midnight
Each boy put his share in the oil skin water-tight money belt that had been one of Mr. Leffingwell 's many gifts . Their money went easily into a much smaller and less complicated carrier that each boy wore around his neck . Then , feeling ready for any emergency , they hurried back to the dark and silent deck . They stayed up until midnight . Then the wind started up , increasing in violence until the chilled watchers took refuge below . The boys turned in . It seemed about fifteen minutes when Porky sat up .