Equinox Definition & Meaning - Merriam-Webster
1. : either of the two points on the celestial sphere where the celestial equator intersects the ecliptic. 2. : either of the two times each year (as about March 21 and September 23) when the sun crosses the equator and day and night are everywhere on earth of …
Equinox - Wikipedia
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
Sep 27, 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? - 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. Earth, like nearly all the planets, orbits the Sun in a tilted fashion. ©NASA Johnson Space Center.
Equinox – Definition, Facts, Dates - Science Notes and Projects
Sep 4, 2024 · 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 Definition & Meaning | Dictionary.com
An equinox is one of the two times of the year when the amount of daylight and nighttime hours are just about of equal length. The two equinoxes occur around March 20–21 and September 22–23. The equinoxes occur on these days, but an equinox is not the whole day—it is the moment when the sun is directly above Earth’s equator.
EQUINOX | English meaning - Cambridge Dictionary
EQUINOX definition: 1. either of the two occasions in the year when the centre of the sun is directly above the…. Learn more.
EQUINOX | definition in the Cambridge English Dictionary
equinox. noun [ C ] us / ˈek.wə.nɑːks / uk / ˈek.wɪ.nɒks /. Add to word list. either of the two occasions in the year when the center of the sun is directly above the Equator, and day and …
What Does Equinox Mean? - Merriam-Webster
What Does 'Equinox' Mean? The vernal equinox marks the beginning of spring. So why does the word refer to 'night'? Most of us in the Northern Hemisphere eagerly await the vernal equinox, or the day every spring when the day and night are finally of equal length.
Equinox Definition & Meaning | Britannica Dictionary
Britannica Dictionary definition of EQUINOX. [count] : a day when day and night are the same length. There are two equinoxes in the year: the spring (or vernal ) equinox, which occurs around March 21, and the autumn (or autumnal ) equinox, which occurs around September 23. — compare solstice.
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