six o'clock
They rode steadily on , and day was just breaking when he exclaimed : `` There are some buildings opposite . That must be Khartoum . We shall be opposite Omdurman in another hour . '' Soon after six o'clock , they rode down to the river bank opposite the town ; and , in answer to their signals , a large native boat was rowed across to them . After some trouble the camels were got on board , and in a quarter of an hour they landed . `` Take the camels up to my house , Zaki . I must go and report myself , at headquarters . ''