six o'clock
The headlands of North Greenland lay before us . Then the fog lifted a little , broke away in places . The water became visible -- drift and slush-ice of the Spring , with lines of open water here and there . And then the fog closed down again , lifting momentarily at six o'clock when we passed over the north-western tip of Greenland . The tower there gave us its routine signal , which we answered in kind . There was little traffic along here ; a few local cars in the lowest lanes . Shortly after six , when we were above Grantland , another of the great trans-Arctic passenger liners went over us .