A classmate has a birthday this year. Lunar calendar 7.28. If it is changed to the solar calendar, it will be that day. Today, there are two June in leap year. She was too old in early June.

This year is 9 18, and 24 solar terms usually has 1 section and one breath every month, so 24 solar terms has 12 section and 12 breath. In the lunar calendar, if there are only festivals and no breath in a month, there will be a leap month, and there will be a solar term next month, so there will be more than 50 days in this month.