What month is Huangmei Day in Shanghai?

Huangmeitian is between the middle of June and the middle of July.

It is rainy in Huangmei. In early summer, there are often long rainy days in the middle and lower reaches of the Yangtze River. At this time, the utensils are easy to be moldy, so it is called "mildew rain" or "mildew" for short; Also known as "Meiyu" or "Huang Meiyu", plums in the south of the Yangtze River are yellow and ripe.

It is recorded in China's almanac that there is mildew rain all day: it is called "mildew" at the beginning and "mildew" all day long. The first day after the awn is planted, it will be moldy, but it will not be moldy on the first day after the light summer. The mold will enter from June 6th to 15, and will be released from July 8th to 19.

Extended data:

For example:

On June 6, 2006, mango seeds fell and entered Mei on the same day. July 17 coincides with the weekend after the summer heat, so the plum blossom date in 2006 is July 17. Huangmeitian ***42 days. The specific heart algorithm is as follows.

Enter the formula of plum blossom day: d =(7-Y)Mod 10, where Y=(5 (odd years)+[2 digits after the year ]) mod 10. In 2006, Y=0+[6/4]= 1 and D=7- 1=6, so it was June 6th. The formula is: D= 12-Y, Y=(6×5+[6/4])Mod 12=7 (see plum blossom entry for details), and D= 12-7=5, because July 5th is before light summer.

Baidu Encyclopedia-Huangmeitian