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When is the north pole dark 24 hours a day?
The North Pole is dark for six months- from the September Equinox (September 21) to the March Equinox (March 21).
What types of equinox are there?
There are two kinds; the vernal equinox when the Sun passes over the equator heading toward you, or the autumnal equinox when the Sun passes over the equator going away from you. If you live in the northern hemisphere - North America, Asia, Europe - the vernal (or spring ) equinox is around March 21. If you are in the southern hemisphere - most of Africa and south America, and all of Australia - the vernal equinox is around September 21. Each of these dates can shift one or two days either way depending on the cycle of leap years. In 2010, the March equinox (vernal for us in the north, autumnal for you Aussies) is on March 21 at 17:32 GMT. The September equinox (my autumnal here in California, but vernal for my friends down in Kiwi Land :-) ) is on September 23 at 03:09 GMT.
What time is the vernal equinox in North America?
The vernal equinox in North America typically occurs around March 20th or 21st each year. During this time, day and night are approximately equal in length, marking the beginning of spring in the Northern Hemisphere.
What is the latitude of the sub solar point on March 21?
On March 21, the subsolar point is located at the Tropic of Cancer at approximately 23.5 degrees north latitude. This is because the tilt of the Earth's axis causes the Sun to be directly overhead at either the Tropic of Cancer (23.5 degrees North) on the March equinox or the Tropic of Capricorn (23.5 degrees South) on the September equinox.
What are the places where the ecliptic crosses the equator are called?
The places where the ecliptic crosses the equator are called the vernal equinox (where the Sun crosses from south to north) and the autumnal equinox (where the Sun crosses from north to south). These are the points where day and night are equal in length, marking the beginning of spring and autumn, respectively.
In the northern hemisphere in what month is the autumnal equinox?
The Answer is September since it is the north
What is the scientific name of the first day of fall?
In North America, the first day of fall is considered to be on September's equinox. Every year, there is another equinox around March 20.
Is the north end of Earths axis tilted away from the sun during an equinox?
During an equinox, neither the North nor the South end of Earth's axis is tilted away from the Sun. This is because during an equinox, the tilt of Earth's axis is perpendicular to the Sun's rays, causing equal illumination of both the Northern and Southern Hemispheres.
How many degrees north or south of the equator at noon for the March Equinox?
At the equinox (either one of them) the Sun is directly above the equator, neither north nor south.
Where is the sun in the autumnal equinox?
Exactly straight over the equator. It's a tiny bit north of the equator just before the Autumnal Equinox, and a tiny bit south of the equator just after it. In other words, the sun is 'moving' south. At the Vernal Equinox, it's also precisely over the equator, but 'moving' north.
What time of year does the cirle of illumination pass through the North and South Poles?
The circle of illumination passes through both the north and south poles only twice each year, on the spring and autumn equinox. The spring equinox occurs around March 20 and the autumn equinox occurs around September 22.
When is the north pole dark 24 hours a day?
The North Pole is dark for six months- from the September Equinox (September 21) to the March Equinox (March 21).
What are some important minerals in Raleigh?
feldspar (: my special mineral , they are also found all over north carolina
An equinox occurs on the same day at the same time in both hemispheres?
Correct. The March equinox, which is typically March 21 but can vary by a day either way, is the spring equinox in the northern hemisphere, because the Sun us rising into the northern hemisphere. At that very same moment, it is the autumnal equinox in the southern hemisphere, because as the Sun is moving INTO the northern hemisphere, it is moving away from the southern hemisphere. The September 21 equinox sees the Sun moving south of the equator, so the spring equinox in the south, while it is the autumnal equinox in the North.
What religions are important in Germany?
In the south of Germany especially in Bavaria, Roman Catholic is the main religion. In the north, generally people are Lutheran.
Which of these signals the beginning of fall?
The vernal equinox is the first day of spring (occurring when the North Pole begins to lean toward the sun). The autumnal equinox is the first day of autumn (occurring when the North Pole leans away from the sun).
When does the equinox start?
The vernal equinox, and the autumnal equinox, happen in a single moment for the entire globe; they are not on-going phenomena that start at one time and end at a later time. The vernal equinox (in the north) will be March 20 2013 at 11:02 UT, which is for all practical purposes the same as 11:02AM, Greenwich Mean Time. This is the autumnal equinox in the southern hemisphere.Each year the actual time of the equinox changes by several hours, a table showing all forthcoming times and dates can be found on the related link.
