twelve o'clock
As the door closed behind them Estralla clasped Sylvia 's hand . `` Wat dat clock say ? '' she asked ; for one of the city clocks was striking the hour . `` It 's twelve o'clock , '' answered Sylvia . `` Oh ! My lan ' , Missy ! Dat 's a terrible onlucky time fer us to be out , '' whispered Estralla .