Is the Winter Solstice the first solar term in winter? What is the origin of the winter solstice?

Is the Winter Solstice the first solar term in winter? What is the origin of the winter solstice?
The Winter Solstice is one of the most important solar terms in winter and also a traditional festival. Want to learn more about the Winter Solstice? "Winter Solstice is as important as New Year's Day." It is both one of the 24 solar terms and a traditional festival of the Chinese nation. Make an appointment with Mr. Shui Mo in November of the lunar calendar in 2021 to spend the winter solstice with you.

Is the Winter Solstice the first solar term in winter?

The Winter Solstice is not the first solar term in winter, but the fourth solar term in winter . The first solar term after the Winter Solstice is the Beginning of Winter.
Winter Solstice is the twenty-second solar term in the twenty-four solar terms and the fourth solar term in winter. When the Big Dipper points to Zi, the sun's ecliptic longitude reaches 270°, and the solar term falls on December 21st to 23rd of the Gregorian calendar every year.
The winter solstice is the extreme point of the sun's direct southward movement. On this day, sunlight directly hits the Tropic of Capricorn. The sunlight is most inclined to the Northern Hemisphere, and the sun's altitude angle is the smallest. It is the day with the shortest daylight and the longest night in all parts of the Northern Hemisphere.
In addition, the Winter Solstice is not only an important solar term among the 24 solar terms, but also a traditional festival for ancestor worship among the Chinese people. The Winter Solstice is one of the eight festivals of the four seasons and is regarded as a major festival in winter. In ancient times, people said that "the Winter Solstice is as important as New Year's Day." In the southern regions, there is a custom of worshiping ancestors and feasting on the winter solstice; in the northern regions, there is a custom of eating dumplings on the winter solstice every year.

What is the origin of the winter solstice?

The Winter Solstice is one of the “24 solar terms”. The "Twenty-Four Solar Terms" and the "Twelve Months" are the basic contents of the Ganzhi calendar, which was established in ancient times (or ancient times). According to ancient books, it was the Emperor of Heaven who first created the names of the Heavenly Stems and Earthly Branches to determine the year. The "Twenty-Four Solar Terms" are specific festivals in the Ganzhi calendar that represent seasons, phenology, climate changes, and establish the "Twelve Months". In ancient times, the "24 solar terms" were determined by the direction of the top of the handle of the Big Dipper. When the handle points to the "Zi" position in the north, it is the winter solstice.
The names of the 24 solar terms were first seen in the Western Han Dynasty document "Huainanzi·Tianwenxun". During the reign of Emperor Wu of Han, the 24 solar terms were incorporated into the Taichu Calendar as a supplement to the calendar to guide agricultural activities, and the "Pingqi method" (i.e. average time method) was used to divide the solar terms. The "Pingqi Method" uses shadow measurement to determine the shortest day in the Yellow River Basin as the winter solstice, and divides the date between the winter solstice and the next winter solstice into twelve equal parts, called "Zhongqi", and then divides the date between adjacent "Zhongqi" into twelve equal parts, called "Jieqi". On average, there is one "Zhongqi" and one "Jieqi" per month, collectively known as the "Twenty-Four Solar Terms". The "Pingqi Method" is a time averaging method. The interval between each solar term is about 15 days, and the calculation does not take into account the uneven speed of the sun's movement on the ecliptic. The solar terms divided by the "Pingqi Method" begin with the Winter Solstice and end with the Heavy Snow.

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