05:27:53
`` How soon will Space Lab One reach the northernmost point of her present orbit and begin a swing to the south ? '' he asked . Mike looked puzzled , but the Cow answered , `` In ten minutes , thirty-seven seconds . At precisely 05:27:53 ship time . '' `` I think , '' said Ishie , `` we 'd best put a switch on our magnetic field so that we can reverse the field and the thrust . '' `` Why ? '' asked Mike .