five o'clock
Without his headpiece , Frank could not hear the words and kept his eyes to the fore , as he swung now above the line of the shore . Jack , however , also was straining his eyes to the rear , and he snatched the glasses from Bob and trained them on the plane . True enough , Higginbotham was rising . It was not yet five o'clock when , the airplane safely stowed away and the doors of the hangar closed and locked , the boys once more stood on the skidway . `` What say to a plunge before we go up to the house ? '' proposed Frank . `` There 's nobody to see us .