1999 is the same day as the first summer vacation?

The reason why it is impossible is not what ssk 107zh said. According to the definition, no matter which year, the first lodging refers to the third Geng day after summer, that is, the shortest distance from summer is 20 days, the longest distance from summer is 29 days, and summer is 17 days, far less than 20 days. Therefore, the same day.

Slight heat: July 7th, the first autumn begins on July 17.