The summer heat is the 11th solar term of the 24th solar term in the lunar calendar and the fifth solar term in summer, which indicates the official start of the The Last Month Of Summer season. Summer heat is the last solar term in summer, which falls between July 22nd and 23rd of the Gregorian calendar every year.

On July 7th or 8th every year, it is considered as a slight summer heat when the sun reaches the longitude of the yellow meridian15.

Great summer heat is also a season that reflects the degree of summer heat, and great summer heat means that the weather is extremely hot.