twelve o'clock
`` I trust that you will endeavour to curb your exuberance of spirits . This is a very grave matter , and anything like levity would be altogether out of place . `` The letter says that the stage leaves the Bell Tavern at four o'clock . '' Bob replied , gravely , that he would be there in time ; and went off to his work again , until twelve o'clock . When he arrived at the admiral 's , at a quarter to six , a lad in midshipman 's uniform came rushing out into the hall . `` Hulloa , Bob ! '' `` Why , Jim !