four o’clock
`` When I think it advisable I shall come to see you again . '' `` Are you an American or a German or an Englishman ? '' `` I am whichever I choose for the moment , '' was the cool response . `` If you doubt my credentials , I can perhaps establish myself in your confidence by repeating the conversation which took place between you and the Kaiser on the terrace of the Imperial Palace at Potsdam between three and four o'clock on the afternoon of April the seventh . You gave the Kaiser a little character sketch of your colleagues in the Cabinet , and you treated with ridicule the bare idea that one or two of them , at any rate , would ever consent -- '' `` That will do , '' the Minister interrupted hoarsely . `` Just as you will , '' the other observed . `` I wish you good-day , sir .