twelve o'clock
He worked slower than he had on the ground , fumbling with the heavy gloves and cursing mightily . His voice rambled on , warning him of obstacles and reminding him about minor points that could give trouble . He listened carefully , discarding each suggestion . Floating near the twelve o'clock auxiliary , Mac peered at each tubing connection , tugging and twisting . `` Wait a minute , '' he said . His light flashed out at the motor , riding perched on its swivel , limned against cold , hard points of light that were the stars . His heart gave a bound .