What does an equinox mean?
noun. the time when the sun crosses the plane of the earth’s equator, making night and day of approximately equal length all over the earth and occurring about March 21 (vernal equinox , or spring equinox ) and September 22 (autumnal equinox ).
What is the origin of the term equinox?
Equinox descends from aequus, the Latin word for “equal,” and nox, the Latin word for “night”—a fitting history for a word that describes days of the year when the daytime and nighttime are equal in length.
What is the plural of Equinox?
equinox ( plural equinoxes or equinoctes) (astronomy) The intersection of the apparent path of the sun in the sky (the ecliptic) with the celestial equator.
What does solstice mean?
A solstice is an event occurring when the Sun appears to reach its most northerly or southerly excursion relative to the celestial equator on the celestial sphere. Two solstices occur annually, around June 21 and December 21. The term solstice can also be used in a broader sense, as the day when this occurs.
How do you spell solstice?
noun. Astronomy. either of the two times a year when the sun is at its greatest distance from the celestial equator: about June 21, when the sun reaches its northernmost point on the celestial sphere, or about December 22, when it reaches its southernmost point. Compare summer solstice , winter solstice .
What are the 4 equinoxes?
So, in the Northern Hemisphere you have: Vernal equinox (about March 21): day and night of equal length, marking the start of spring . 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.
What is difference between Equinox and Solstice?
While the solstices result in a change of the length of night and day, the equinoxes do not. The summer and winter solstices result in the longest and shortest day of the year respectively while the equinoxes result in an equal amount of daylight and darkness received all across the earth.
What happens during equinox?
At the equinox , Earth’s two hemispheres are receiving the sun’s rays equally. Night and day are often said to be equal in length. In fact, the word equinox comes from the Latin aequus (equal) and nox (night).
Is Equinox the same everywhere?
But the equinoxes (there’s one in March, too) are the points of the year where the part of the earth closest to the sun is the equator rather than places north or south of it. Everywhere from the North Pole to the South Pole gets the same number of hours of sunlight, just for those two days a year.
Is it the equinox today?
The equinox will arrive on September 22, 2020, at 13:31 UTC. That’s when the sun will be exactly above Earth’s equator, moving from north to south. Although the equinox happens at the same moment worldwide, your clock time will depend on your time zone.
What is a sentence for Equinox?
Equinox sentence examples . There were a lot of tourists in town, probably for the autumn equinox, which drew people from around the world every year. The autumn equinox is almost upon us.
What is the plural of Solstice?
Noun. solstice ( plural solstices ) One of the two points in the ecliptic at which the sun is furthest from the celestial equator. This corresponds to one of two days in the year when the day is either longest or shortest.
What does solstice mean in science?
The solstice (combining the Latin words sol for “Sun” and sistere for “To Stand Still”) is the point where the Sun appears to reach either its highest or lowest point in the sky for the year and thus ancient astronomers came to know the day as one where the Sun appeared to stand still.