On what day does every day start in 2022?

In fact, the criteria for entering Mei are very complicated, but generally speaking, there are large rainfall areas in the middle and lower reaches of the Yangtze River and South China. There is a subtropical high near 20 degrees north latitude in the south, which prevents the rain area from going south, causing the rain area to wander back and forth in the middle and lower reaches of the Yangtze River, causing long-term heavy rainfall. This weather feature can almost be considered as "plum blossom". According to the analysis of atmospheric circulation characteristics, the subtropical high over the Pacific usually begins to strengthen in June, and by mid-June, the subtropical high over South China is stable, and the warm and humid airflow in the southwest on the north side extends to the south of the Yangtze River. At this time, the influence of cold air in the north is not to be outdone. The cold air in the north and the warm and humid air in the south meet in the middle and lower reaches of the Yangtze River, forming a narrow rain belt. At this time, the plum blossoms in the south of the Yangtze River have matured, and the people call the continuous rainy weather in this period "Meiyu", which generally refers to. In mid-July, with the subtropical high strengthening again, the Meiyu belt moved northward to the north of Huaihe River, that is, "Meihua". After plum blossom, it begins in midsummer and enters the dog days. Because the atmospheric circulation changes differently every year, the "entering plum" and "leaving plum" are different every year.

Meteorologically speaking, the rainy weather in early summer lasts for more than 6-7 days, and the first day when the daily average temperature reaches 22 degrees or above is generally called plum blossom day, and even the day when the rainy weather ends is also called plum blossom day.

The so-called "plum blossom" time on the calendar is relatively fixed, which is calculated according to the method of "counting days with branches and counting days with branches". It calls the first "C" day after "mango seed" plum blossom, and the first "non-"day after "summer heat" plum blossom. The time of "entering Mei" is always between June 6th and June 15, and the time of "leaving Mei" is between July 8th and July 19.

Therefore, the meteorological "plum blossom" and the calendar "plum blossom" are inconsistent in time distribution, but they may happen to be together in some years.