What time is the winter solstice in 2021? Is it December 22 every year?
The winter solstice is one of the twenty-four solar terms.The annual solar term is between December 21st and 23rd, not necessarily December 22nd.For example, the winter solstice time in 2021 is at 23:48 on December 21, 2021 in the Gregorian calendar, which is the eighteenth day of the eleventh month of the lunar calendar.
Introduction to the Winter Solstice
The winter solstice is the shortest day of the year in the northern hemisphere, and the day gets shorter as you go north.North of the Arctic Circle, the sun is below the horizon all day, making it the most polar night of the year in the northern hemisphere.For the rest of the Northern Hemisphere, the winter solstice is also the day with the lowest midday sun of the year.The winter solstice is cold and freezing, and there are fewer outdoor activities, and people spend more time at home to rest.The winter solstice has become a festival for visiting relatives and friends."Fat winter thin year", in the folk, winter solstice solar terms also hold winter celebration and winter worship activities, such as the winter solstice festival in November lunar calendar, worship family temples, blessing temples, worship parents and elders, and hold family banquets to congratulate relatives.The custom of eating dumplings on the winter solstice is widely spread among the people.
The origin of the winter solstice
The names of the twenty-four solar terms were first seen in the Western Han Dynasty "Huainanzi·Tianxun".", absorbs the solar terms as a supplementary calendar to guide agricultural affairs, and stipulates that the month without mid-qi is set as the intercalary month of the previous month.In the process of inheritance and development, the twenty-four solar terms are included in the lunar calendar and become an important part of the lunar calendar to form a yin and yang calendar.
Among the twenty-four solar terms, the "Winter Solstice" is the earliest one to appear.The winter solstice is the mid-air of November in the lunar calendar.The concept of "Winter Solstice" appeared as early as the Yin and Shang Dynasties, but at that time people called the Winter Solstice as "Solstice", "South of the Sun", "South of the Sun", etc.These words have been found in the oracle bone inscriptions of Yin Ruins.The earliest appearance of the "Winter Solstice" may be because the ancients were too sensitive and concerned about this date - after the Winter Solstice, the days are getting longer and longer, and after a period of severe cold, the weather will gradually turn warmer.
The specific time of the winter solstice in 2021
The winter solstice is the 22nd solar term in China’s twenty-four solar terms, when the sun reaches the ecliptic longitude 270°.The "Copyon of the Constitution" records:"The arrival of the cathode, the beginning of yang, the arrival of the sun in the south, the arrival of the short day, and the arrival of the shadow of the sun, so it is called the winter solstice." longest.As early as the Spring and Autumn Period more than 2,500 years ago, China has used Tugui to observe the sun and determine the winter solstice.It is the earliest one of the twenty-four solar terms, and the time is from December 21 to 23 of the annual Gregorian calendar.day.Therefore, the time of the winter solstice in 2021 refers to 23:48 on December 21, 2021 in the Gregorian calendar, which is the eighteenth day of the eleventh month of the lunar calendar.
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