What's the meaning of seven or nine on the calendar?

The seventh and ninth days in the calendar are the fifty-fifth to sixty-third days of the winter solstice of the lunar calendar.

The calculation method of counting nine cold days is to count from the non-healing day from winter to Sunday (from winter to the future, the first non-healing day is called "over nine", which means the beginning of cold), and every nine days are called nine, the first nine days are called "19", the second nine days are called "29", and so on until "99", that is, the ninth nine days. At this time, "nine peach blossoms bloom" and "spring is deep and the sun is warm".

On July 9 and August 9, the solar terms have reached the season of "rain" and "earthquake". At this time, the weather turned warmer, the frozen river began to melt in a large area, and people could hear the sound of running water again. The geese also began to return to the north, collect firewood and build nests, settle down and start a new season of life.

Extended data

The calculation of "three or nine days" is an experience summed up by the ancients on the basis of generations of production and life practice, using some ecological reflections and weather signs in nature. It is quite scientific and still plays a guiding role in the arrangement of people's production and life, so it has been popular and widely circulated in people's words and behaviors.

With the development of history, people all over the country have compiled various proverbs, ballads and jingles according to different climatic conditions, landscape characteristics, agricultural phenology and customs. There are several nine songs all over the country, but the lyrics are slightly different.

The widely circulated "99-year-old Quhan Song" said:

"1929 don't make a move,

Walking on the ice in 3949,

59 and 69, looking at the willows by the river,

The river froze in' 79, and swallows came in' 89.

99 plus 19, plowing cattle everywhere. "