2021
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News about autumnal equinox, autumn, daylight
News about Harvest Moon, partial lunar eclipse, supermoon
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Equinox - Wikipedia. A solar equinox is a moment in time when the Sun crosses the Earth's equator, which is to say, appears directly above the equator, rather than north or south of the equator. On the day of the equinox, the Sun appears to rise "due east" and set "due west". This occurs twice each year, around 20 March and 23 September. [a]
Aug 23, 2024 · equinox, either of the two moments in the year when the Sun is exactly above the Equator and day and night are of equal length; also, either of the two points in the sky where the ecliptic (the Sun’s annual pathway) and the celestial equator intersect.
What Is the Equinox? And What Is the Solstice? By Graham Jones. Equinoxes and solstices are a result of two things: Earth’s tilt and its orbit around the Sun.
Summer solstice (June 20 or 21): longest day of the year, marking the start of summer. Autumnal equinox (about September 23): day and night of equal length, marking the start of autumn. Winter solstice (December 21 or 22): shortest day of the year, marking the start of winter.
What is it? It’s a milestone in Earth’s orbit around the sun. At an equinox, the sun appears directly above Earth’s equator. At the September equinox, it’s crossing from north to south. When is...
Oct 19, 2023 · An equinox is an event in which a planet ’s subsolar point passes through its Equator. The equinoxes are the only time when both the Northern and Southern Hemispheres experience roughly equal amounts of daytime and nighttime.
