How is the summer solstice calculated? How many hours and minutes of sunshine will there be during the summer solstice in 2020?
As one of the 24 solar terms, the summer solstice is also a very important solar term. So, let’s take a look at how the summer solstice is calculated. How many hours and minutes of sunshine will there be during the summer solstice in 2020? Want to know more about the auspicious and inauspicious days in the fifth lunar month of 2020? Then come to Shuimoxiansheng.com’s special section on May 2020 of the lunar calendar to read related articles.How is the summer solstice calculated?The summer solstice is the day with the longest daylight in the whole year. On the summer solstice, the sun reaches its northernmost point of the year, almost directly above the Tropic of Cancer (230 26' north latitude). The daylight in the northern hemisphere is longest, and the further north you go, the longer the daylight becomes. For example, the day length in Haikou, Hainan is a little over 13 hours, in Hangzhou it is 14 hours, in Beijing it is about 15 hours, and in Mohe, Heilongjiang it can reach more than 17 hours.Summer solstice date calculation formula: Date = [Y*D+C]-L Formula analysis: Y=last two digits of the year; D=0.2422; 21st century C=21.37; L=leap year number. How many hours and minutes of sunshine will there be during the summer solstice in 2020?The sunshine hours on the summer solstice depend on the location, and can vary greatly between places at different latitudes.According to the Kezunxiandu Manuscript, "When the sun reaches its northernmost point, the day is at its longest, and the shadow is shortest, it is called the summer solstice. 'Zhi' means "extreme." On the summer solstice, the sun's position directly above the ground reaches the northernmost point of the year, almost directly above the Tropic of Cancer (23°26' north latitude). It is the day with the longest daylight throughout the year in all parts of the Northern Hemisphere, and the higher the latitude, the longer the daylight. For example, the day length in Haikou, Hainan is a little over 13 hours, in Hangzhou it is 14 hours, in Beijing it is about 15 hours, and in Mohe, Heilongjiang it can reach more than 17 hours. North of the Arctic Circle, the sun stays above the horizon all day, making it the day with the longest polar day in the Northern Hemisphere. At the same time, for areas on and north of the Tropic of Cancer, the summer solstice is also the day when the sun is highest at noon in the year. In the Beijing area, the sun's altitude at noon on the summer solstice reaches 73°32′. On this day, the Northern Hemisphere receives the most solar radiation, nearly twice as much as the Southern Hemisphere. It is midwinter in the Southern Hemisphere at this time. Do you know the origin of the summer solstice?The "Twenty-Four Solar Terms" are the product of ancient agricultural civilization. Agricultural production is closely related to the rhythm of nature. It is a knowledge system formed by ancient ancestors who adapted to farming time, observed the movement of celestial bodies, and recognized the changing laws of time, climate, and phenology in a year. The 24 solar terms are specific solar terms in the Ganzhi calendar that represent the changes in natural rhythms and establish the "Twelve Months" (Monthly Orders). In the course of historical development, the 24 solar terms were included in the lunar calendar and became an important part of the lunar calendar. The 24 solar terms are: Beginning of Spring, Rain Water, Waking of Insects, Vernal Equinox, Pure Brightness, Grain Rain, Beginning of Summer, Grain Full, Grain in Ear, Summer Solstice, Lesser Heat, Greater Heat, Beginning of Autumn, End of Heat, White Dew, Autumnal Equinox, Cold Dew, Frost Descent, Beginning of Winter, Light Snow, Heavy Snow, Winter Solstice, Lesser Cold, Greater Cold. Each solar term represents different changes in the "three phenomena" of climate, phenology and time.Destiny, that is, fate and luck, refers to a pattern in which things are carried out by a combination of constants and variables. Destiny and luck are two different concepts. Do you know what your destiny is? Click on the following exquisite calculation to predict your destiny. |
>>: When is the summer solstice in 2020? Is it an auspicious day?
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