76. At 0400 zone time on 24 June, your DR position is LAT 23° 10.0' N, LONG 085° 33' W. You are steering 295° T at a speed of 10.0 knots. What is the zone time of sunrise?

Sunrise occurs at 0458 zone time. This was determined by finding the local mean time of sunrise from the Nautical Almanac for the given latitude, then correcting for the longitude difference from the time zone meridian. The ship is east of the meridian, requiring a subtraction of 18 minutes from the local mean time to obtain the zone time.