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EquinoxThe time when the sun crosses the earth's equator, making night and day of approximately equal length all over the earth and occurring about March 21 (the spring or vernal equinox) and September [..]
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Equinox(L: equi=equal; noce=night) the time when the length of day equals night. The vernal equinox is on 21 March, and the autumnal equinox about 22 September.
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EquinoxOne of the points of intersection between the ecliptic and the celestial equator. When the sun is at one of these two points, the length of day and night are equal everywhere on the earth. The sun is [..]
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EquinoxEither of the two points at which the Sun crosses the equator: or the dates on which these occurrences take place.
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EquinoxThe twice-yearly occurrence (about March 21 and September 21) when the sun at its highest point crosses the equator.
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Equinoxc. 1400, "point at which the sun crosses the earth's equator, making day and night of equal length everywhere," from Old French equinoce (12c.) or directly from Medieval Latin equinoxiu [..]
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Equinoxwhen the dividing line between day and night on earth passes through the North and South pole as the sun crosses the earth's celestial equator. • when day ≈ night worldwide. • occurs twice yearly [..]
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EquinoxThe two points at which the Sun crosses the celestial equator in its yearly path in the sky. The equinoxes occur on or near March 21 and September 22. The equinoxes signal the start of the Spring and [..]
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EquinoxThe time when the sun crosses the plane of the earth's equator occurring about March 21 and September 22.
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Equinoxperiod in which daylight and darkness are nearly equal. There are two equinoxes a year. Read more in the NG Education Encyclopedia
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EquinoxThe point at which the sun crosses the equator and day and night are each 12 hours long; the equinox occurs twice a year, in spring and fall. Back to Top
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EquinoxThe point at which the sun crosses the equator and day and night are each 12 hours long; the equinox occurs twice a year, in spring and fall. FEED
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Equinoxthe two annual periods when the sun crosses over the earth's equator either north to south or south to north, thereby making a day and a night of equal length: an unusual circumstance given the planet's tilt. The spring (or vernal) equinox is on March 21 or 22, and the autumn equinox on September 22 or 23. In other terms: the two periods [..]
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EquinoxThe date and time when the sun crosses the equator. On that day, the daytime and nightime are both very close to 12 hours. This happens about March 21 and September 21 each year. Many religious holy d [..]
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Equinoxthe point at which the sun crosses the equator and day and night are each 12 hours long: The equinox happens twice a year.
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Equinoxglaykhnakht
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EquinoxThe two times each year, near March 20th and September 22nd, when the Sun is directly overhead at noon as seen from Earth’s equator. On an equinox date, day and night are of equal length.
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Equinox(n) - times when the sun's rays are perpendicular to the equator; March and Sept. 21st
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Equinox(n) either of two times of the year when the sun crosses the plane of the earth's equator and day and night are of equal length(n) (astronomy) either of the two celestial points at which the cele [..]
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EquinoxThe time when the Earth is tilted neither towards nor away from the Sun, resulting in a night and day of equal length (Lesson 29)
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Equinoxoccurs on or about September 22 in the Northern Hemisphere and on or about March 21 in the Southern Hemisphere.
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Equinox(n.) An intersection of the ecliptic and the celestial equator. The center of the sun is geometrically above and below the horizon for equal lengths of time on the two days of the year when the sun pa [..]
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EquinoxThe equinoxes are the moments when the Sun is positioned directly over the Earth's equator and, by extension, the apparent position of the Sun at that moment. The equinox during which the Sun pas [..]
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Equinox
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EquinoxThe point at which the ecliptic intersects the celestial equator. Days and nights are most nearly equal in duration. In the Northern Hemisphere, the vernal equinox falls on or about March 20 and the a [..]
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Equinoxthe time of the year (around March 21 and September 23) when the position of the Sun in the sky (following the ecliptic) crosses the celestial equator. To a good approximation, the length of the day a [..]
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EquinoxThe equinoxes are times at which the center of the Sun is directly above the Earth's equator. The day and night would be of equal length at that time, if the Sun were a point and not a disc, and if there were no atmospheric refraction. Given the apparent disc of the Sun, and the Earth's atmospheric refraction, day and night actually becom [..]
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EquinoxIn astronomy, an equinox is defined as the moment when the sun reaches one of two intersections between the ecliptic and the celestial equator.
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Equinoxliterally "equal night", a day when the number of hours of daylight equals the number of hours of night. The vernal equinox, usually March 21, signals the onset of Spring, while the autumnal [..]
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Equinox(Astronomy) Time of the year (around 21 March and 23 September) when day and night have the same duration.
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EquinoxTwice during the year, September 21 and March 21, the length of day and night are equal because the tilt of the Earth's axis (in relationship to the sun) is nullified and both the Northern and So [..]
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Equinoxn. "(astro.) equinox," s.v. equinox OED. KEY: equinox@n
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Equinoxn 1 equinoxiis 1
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EquinoxThe time when the sun crosses the earth's equator, making night and day of approximately equal length all over the earth and occurring about March 21 (the spring or vernal equinox) and September 22 (autumnal equinox).
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EquinoxTwo points in which the sun crosses the celestial equator in its yearly path in the sky. Equinoxes signal the start of spring and autumn seasons that occur on or near March 21 and September 22, respec [..]
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EquinoxOne of the two points of intersection of the celestial equator and the ecliptic. The Sun passes through the vernal equinox on about 21 March and through the autumnal equinox on about 22 September. definition courtesy of: NWS Space Weather Prediction Center
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EquinoxThe point at which the ecliptic intersects the celestial equator. Days and nights are most nearly equal in duration. In the Northern Hemisphere, the vernal equinox falls on or about March 20 and the a [..]
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EquinoxThe point at which the ecliptic intersects the celestial equator. Days and nights are most nearly equal in duration. In the Northern Hemisphere, the vernal equinox falls on or about March 20 and the a [..]
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EquinoxThe point at which the ecliptic
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EquinoxThe time when the sun crosses the earth's equator, making night and day of approximately equal length all over the earth and occurring about March 21 (the spring or vernal equinox) and September [..]
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EquinoxThe point at which the ecliptic intersects the celestial equator. Days and nights are most nearly equal in duration. In the Northern Hemisphere, the vernal equinox falls on or about March 20 and the autumnal equinox on or about September 22.
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Equinox
(astronomy) The intersection of the apparent path of the sun in the sky (the ecliptic) with the celestial equator.
One of the two days on which this intersection occurs each year: (for the Norther [..]
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