On 16 August your 1600 ZT DR position is LAT 26°17.0'N, LONG 165°17.0'E. You are on course 301°T at a speed of 15 knots. What will be the zone time of sunset at your vessel?

Correct Answer: Option A — 1838

Consult the Nautical Almanac sunset tables for 16 August at the vessel's latitude of 26°17.0'N. Apply the interpolation for latitude and the correction for longitude relative to the zone meridian. The resulting calculation confirms the local zone time of sunset is 1838 for the vessel's position.