How many hours are there in the daytime from summer solstice and winter solstice?
In the equatorial region, the day length of summer solstice is 12 hours, and that of winter solstice is 12 hours, with a difference of 0 hours.
At latitude 20, the summer solstice is 13 hours 13 minutes, and the winter solstice is 10 hour and 47 minutes, with a difference of 2 hours and 26 minutes.
At latitude 40 degrees north and south, the summer solstice is14h51min, and the winter solstice is 9 hours and 09 minutes, with a difference of 5 hours and 42 minutes.
The latitude is 60 degrees north and south, the summer solstice is 18 hours and 29 minutes, and the winter solstice is 5 hours and 3 1 minute, with a difference of 12 hours and 58 minutes.
At 66 degrees 34 minutes north latitude and above 66 degrees 34 minutes south latitude, the summer solstice is 24 hours long and the winter solstice is 0 hours long, with a difference of 24 hours.
Extended data:
Summer solstice custom activities:
1, offering sacrifices to God and ancestors:
(1) The summer solstice coincides with the harvest season of crops. Since ancient times, there have been customs of celebrating harvest and offering sacrifices to ancestors at this time to pray for a good year. Therefore, the summer solstice, as a festival, was included in the ancient ritual of offering sacrifices to the gods.
(2) The Han Dynasty's "Li Zhou Guan Chun" contains: "Summer solstice, causing local affairs." The solstice of summer is just after the wheat harvest. Farmers not only thank God for the bumper harvest, but also pray for the "autumn report".
Around the summer solstice, some places held a grand "Summer Wheat Festival", which is the relic of the ancient "Summer Wheat Festival" activities. Summer and shelter: On the solstice of summer, women give each other folding fans, powder and other things.
(4) "Youyang Miscellaneous Rites": "On the summer solstice, when you enter the model, you have a speech." "Fan" produces wind; "Powder fat" is suitable for dispelling turbid qi caused by body heat and preventing miliaria.
2. "Summer solstice" cuisine:
(1) "Wheat Zongzi" and "Summer Solstice Cake": Jiangnan food custom, which generally includes wheat Zongzi, corn millet, plums, wonton and noodle soup. "Wujiang County Records": "On the summer solstice, make wheat dumplings." . After the first sacrifice, you pay for it. Not only eat "wheat dumplings", but also give them to each other as gifts.
On the solstice of summer, farmers will roll pancakes, bake them and add vegetables, pods, tofu, bacon and so on. After ancestor worship, eat moon cakes, commonly known as "solstice moon cakes", or distribute them to relatives and friends.
(3) There is a folk saying that "eating noodles in summer makes a day shorter than a thread". Wei, a poet in the Tang Dynasty, once wrote that "the sundial is cloudy and the night leaks from now on".
(4) Winter solstice wonton, summer solstice noodle: Since ancient times, there has been a saying in China that "winter solstice wonton, summer solstice noodle". Eating noodles in Jiangnan area is an important custom in many areas, and there is a saying that "eating noodles in summer makes the day shorter".
(5) There are many kinds of noodles in the south, such as Yangchun noodles, dry soup noodles, shredded pork noodles, three fresh noodles, sesame oil noodles, cold noodles, etc., while there are noodles with gravy and noodles with dregs in the north. "Because new wheat has appeared from summer to day, eating noodles from summer to day also means tasting new things."
Baidu encyclopedia-summer solstice
Baidu encyclopedia-winter solstice