How many days after the slight summer heat is the great summer heat?

Generally, the summer heat is 15 days after the summer heat.

Every year around July 7th, when the sun reaches longitude 105, it is called "Little Summer" solar term. "Twenty-four solar terms": "Summer is also hot, divided into small summer, small at the beginning of the month, large in the month, and still small today." Summer is hot. The ancients thought that the summer heat period was not the hottest time of the year, so it was called summer heat.

Every year around July 23rd, when the sun reaches longitude 120, it is called "Summer" solar term. "Big Summer", like "Little Summer", is a festival that reflects the degree of summer heat, and "Big Summer" means extremely hot. "Twenty-four solar terms": "Summer, summer is also divided into sizes, the early month is small, the month is big, and it is still hot today."

The summer solar term is the hottest period of the year, just before and after the "middle volt" of the "dog days".