about one o'clock
But their carousings generally ended at midnight , the black said , and then they fell into a heavy sleep . They did not post guards , but since they knew of the presence of the white men in the airship , they might do it this time . `` Well , we 've got to take our chance , '' decided Tom . `` We 'll start off from here about one o'clock , and I 'll send the ship slowly along . We 'll get right over the hut where the captives are , if possible , and then descend . I 'll manage the ship , and one of you can work the electric rifle if they attack us . We 'll make a dash , get Mr. and Mrs. Illingway from the hut , and make a quick get-away . ''