89. 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?

Applying the correct zone time adjustment (+8 hours) and longitude correction from the Nautical Almanac sunset tables results in a sunset time of approximately 1901 zone time at the vessel's DR position.