twelve o'clock
He was wearing a peaked cloth cap with a gold eagle upon it , a short jacket of blue serge , with ample trousers to match , and a neat pair of brown shoes ; while his linen would have touched the heart even of the most hardened _ blanchisseuse _ of the city . He had a bright , open face , marred only by a peculiarly irritating movement of the eye , which told of a nervous disposition ; and there was something refined and polished in his voice , which I heard almost at once . `` Good-morning to you , '' he said ; `` I hope you have slept well ? '' `` I have never slept better ; it must be twelve o'clock , is n't it ? '' `` It 's exactly half-past three , American time . I did n't wake you before , because sleep is the best medicine in your case . I 'm a doctor , you know . ''