On 26 July your 1030 ZT DR position is LAT 18°25'N, LONG 51°15'W. You are on course 231°T, speed 15 knots. Determine your 1200 position using the following observations of the Sun. Illustration NP-0100
Zone Time GHA Declination Ho 1228 50°23.5' N 19°21.9' 88°14.3' 1236 52°23.5' N 19°21.8' 88°29.0'