twenty minutes to twelve
`` None , sir , '' replied the prisoner . Came Private Bates next , and Sir Terence proceeded to question him . . `` You said in your evidence that Captain Tremayne arrived at Monsanto between half-past eleven and twenty minutes to twelve ? '' `` Yes , sir . '' `` You told us , I think , that you determined this by the fact that you came on duty at eleven o'clock , and that it would be half-an-hour or a little more after that when Captain Tremayne arrived ? '' `` Yes , sir . ''