How many days is the difference between the summer heat and the summer heat?

1, difference between light summer heat and heavy summer heat 15 days.

2. Great summer heat, one of the 24 solar terms, is the last solar term in summer. Every year from July 22nd to 23rd in Gregorian calendar, the solar sun arrives at120th, which is a solar term in summer. Like summer heat, summer heat is also a festival reflecting the degree of summer heat, which means the weather is extremely hot.

3. Slight summer heat is the 11th solar term among the 24 solar terms in the lunar calendar and the fifth solar term in summer, which marks the official start of the last month of summer.