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]
Equinox | Definition, Dates, & Facts | Britannica
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? - timeanddate.com
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.
Equinox – Definition, Facts, Dates - Science Notes and Projects
2024年9月4日 · What Is an Equinox? An equinox occurs when the Earth’s equator aligns with the Sun, making the Sun appear directly overhead at the equator. On the equinox, the Sun rises due east at the equator, and sets due west. This alignment results in nearly equal daylight and darkness across the globe.
Equinox - Education | National Geographic Society
2023年10月19日 · 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.
What is Equinox: Types, Dates, Diagram,and Solstice
2024年12月19日 · A fancy word for “equal night,” an equinox is when the sun crosses our Earth’s equator. This happens twice a year when the tilt of the Earth’s axis is perpendicular to the sun’s rays. In Latin, the word aequinoctium refers to an equal night, derived from the words aequus (equal) and nox (night).
What is an equinox? | Space
2024年3月19日 · Twice a year, day and night are about the same length in both the Southern and Northern Hemispheres. This phenomenon is called an equinox, which comes from the Latin words "aequus" (equal) and...
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