Introduction: In winter, the temperature of the sun seems to have been cooled by ice and snow, and the weather never warms up. Compared with the south, the weather in the Northeast is colder in winter. So, does anyone know what time does it get dark in the Northeast in winter? At what time does it start to get dark in winter in the Northeast? Let’s take a look.
What time does it get dark in the Northeast in the winter?
It gets dark between 5 and 6 in the Northeast in the winter. Judging from past data, it gets dark very early in the Northeast in the winter, so this is mainly because Because the direct point of the sun is south of the equator in winter, it gets dark earlier in the north. If the direct point of the sun is on the Tropic of Capricorn, polar day and night will appear in Antarctica.
What is the time of sunrise and sunset related to?
The time of sunrise and sunset is related to the longitude, latitude and season of the place.
The influence of longitude: The rotation of the earth causes the replacement of day and night. The sun rises and sets earlier in the east than in the west (when the latitudes are not much different). Example: Sunrise and sunset at 7:36 and 17:00 in Beijing on January 1, 2017 , while in Urumqi in the west, the sun rises at 9:43 and sets at 18:45.
The influence of latitude: Due to the revolution of the earth and the change of the direct point of the sun, the higher the latitude, the shorter the day length in the winter half of the year, and vice versa in the summer half of the year. For example, on the same day, the sun rises at 7:08 and sets at 17:53 in Guangzhou. The longitude is not much different from that in Beijing, but the sun rises early and sets late. This is caused by the length of the day.
Influence of seasons: In the same area, the days are long and the summer is long and the winter is short. On the winter solstice, the sun rises at 7:32 and sets at 16:53 in Beijing. On the summer solstice, the sun rises at 4:46 and sets at 19:46.
It can be judged from this that in various regions of the country, in winter, the sunset is late in the southwest, the sunrise is early in the southeast, the sunset is early in the northeast, and the sunrise is late in the northwest; in summer, the sunrise is late in the southwest, the sunset is early in the southeast, and the sunrise is in the northeast Early in the morning, sunset in the northwest.
Issues that need attention:
Due to scattering and viewing angle effects, the visual day length on flat land is longer than the theoretical day length, so it is found that the day is slightly longer than the night at the spring and autumn equinoxes; the higher the latitude The more oblique the setting process of the high sun, the more obvious the scattering; at the same time, scattering also causes the twilight phenomenon before sunrise and after sunset, that is, the sky is bright earlier than the sunrise, and the sunset is earlier than the dark (the visual duration, in Beijing, is about 30 minutes, depending on weather and terrain).
It is incorrect to say that the time between sunrise and sunset is 12 o'clock. There are longitude effects and seasonal effects. The longitude of Beijing is about 116.5 degrees, which is 14 minutes later than the reference time of the East Eighth District at 120 degrees east longitude. The annual average midday time is 12:14, and there are changes throughout the year. The beginning of winter is 11:58 and the beginning of spring is 12: 28. This change is caused by the orbital ellipse, causing the sunrise and sunset times to wobble. The day lengths at the beginning of winter and the beginning of spring are almost the same, but the sunrise and sunset times differ by about 30 minutes.
How Northeastern people survive the long and cold winter
As the saying goes, where the water and soil nourish a person, the severe cold in the Northeast has also worn down the will of the Northeastern people.
In winter, Northeastern people wear thick cotton clothes to resist the severe cold.
In the past, Northeastern people had unique ways to protect themselves from the cold in winter. Older farmers all know that the Northeast has three major characteristics: windows are papered on the outside, a girl holds a big tobacco bag in her mouth, and a child is hung up.
Papering the outside of the windows
In order to resist the invasion of the severe winter, rural Northeastern people in the past would paper the outside of the windows. Until now, many rural areas in Northeast China still have this kind of old houses with papered windows.
When I was a child, in winter, my mother would paste the windows and stick the window paper on the outside of the window frame. My mother told me that this would keep me warmer.
Big Tukang in Northeastern Rural Areas
In the past, people in Northeastern rural areas slept on Tukang. There are "kang holes" under the Tukang. There are usually three holes in a Tukang. People fill the "zaohuotang" in the outer house with firewood and burn fire. When the flames and smoke pass through the three holes of the Tukang, the Tukang will become It's very hot. It's very warm when you lie on the pit. The kang at home is warm, and the house is naturally warm. Every household also has a large brazier. The brazier is made of earth and filled with charcoal fire.
(Now, I can still make a brazier from clay.) Farmers with skillful hands will smear the outside of the brazier with black powder from the stove hall, and then use a small bottle to grind and press it, and the loess pot will turn into a shiny black earthen pot.
Large Cellar in Northeastern Rural Areas In the Northeast, every rural household has a large Cellar. Many farmers put vegetables for the winter into the earth cellar. The earth cellar is very warm. It is cold and freezing outside, but the earth cellar is as warm as spring. Farmers would dig a large earth cellar in a sunny place on high ground, then simply renovate the earth cellar and put some daily necessities in it.
In winter, the whole family stays here. To put it simply, a large earth pit in rural areas of Northeast China is a large earth pit. People use thick wood to build the top of the pit firmly to prevent it from collapsing when it snows in winter. The large earth pit is several meters deep underground. , it was freezing cold outside, the north wind was howling, and people were living happily in the big pits.
There is a large iron stove in the big pit. The main function of this large iron stove is for heating and cooking. Usually, farmers set up a large iron stove at the entrance of a pit. The large iron stove is made of mud and stones, with a large pot on it. All meals for the family are made in this pot.
The walls of the pit are smooth and flat. Diligent farmers will paper the walls of the pit, which is not only clean and tidy, but also keeps warm. Don't underestimate a thin layer of paper. Paper has good warmth retention properties. White paper eliminates the three ways of heat conduction: conduction, convection and radiation.
Last year, the boy next door brought back a southern girlfriend. In the winter, the girl was so cold that she cried.