On 10 April, your 1630 ZT DR position is LAT 21°03.0'N, LONG 63°11.0'W. You are on course 324°T at a speed of 22 knots. What will be the zone time of sunset at your vessel?
Official USCG Answer & Rule Citation
Correct Answer: Option D — 1833
Find the tabular sunset time for the DR latitude in the Nautical Almanac. Interpolate for the date and longitude. Adjust for the vessel's movement on course 324°T at 22 knots, which moves the vessel away from the sunset line, resulting in a later zone time of 1833.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.