one o’clock
`` What 's one session , Dicky ? '' Maida asked . `` Why , when it 's too stormy for the children to go to school in the afternoon the fire-bells ring twenty-two at quarter to twelve . They keep all the classes in until one o'clock though . '' `` Oh , that 's why they do n't come out , '' Maida said . At one o'clock the umbrellas began to file out of the school door . The street looked as if it had grown a monster crop of shiny black toad-stools .