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The March equinox [7] [8] or northward equinox [9] is the equinox on the Earth when the subsolar point appears to leave the Southern Hemisphere and cross the celestial equator, heading northward as seen from Earth.
Later it was realized that this happens on a day when the duration of the day and the night are practically equal and the word "equinox" comes from Latin aequus, meaning "equal", and nox, meaning "night". In the northern hemisphere, the vernal equinox (March) conventionally marks the beginning of spring in most cultures and is considered the ...
The Southern Hemisphere is the half of Earth ... (inclusive). September 22 or 23 is the vernal equinox and March 20 or 21 is the autumnal equinox.
In the Southern Hemisphere, the March equinox marks the beginning of astronomical autumn. The last weekend of the month will be a great time for stargazing as the moon lines up with two planets in ...
In 2024, the spring equinox happens on March 19 at 11:06 p.m. EDT. But while the vernal equinox takes place the evening of March 19 in the United States, it will already be March 20 for most of ...
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Given the different Sun incidence in different positions in the orbit, it is necessary to define a standard point of the orbit of the planet, to define the planet position in the orbit at each moment of the year w.r.t such point; this point is called with several names: vernal equinox, spring equinox, March equinox, all equivalent, and named considering northern hemisphere seasons.
In the Northern Hemisphere, the meteorological beginning of spring occurs on the first day of March. The March equinox on the 20 or 21 marks the astronomical beginning of spring in the Northern Hemisphere and the beginning of autumn in the Southern Hemisphere, where September is the seasonal equivalent of the Northern Hemisphere's March.