143. At 1544 zone time on 5 October your DR position is LAT 25° 00' N, LONG 60° 15' W. You are steering 270° T at a speed of 6.8 knots. What is the zone time of sunset?

The Nautical Almanac provides sunset time in local mean time (LMT) at the ship's longitude. Converting LMT to zone time requires accounting for the longitude in time and the zone description, resulting in a sunset time of approximately 1745.