three o'clock
`` You do n't know anything about him , Mary . And I agree with Porter -- a man 's bank reference is n't sufficient for social recognition . And anyhow he may not have the right kind of clothes . '' `` We are to have dinner at three o'clock , '' she said , `` just as mother always had it on Thanksgiving Day . If you do n't want me to ask Roger Poole , I wo n't . But I think you are an awful snob , Barry . '' Her eyes were blazing .