What is the Polar Day and Night date?

Happens:Arctic CircleWithin 66°34' north latitude and within 66°34's south latitude of the Antarctic Circle. The duration lasted six months.

In Antarctica. In the high latitudes, there is no rhythm of life of "sunrise and sunset", and there is no 24-hour day and night cycle. Polar Day.

and polar night is a natural phenomenon unique to the Polar Circle. It occurs within 66 degrees 34 minutes north latitude of the Arctic Circle and 66 degrees 34 minutes south latitude of the Antarctic Circle.

Note. The formation of the polar day and the polar night is caused by the rotation of the earth around its own inclined axis as it orbits the sun in an elliptical orbit.

It turns out that when the earth rotates, the earth's axis forms an approximate tilt angle with its perpendicular line.

Therefore, when the earth rotates, there is a 6-month period, and one of the poles is always facing the sun, and it is all daytime; The other pole of Shouyoumu is facing away from the sun, and it is all night. The North and South Poles are amazing natural phenomena that no other continent has.

The polar day and night range and time are:The polar day and night ranges are within 66°34' north latitude of the Arctic Circle and 66°34' min south latitude of the Antarctic Circle. The Antarctic polar day is from September 24 to March 20, and the polar night is from March 22 to September 22.

The Arctic Polar Day is from March 22 to September 22, and the Polar Night is from September 24 to March 20.

Polar day and night generation principle:

As the Earth revolves around the Sun in an elliptical orbit, it also rotates around its own inclined axis. It turns out that when the earth rotates, the earth's axis and its perpendicular line form an approximate inclination angle, so when the earth rotates, there is always one of the poles facing the sun for 6 months, and it is all daytime; The other pole is turned away from the sun, and it is all night.

The North and South Poles are amazing natural phenomena that no other continent has.

It depends on which line of latitude it is. Depending on the latitude value, the duration of the polar day and the polar night is also different.

Due to the inclination of the Earth's axis, the Earth is located at different positions in its orbit and the angle of direct sunlight is also different. On the equinox, the sun shines directly on the equator, and there is no polar day and night at the north and south poles. From the second day of the vernal equinox, the direct point of the sun moves north, and the polar day phenomenon begins at the North Pole and the polar night phenomenon begins at the South Pole.

As the direct sunlight continues to move northward, the range of polar day in the Arctic region is increasing, and the range of polar night in the Antarctic source search area is also increasing. By the summer solstice, the direct point of the sun is at the Tropic of Capricorn, and the Arctic region has the largest range of polar daylight, reaching the latitude line of the Arctic Circle. The extent of the occurrence of polar nights in the Antarctic region is also maximum, reaching the latitude line of the Antarctic Circle.

After that, the direct point of the sun shifted southward, and the extent of the polar day in the Arctic began to shrink, and the extent of the polar night in the Antarctic region also began to decrease. On the day of the autumnal equinox, the sun shines directly at the equator again, and the polar day and night phenomena at the poles disappear.

Therefore, if it is on the north and south poles, the time of the polar day and night is half a year. If it is a fissimile in the Arctic and Antarctic Circles, the time of the polar day and the night is one day each.

The date of the polar day in the Antarctic Circle is generally around December 22, when the sun shines directly on the Tropic of Capricorn. When the direct point is located at the Tropic of Capricorn, the polar day appears in the Antarctic Circle, and the polar night appears in the Arctic Circle, and the date is the winter solstice of each year.

September 24 - March 20; Polar Night: March 22 – September 22; North Pole: Polar Day:

March 22 - September 22; Polar Night: September 24 - March 20; Antarctic Circle: Polar Day:

December 22; Polar Night: June 22; Arctic Circle: Polar Day:

June 22; Polar Night: December 22. Pure cracking.

In addition to the above four places, the dates of the polar day and night in the areas between the Arctic Circle and the North Pole and between the Antarctic Circle and the South Pole are different at different latitudes, and it is impossible to specify the specific dates. In short, the closer you get to the poles, the longer the dates of the polar day and the polar night.

Polar Polar Night: Polar Polar Night Companion is a natural phenomenon in the polar regions of the Earth. The so-called polar day means that the sun never sets, and the sky is always bright; The so-called polar night is the opposite of the polar day, the sun never comes out, and the sky is always dark.