75. At 0327 ZT on 29 May, your DR position is LAT 25° 00' N, LONG 64° 15' W. You are steering 270° T at a speed of 13.6 knots. What is the zone time of sunrise?

Using the Nautical Almanac for sunrise at the given latitude and longitude, correcting for the ship's westward run and time zone, results in a sunrise zone time of approximately 0529.