Which provinces in China are the 24 solar terms applicable to?

Twenty-four solar terms are applicable to Huanghuai area, such as Henan, Anhui, Jiangsu, Shandong and other provinces.

Twenty-four solar terms started from the four solar terms of mid-spring, mid-summer, mid-autumn and mid-winter in Shang Dynasty, passed through eight solar terms in Zhou Dynasty and reached the twenty-four solar terms in Western Han Dynasty. Subsequent dynasties have corresponding details to supplement and improve. However, judging from the time node of its emergence and development, people's activity center at that time was in Huanghuai area. Generally speaking, the 24 solar terms are summed up by combining the characteristics of the four seasons in this area with farming.

Today, the climate change for thousands of years and the abnormal weather that occurs from time to time every year, as well as the vast territory and complex terrain of the country, make the solar terms less accurate and significant in many places, and the impact on people's production and life is gradually decreasing, but it still provides an important reference for our food, clothing, housing and transportation.