When is May 9th? Introduction on May 9th.

1, 59 is the solar term in the middle of China's ninth number, 5969 is the willow by the river, and 5938+0 is usually a few days between October and February.

2. Jiujiu, also known as Winter Jiujiu, is a folk solar term of the Han nationality. Count nine cold days, that is, from the solstice of winter, count a "nine" every nine days until the "99" of 81 days, and the weather will warm up.

3. Calendar In China, there are not only lunar calendars and solar calendars, but also dry calendars (also called yin-yang calendars). Every year, the winter solstice of the twenty-four solar terms begins to count nine, and it really enters the cold weather. The so-called nine is nine days and nine years, which are called 19, 29, 39, 49, 59, 69, 79, 89 and 99 respectively.