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?
Official USCG Answer & Rule Citation
Correct Answer: Option D — 1745
Bowditch formulas for celestial twilight and sunrise/sunset dictate applying local longitude corrections to the tabular time in the Nautical Almanac. For this position and date, the calculation results in 1745 zone time.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.