On 19 July your 1500 ZT DR position is LAT 28°25.0'N, LONG 120°28.0'W. You are on course 233°T at a speed of 10 knots. What will be the zone time of sunset at your vessel?
Official USCG Answer & Rule Citation
Correct Answer: Option C — 1901
Using standard Bowditch interpolation for date and latitude from the Nautical Almanac, combined with the longitude time correction for the vessel's DR position, produces a precise zone time of sunset of 1901.
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