"Local time," stated Paul.  "If we had not done so we could not have arranged the schedule with any accuracy at all, as regards daylight and darkness and the lapping of time.  With our watches set to New York time, we might expect to land at a station in broad daylight, only to find that we were really coming in after dark.  Another thing: Our figuring showed us that the lappages of time, all added together, exactly totaled one day of twenty-four hours, which we gain by traveling eastward.  So, while the schedule on a calendar at home would only show ten days which we would be gone, we would in reality be away one day longer, or eleven."