When is the big cold day?

The great cold is 65438+20231October 20th.

The 24th and last solar term among the 24 solar terms in the Great Cold. The time point is between 65438+1October 20 -2 1 in the Gregorian calendar every year, and it is a great cold when the sun reaches 300 degrees of the yellow meridian.

Great cold, like slight cold, is also a solar term indicating the cold weather. Great cold means extremely cold weather. During the great cold solar term on March 9 and April 9, cold waves frequently go south, which is the coldest season of the year with strong wind and low temperature.