two o'clock
`` I can let you know by two o'clock whether I can go , '' and as she spoke she gathered up her gloves and bag and settled her trim hat by a glance at the long mirror across the room . `` What -- what did you say ? '' demanded David aghast in a second . `` If you think for one minute that I 'm going to stand for -- '' `` But you must remember that my business engagements must always be settled before I can make social ones -- at two o'clock then ! Good-by , Caroline , dear , such a comfy night under your care ! I 'm going to stop in the library to speak to the major and then on to the guild if any one calls . Here 's to you both ! ''