Is there a difference between 69 days and 39 days?

To know the difference between the two, we must first make clear the specific time points of March 9 and June 9.

According to the method of counting nine commonly used by predecessors, counting nine is on the day of winter solstice, which means that winter solstice begins on September 19.

The solar term of winter solstice is June 265438+February 2 1, so September 19 starts from June 265438+February 2 1, and nine days is nine days, so September 19 starts from June 265438+February 2/. March 9th is 65438+1October 8th ~ 65438+1October 6th, and April 9th is 65438+1October17 ~ 65438+/kloc-.

Therefore, in the order of the above nine numbers, the time on March 9th is 65438+1October 8th to 65438+1October 16, and the time on June 9th is February 4th to February 12.

As we know, the solar term in beginning of spring is the beginning of spring, and the biggest climate feature is that the temperature rises and everything recovers, which opens the season of warm spring in bloom. From this point of view, the weather is relatively warm after beginning of spring and before the first day of the first month. The Spring Festival will enter on July 9th, as the saying goes, "Seven or Nine Rivers Open". As the temperature rises, the ice in the river melts.

So Sanjiu is colder than Liujiu.