What's the date today

A: What's the date today?今天几号了？ B: It's September 9th.今天是9月9日。A: Oh, is it Teacher's Day tomorrow?奥，明天是不是教师节呀？B: Yes.Are you free tomorrow?Let's give some flowers to our teachers!是的。明天你有空吗？让我们给老师们送一些花吧！A:Good idea. 好主意！