four o'clock
`` Day after to-morrow . '' `` Then you will give me one afternoon for a sail on the river to say good-bye and thank you for what you have done for me and mine ? '' She hesitated , laughed , and refused . `` To-morrow at four o'clock I 'll call for you , '' he said firmly . `` If there 's no wind , we can drift with the tide . '' `` I will not have time to go . '' `` Promptly at four , '' he repeated as he left .