a quarter to
twelve
`` I suppose you will come , '' said Mills suddenly . `` I really do n't know , '' I said . `` Do n't you ? Well , remember I am not trying to persuade you ; but I am staying at the Hôtel de Louvre and I shall leave there at a quarter to twelve for that lunch . At a quarter to twelve , not a minute later . I suppose you can sleep ? '' I laughed .