Keyword Analysis & Research: equinox
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Equinox - Wikipedia
https://en.wikipedia.org/wiki/Equinox
WebThe modern definition of equinox is the instant when the Sun's apparent geocentric ecliptic longitude is 0° ( northward equinox) or 180° ( southward equinox ). [35] [36] [37] Note that at that moment, its latitude will not be exactly zero, since Earth is …
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Equinox | Definition, Dates, & Facts | Britannica
https://www.britannica.com/science/equinox-astronomy
WebMar 19, 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.
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What Is the Equinox? And What Is the Solstice? - timeanddate.com
https://www.timeanddate.com/astronomy/equinox-solstice.html
WebThe Equinoxes. There are only two moments each year when neither pole points toward the Sun, and the Sun lies directly above Earth’s equator. These moments are the equinoxes. The March equinox happens sometime between March 19 and 21. The September equinox occurs sometime between September 21 and 24.
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Equinox - National Geographic Society
https://www.nationalgeographic.org/encyclopedia/equinox/
WebOct 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. On Earth, there are two equinoxes every year: one around March 21 and another around September 22.
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What is an Equinox? | National Geographic - YouTube
https://www.youtube.com/watch?v=enlih8M5DN0
WebWhat are equinoxes? What causes these astronomical events? Find out how they influence the seasons and hours of daylight on each planet. Subscribe: http://b...
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March equinox 2025: All you need to know - EarthSky
https://earthsky.org/astronomy-essentials/everything-you-need-to-know-vernal-or-spring-equinox/
WebWhat is it? The March equinox – aka the vernal equinox – marks the sun’s crossing above Earth’s equator, moving from south to north. Earth’s tilt on its axis is what causes this northward shift...
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What is an equinox? | Space
https://www.space.com/what-is-an-equinox.html
WebMar 19, 2024 · What causes an equinox? When do the equinoxes happen? Who discovered the equinoxes? Additional resources. Twice a year, day and night are about the same length in both the Southern and Northern...
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The fall equinox is here. What does that mean? | AP News
https://apnews.com/article/equinox-solstice-astronomical-seasons-explained-af1a8b7a288d530eb6eb8be5ea320829
WebSep 22, 2023 · (AP Photo/Charlie Riedel, File) By MADDIE BURAKOFF. Updated 7:09 AM PDT, September 22, 2023. NEW YORK (AP) — Fall is in the air — officially. The equinox arrives on Saturday, marking the start of the fall season for the Northern Hemisphere. But what does that actually mean? Here’s what to know about how we split up the year using …
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Why the equinox ushers in the arrival of spring - National …
https://www.nationalgeographic.com/science/article/equinoxes
WebMar 15, 2024 · SCIENCE. Why the equinox ushers in the arrival of spring. Every six months, the equinox splits Earth's day almost in half. Here's how it happens—and why people have celebrated it since ancient...
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Autumnal equinox | Definition, Dates, & Facts | Britannica
https://www.britannica.com/science/autumnal-equinox
WebApr 19, 2024 · autumnal equinox, 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. In the Northern Hemisphere the autumnal equinox falls about September 22 or 23, as the Sun ...
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