When is the weather in Hangzhou? May 20 15.

20 15 Hangzhou June 14 when it entered the plum blossom, it was the third day after mango seeds. According to China's almanac, the beginning and end of mildew rain are called "mildew" and "mildew". 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.

20 15 formula for calculating plum blossom time

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.