Heading into January 2024, the temperature is still warm as spring, and the temperature this month is significantly higher than the same period in previous years. Now it has entered the coldest time of the year "39", and there is a folk saying "3949, frozen to death of the old dog".
So, when exactly will the coldest time of the year come?The Spring Festival in 2024 will be in the "How Nine"?The answer is about to be revealed, so let's take a look!
Although the popular song "Counting Nine Songs" is widely known in China, many people may not know the starting point of this counting nine cold days and when the coldest time of the year is.
Although the origins of the Song of Nine are difficult to trace and there are different versions from place to place, they all have one thing in common: they all start counting nine on the day of the winter solstice.
Every nine days is counted as one "one nine", followed by "the first nine", "twenty-nine", "three nine", and so on until "ninety-nine". After the 81-day "counting nine cold days" have passed, the weather will turn from cold to warm. The ancients called these two months "counting nine cold days", or "nine miles of heaven".
There is also a saying among the folk that "counting nine cold days, cold in Sanjiu", and "hot in Sanfu, cold in Sanjiu". Although the winter solstice solar term is now used as the starting point for the number nine, there is another saying in the past, that is, "the summer solstice is three Geng, and the winter solstice is the number nine", that is, the third "Geng day" after the summer solstice solar term is ambushed, and the first "non day" after the winter solstice solar term is only counted nine.
The older generation said that this method is the most accurate way to calculate the number nine cold days, and if it is used to count nine, then the number nine in 2023 will only enter the "one nine" from December 30.
However, it is now simplified, because many people do not know much about the Ganzhi calendar, and the number nine time calculated by this method fluctuates greatly from year to year, and it is not easy to remember and master.
So now the calendar starts counting nine on the winter solstice, and today we will use the winter solstice (December 22) as the starting point for counting nine. So, why is "Sanjiu" the coldest time?Does that make sense?
In ancient times, although the ancients could not explain why it was the coldest on the "Sanjiu" day, and there were no more advanced instruments to accurately measure it, the wise ancestors still keenly observed this phenomenon and summarized it as a agricultural proverb: hot in Sanfu, cold in Sanjiu, which tells us that this time is the coldest of the year.
In fact, there is a scientific basis behind this statement. We all know that the Earth absorbs the sun's heat during the day and releases it at night. In summer, when the temperature is high, it absorbs more heat during the day, and some of it is released at night.
But more heat is absorbed than it is released, so some heat accumulates, and over time, more and more heat accumulates, and when it comes to the "dog days", it reaches a maximum, so it is the hottest time of the year during dog days.
With the arrival of autumn and winter, because the temperature in winter is low, so that the heat absorbed during the day is less, but the heat emitted at night is a lot, it can be said that the absorption is much smaller than the heat emitted, and a large amount of accumulated heat will be gradually dispersed.
Especially with the arrival of the winter solstice, the direct point of the sun quietly shifts south, and the daytime heat absorbed by the northern hemisphere begins to decrease. However, the heat stored in the summer still protects us from some of the cold.
But over time, the stored calories are gradually depleted. By the time of the day, the remaining calories are almost exhausted, making it the coldest time of the year. So when is the coldest time of the year?
It is estimated that some netizens have also discovered that this year's three nine days are a bit special, that is, they are not as cold as in previous years, in fact, the weather forecast has also reported, this year's dog days are relatively weak because of the cold air, and the impact is not large, and the temperature in many places has not fallen but has risen. In this case, is it not suitable to "be cold in Sanjiu"?
In fact, this sentence of the ancestor is mainly applicable in the northern region, generally in the northern region, it is colder than the forty-ninth day, and in the southern region, it is the coldest time when the forty-ninth day is reached. For example, during the March 9 period this year, the temperature in the southern region was higher than in previous years, and it was still colder in the northern region.
According to the test of historical data, the coldest time of the year generally occurs in mid to late January. The cold in the north came earlier, around mid-January, after the Xiaohan solar termIn the south, it is slightly later, usually in late January, after the last of the 24 solar terms, the Great Han Solar Term.
And it has not yet entered the middle of January, and it is just the first day of Sanjiu, and it is a bit too early to say that this year's Sanjiu is not cold through the temperature of one day.
If nothing else, the coldest time of 2024 is likely to occur after mid-January. However, friends in the south may have to wait a little longer, and your cold may be in the "49th", that is, in the second half of January.
In addition, the Spring Festival in 2024 will start on February 10 (Spring Festival), which is already the sixth day of June Nine, and it is about to enter July Nine. If nothing else, then the Spring Festival in 2024 will not be too cold.