Which months are the coldest in a year?
The coldest three months of the year.
The coldest month is in winter, that is, "October, November and December" of the lunar calendar. "Winter Moon" is another name for November of the lunar calendar, also known as Gu Yue, Long Moon, Late October and Midwinter. We often say "cold winter" refers to the three months before the Spring Festival. These three months are called: October-cold month; 1 1 month-winter month; December-the twelfth month.
Together, these three months are "winter months", the coldest three months of the year. So, why is November of the lunar calendar called the winter moon?
Regarding the origin of the winter month, according to the lunar calendar, the solar term from the winter solstice must appear on 1 1 month of the lunar calendar. If there is any error, it will be adjusted by setting leap month. If there is no leap month in a year, 1 1 month in the lunar calendar is the first 1 1 month in a year, so it is also called winter month because 1 1 month in the lunar calendar is the month of winter solstice in the 24 solar terms.
According to "Historical Records", "The best way for the Yellow Emperor to get a treasure tripod is to be strong in old age, to win the winter solstice, to win the discipline of heaven and to start all over again." This shows that as early as the Yellow Emperor era, the winter solstice was regarded as New Year's Day, which is why the 1 1 month of the lunar calendar was called the winter month.
In addition, the winter month is the November of the lunar calendar, also known as Gu Yue, Changyue, Late October and Midwinter. During the Zhou Dynasty, the solstice of winter was once Nian, that is, a year in a year and New Year's Day. Later, "the winter solstice is as big as a year", because "the winter solstice is a year", so the ancients called the month where the winter solstice is located the winter month. However, with the passage of time and the change of the calendar, the name of the winter solstice festival, which was once an annual festival, has gradually been forgotten by people.
Some people confuse the winter moon with the winter solstice. In fact, this is also a difference: the winter moon is the lunar month, while the winter solstice is the solar term, the 22nd of the 24 solar terms.
Is March 9 the coldest time?
Every year, when the solstice of winter comes, it begins the nine-day cold night. Counting backwards every nine days from the winter solstice, the first nine days are called "Yijiu", the last nine days are called "Erjiu" and the last nine days are called "Sanjiu", and so on, counting until the ninth nine days, that is, after 998 1 day, and then the vernal equinox solar terms will arrive in nine days.
In ancient times, there were limited ways to keep warm from the cold. In order to survive the long winter, the working people amuse themselves by counting nine. When the singing of "Count 99" is over, the spring season is coming again.
As the saying goes, "It's hot in dog days, but it's cold on March 9th", but is March 9th really the coldest time in a year? China Weather Network has counted the average temperature during the "nine counties" in recent 30 years. It is not difficult to see that March 9 and April 9 are indeed the coldest time periods in a year, but March 9 beat April 9 by a slight advantage and became the coldest time period in a year.
After 9 May, the temperature in the whole country showed an obvious upward trend, especially after 9 June (beginning of spring), many places in the south began to warm up, and willows were green along the river. At this time, the pace of spring began to advance from south to north. By the end of the Ninth Five-Year Plan, the pace of spring has approached the middle and lower reaches of the Yangtze River, and nearly one third of the country will be included in the spring territory.
It's hot in three volts and cold in three or nine.
According to the statistics of the average temperature in recent 30 years, nearly four fifths of the land in China has the coldest time in March and April. After the solar term of the winter solstice, with the decrease of solar radiation heat, the heat stored on the ground is also decreasing day by day. During March 9, most of the north entered the coldest period of the year. In April and September, most of the south is cold, including the eastern part of the south of the Yangtze River and most of southern China.
China is a vast country with obvious climate differences, so the coldest time around did not appear in 3949. In most parts of Yunnan and southeastern Tibet, 1929 entered the coldest period of the year. On the southeast coast of China and the north-central part of Hainan Island, the coldest weather appeared on May 9th.