikipedia

    en.wikipedia.org/wiki/Astrological_age

    In the astrological age that preceded the time of Hipparchus, the vernal equinox had taken place when the Sun was in the constellation of Taurus, and during that previous epoch the constellations of Canis Minor (The Dog), Hydra (The Snake), Corvus (The Raven), and Scorpius (The Scorpion) – that is, the constellations that correspond to the ...

  4. First point of Aries - Wikipedia

    en.wikipedia.org/wiki/First_point_of_Aries

    The time also corresponds to the time of castration of male calves, mules and donkeys, Sanguia on the vernal equinox and marked the start of spring proper. [ 3 ] [ 4 ] The first point of Aries is so called because, when Hipparchus defined it in 130 BCE, it was located in the western extreme of the constellation of Aries, near its border with ...

  5. Here's How Easter Sunday Is Determined Every Year - AOL

    www.aol.com/heres-easter-sunday-determined-every...

    In 2023, the vernal equinox falls on March 20, 2023, making the first full moon after that date April 6 and the following Sunday—April 9—Easter 2023. dtimiraos - Getty Images Easter Sunday ...

  6. When is the spring equinox? Here’s how much sunlight ... - AOL

    www.aol.com/spring-equinox-much-sunlight...

    Every day leading up to the spring equinox, California will gain roughly two minutes of additional sunlight, according to Time and Date, an online global watch. On Wednesday, the sun will set at 5 ...

  7. Your Horoscope for the Spring Equinox Is Here - AOL

    www.aol.com/lifestyle/horoscope-spring-equinox...

    The Spring Equinox 2023 occurs on March 20. Learn about the meaning of this event in astrology and read your horoscope by zodiac sign.

  8. Sidereal time - Wikipedia

    en.wikipedia.org/wiki/Sidereal_time

    More exactly, sidereal time is the angle, measured along the celestial equator, from the observer's meridian to the great circle that passes through the March equinox (the northern hemisphere's vernal equinox) and both celestial poles, and is usually expressed in hours, minutes, and seconds.

  9. Equatorial coordinate system - Wikipedia

    en.wikipedia.org/wiki/Equatorial_coordinate_system

    The primary direction (the x axis) toward the March equinox. A right-handed convention, specifying a y axis 90° to the east in the fundamental plane and a z axis along Earth's north polar axis. This frame is similar to the ξ, η, ζ frame above, except that the origin is removed to the centre of the Sun. It is commonly used in planetary orbit ...