About four o'clock
`` You say , '' he said , `` that he 's likely to call here to-morrow morning . '' `` He 's almost certain to . Except the day when he went to meet you at Donard he has never missed paying me a visit . '' `` About four o'clock , I suppose , is his regular hour ? '' `` He has no regular hour , '' said Miss King . `` He 's quite unconventional . He may drop in for breakfast , or he may turn up suddenly while we 're dressing for dinner . ''