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Around March 21 and September 22 is the time called the equinox.What is an equinox?
Wiki User
∙ 12y ago
There are different ways to explain this; for example:
- For an observer at the Earth's equator, the Sun will cross the zenith (the point directly overhead) during the equinoxes. At other times of the year, the Sun is further north or south for such an observer (up to 23.5 degrees north or south).
- During the equinoxes, the Earth (or the Sun, from out point of view) is at the points where the ecliptic (the plane of Earth's orbit) crosses the plane related to Earth's rotation.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoWhen the hours of darkness in a day is equal to the hours of daylight - ie: 12 hours of each. The word "equinox" is made from two parts "equi-" from the word "equal" and "nox", the Latin word for "night". So "equinox" means "equal nights", meaning that the duration of the day is equal to the duration of the night.
In summer, the days are longer than the nights; in winter, the nights are longer. The Equinoxes occur on March 20 or 21 and on September 20 or 21, when the Sun is directly over the Equator.
Wiki User
∙ 12y agoThe date of the equinox is generally on March 21 (plus or minus a day or so, because of the cycle of leap years). You can look up the precise date and time of the equinox on the U.S. Naval Observatory's web site in the "Earth's Seasons" web page.
In 2012, the March equinox will occur on March 20, at 05:14 GMT.
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Which date in year does the day and night equal?
When the day and night are equal it is called the equinox (means literately equal night). It happens twice a year. Once in the sping called the vernal equinox which occurs on the March,20 or 21 each year. Once in the autumn or fall called the autumnal equinox which happens September, 21 - 22each year.
What is spring called?
the vernal equinox
An equinox occurs when?
There is an equinox in the spring called the vernal equinox, and one in the fall called the autumnal equinox. They happen at the moment that the center of the sun is in the earth's equatorial plane. In other words, they occur at the moments when the sun passes directly over the equator.
What is the first day of spring called?
The first day of spring is called vernal equinox!
What equinox occurs on June 21 or 22?
The time period that you are referring to is called the summer solstice. It begins around June 21-22 and ends around September 22. This is the time when the earth's path around the sun has forced the Northern Hemisphere to start pointing directly at the sun. At that point, every part of the Northern Hemisphere sees the sun for more than 12 hours and every part of the Southern Hemisphere sees the sun for less than 12 hours. The autumnal equinox occurs about halfway through this event.Hope this helps ~ CB
What is the name of the day in which the day and night are both equal in duration?
It is called an equinox. In the spring it is known as the Vernal Equinox while in the autumn it is known as the Autumnal Equinox. Both take place around the 21st of March/September, but the date varies slightly each year.
Twice a year the sun is directly over the equator this is called the?
The Sun is directly overhead the equator two times per year, known as the Equinoxes. In the northern hemisphere, the Spring Equinox occurs on March 20 and the Fall Equinox occurs on September 22.
Where does the sun shine directly overhead on September twenty first?
It is called the Equinox. It is when both axis of the world are facing away from the sun. The sun's plane then is directly over the Equator. It happens twice a year, there is the September Equinox and the March Equinox.
When was the vernal equinox in Leo?
At around 10,500 B.C the vernal equinox is thought to have been in Leo. In astrology this is called the Age of Leo.
When day and night are equal called?
It is called equinox. Equinox happened 2 times per year on spring and autumn so called the name spring equinox and autumn equinox.
Which date in year does the day and night equal?
When the day and night are equal it is called the equinox (means literately equal night). It happens twice a year. Once in the sping called the vernal equinox which occurs on the March,20 or 21 each year. Once in the autumn or fall called the autumnal equinox which happens September, 21 - 22each year.
What is it called when day and night are equal on earth?
It's called an Equinox.
What is it called when northern hemisphere and Southern Hemisphere receive the same amount of light?
It is called an equinox and it happens twice a year, once in March and once in September.
Two days a year around March 21 and September 21 all placces on the earth have twelve hours of daylight and twelve hours of night What is the name given to these days?
It is called " Equinox " here is a link to info about it. http:/enzperiodzwikipediazperiodzorg/wiki/Equinox check it out! -sidsidney this answer was placed 12/3/09 :) :)
What is the time interval between vernal equinoxes called?
one year. the vernal equinox is on March 21, or the first day of spring. an equinox is when day and night is equal (12 hours daylight, 12 hours nighttime). there is a Vernal equinox in spring, and an autumnal equinox on the first day of autumn (or fall), September 21.
What is the term when the sun is directly over the equator?
It's called the Equinox, which happens biannually, one called Vernal Equinox (Spring), and one called Autumnal Equinox (Fall).
Day and night are equal at?
Equal periods of sun-up and sun-down are all near March 21 and September 21, everywhere on earth, including the equator. Those days are often called the "equinoxes", but the equinoxes are actually the points in the sky where the sun appears to be located on those days.
