2 10 18 when is spring?

Beginning of spring in 20 18 is 05: 28: 25 on February 4th, 201February19th, 20 17. "beginning of spring" is the beginning of the four seasons, which means the past of the old winter and the arrival of the new year. On February 4th or 5th every year, when the sun reaches 3 15 degrees, it is beginning of spring.

"Twenty-four solar terms": "The first month festival, the beginning, the beginning ... long summer, autumn and winter are the same." The ancient "Li Si" refers to the beginning of spring, summer, autumn and winter, and its agricultural meaning is "planting in spring, growing in summer, harvesting in autumn and storing in winter", which summarizes the whole process of the relationship between agricultural production and climate in the middle and lower reaches of the Yellow River.

China has a vast territory, complicated geographical conditions, great climate difference and different seasons. Therefore, although "Li Si" can reflect the climate characteristics of the four seasons in the middle and lower reaches of the Yellow River, the specific climate significance of "Li Si" is not significant and cannot be applied to all parts of the country. The date of soil thawing in the middle and lower reaches of the Yellow River began in early spring. The first weather in spring should be "east wind thawing", which is basically the case.

In China's climatology, beginning of spring is usually defined as a day when the daily average temperature is stable above 10℃ every five days, which is inconsistent with the meaning of beginning of spring in the middle and lower reaches of the Yellow River. In late February, only South China really entered the spring. But this division method is more practical. After beginning of spring, the temperature rose, and most parts of the country began a busy spring ploughing season. Since the Qin Dynasty, beginning of spring has been the beginning of spring in China.