On which dates of the year do the Arctic and Antarctic zones have equal hours of daylight?
402911
The Vernal and Autumnal Equinoxes, or the first day of Spring and Fall. Spring starts on either March 20th/21st and Fall begins on October 20th/21st. These 2 days every year, not only do the arctic/antarctic areas both have equal hours of daylight, but the entire planet have 12 hours of daylight and 12 hours of night. On these 2 days, the plane of the Sun is directly above the Equator.
1110242
An excellent question!\n\nSince there are no boundries in the polar regions — the Arctic is ocean and the continent of Antarctica has no nations - time zone lines follow longitude lines in these places. \n\nSince all longitude lines come together at the poles, you can walk through all of the time zones in seconds by walking around the pole that marks the South Pole. Imagine walking around the pole in the photo above on this page. \n\nThere's no North Pole pole since drifting sea ice covers the location and anything put there, such as an automated weather station, drifts away. Our story about the Christmas Day North Pole temperature has more on this. \n\nAs a practical matter, having all of the time zones means there is really no time zone for the polar regions. In Antarctica, the U.S. stations uses New Zealand time because most Americans who go to Antarctica for the U.S. Antarctic Program fly to and from there via Christchurch. \n\nOnce you arrive in New Zealand for the U.S. Antarctic Program, you could fly to Antarctica, everywhere that a U.S. airplane could take you on the continent, and back to Christchurch without ever having to change the time on your watch. \n\nSince the only station at the South Pole is the U.S. station, the time used there is New Zealand time.\n\nOther nations tend to use their home time zones in Antarctica, which makes radio and e-mail contacts simpler. \n\nThe permanent research stations in the Arctic are in countries, such as the Barrow Science Center in Barrow, Alaska, and these use the local time. When researchers venture out onto the Arctic Ocean ice, they can use any time the wish. But, in most cases it's probably easier to use the time for the institution, such as a university, that you are working for. \n\nYou can learn a lot more about what goes on in the polar regions by going to our Science, life and travel in the polar regions page
1012414
the more north during the winter months you go from the equator, the longer the it stays dark, there is one day in a year in North Pole where it will stay dark for 24 hours, the same holds true for the southern hemisphere during its respective winter time.
612436
It's all to do with the angle of the earth.  It doesn't sit in an upright position, rather it reclines at and angle of 23 degrees.  It also rotates around the sun once a year which means that at times parts of the earth are pointing towards the sun and other parts are pointing away.\n\nThe further north or south you go the more pronounced the difference in daylight hours is.  For example, if you venture into the Arctic Circle (within 23 degrees of the pole) you can have 24 hour daylight during the summer months and 24 hours darkness during the winter months.\n\nBecause India is closer to the equator the difference in sunrise and sunset times is less variable than it is in Australia or the UK.  In the UK for example at this time of year it's daylight up until about 10PM but during the winter months it's dark by 4PM.
185180
The earth's shape and rotation make it imposible to have the same amount of light throughout the globe at any particular time, it is day on one side of the world while it's night on the opposing side. Time zoning is meant to give us a reasonably standard method to measure time OF DAY throughout the globe.
259299
only the exact spot at the north pole and south pole have one day per year. Alaska is not at either of these places.\n\nHowever, at the poles, the reason for the one day per year effect is that the earths rotation at these two places does not cause any crossing of the earths terminator (region darkness starts to envelop the earth) at any time of the year. \n\nAreas inside the artic and antartic circles do have extended days (weeks to months depending on how close to the pole), but only the exact spot at the poles have 6 month light/dark phases.
650115
The aurora is a glow observed in the night sky, usually in the polar zone. For this reason some scientists call it a "polar aurora" (or "aurora polaris"). In northern latitudes, it is known as "aurora borealis" which is Latin for "northern dawn" since in Europe especially, it often appears as a reddish glow on the northern horizon as if the sun were rising from an unusual direction. The aurora borealis is also called the "northern lights". The aurora borealis most often occurs from September to October and March to April. Its southern counterpart, "aurora australis", has similar properties
269206
It's the angle of the earth's rotation.  The northern hemisphere tilts away from the sun during winter, causing long periods of darkness, and towards the sun in summer, causing longer daylight hours.  At the extreme nothern latitudes, this leads to constant daylight or constant darkness at those times of the year.
223500
>There are 24 longitudinal divisions of Earth's surface in which a standard time is kept, the primary division being that bisected by the Greenwich meridian. Each zone is 15° of longitude in width, with local variations, and observes a clock time one hour earlier than the zone immediately to the east.Under this scheme, local time is always close to mean solar time, while comparing the time in different places is a simple matter of adding or subtracting whole hours. However, the one hour separation is not universal and,the shapes of time zones can be quite irregular because they usually,but not always,follow the boundaries of states,countries or other administrative areas.Some states do have more than one time zone.
532804
The Arctic and Antarctic are literally poles apart. While they share some characteristics, such as high latitude, cold and remoteness, they also exhibit significant differences. The Arctic is dominated by a large deep central ocean surrounded by land masses. The Antarctic is a large, partially ice-covered land mass surrounded by ocean. \n\nEnvironmental Differences: \nThe Arctic has trees but Antarctic does not\nAntarctica is a continent land mass but the Arctic is a sea with edges of other countries in the Arctic circle.. \nThe Arctic has indigenous people and the Antarctic doesn't. \nThe Arctic has tundra but not the Antarctic\n\nWeather differences: \nAntarctic has strong winds but the Arctic has mild winds. \nAntarctica is colder and windier than the Arctic\n\nAnimal and Plant Life differences: \nThe Arctic has polar bears and the Antarctic does not. \nThe Antarctic has penguins and the Arctic doesn't. \nThe Antarctic has no trees. \nThe Arctic has Tundra with rich plant life in Spring and Summer. \nAntarctic has algae but not the Arctic. \nAntarctica has mainly calm animals but the Arctic has some fierce ones\n\n\nHuman Activity Differences: \nThe Arctic has Eskimos and Antarctica does not. \nThe Arctic has igloos and Antarctica does not. \nLong ago, Laps and Eskimos used the northern polar region but nobody lived in the southern polar region. \nThere are towns in the Arctic but not in Antarctica - just research bases. \nAntarctica wasn`t found for a long time when the Arctic was already found. \nWhen the sea is free from the ice in summer in the Arctic the hunter goes after seals.
775724
It's any time you want! All the time zones come together at both poles, so asking what time it is at the North Pole is like asking which way is north. \nLocal time at all other locations on the Earth's surface is based on the Sun's position relative to the celestial meridian, an imaginary line running north and south directly overhead. Noon is based on when the Sun crosses the local meridian, which also corresponds to its highest point in the sky on a given day. \nAt the North Pole, there is no north/south line that can define a meridian. Also, on any given day the Sun circles the sky at the same apparent altitude. There is no "highest position" to define noon. \nBy convention, I assume it would be convenient to select the prime meridian and its corresponding zulu time as the standard time at either pole.
1143795
You need to remember the Sun is in its quiet period as part of its 11 year cycle, so activity may not be that great...\n\nTo the other parts of your question... the Aurora Australis would be just as spectacular as its northern counterpart, it's just not seen by as many people. Have a look at the planet: there is virtually no land between 40S and Antarctica, so the only people to see it in it's full glory are those at sea or on research stations.\n\nI've seen (and photographed) it here from Victoria, Australia, as a pink and green glow with the occasional ray.\n\nCheck the link below for more info....
965624
At the antartic circle, the sun never sets.\n\nThe antarctic circle is on the continent of antarctica.\n\nCompasses do not work within the antarctic circle.\n\nNo stars are visible in the antarctic circle.
1163061
It's not.  It's the longest, but not the shortest.  The shortest is the first day of winter.  And technically, they're both the same length, about 24 hours, but first day of summer has the most daylight and first of winter has the least.  I has to do with the earth's rotation on it's axis-- on the first of summer the hemisphere in question is closest to and tilted towards the sun, maximizing daylight.  The first of winter it's still closest to, but tilted away from the sun, minimizing daylight
123124
Both the northern and southern hemispheres have winter and summer solstaces, except there are in reverse order: i.e. when the north is having its winter solstace, the south is having its summer solstace and vice versa.\n\nSo which one do you mean? During the north's winter solstace, it is summer in South Africa; and vice versa.\n\nBe aware though, that the earth experiences its apogee from the sun near the time of the northern hemisphere's summer solstace and its perigee near the sun during the northern hemisphere's winter solstace.\n\nThis may easily contribute to the northern hemisphere's milder winters and summers than the southern hemisphere, and explains why the Antarctic is colder than the Arctic.
975517
Every time zone is 1 hour apart\nbecause the earth is round
1174090
Australia.\n12:30 A.M and 4:30 A.M!