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?

Correct Answer: Option B — 1745

Determine the DR position at the approximate time of sunset. Use the Nautical Almanac to find the tabular sunset time for the latitude. Apply the longitude correction to convert the tabular time to the vessel's zone time, which confirms the correct time is 1745.