On 25 December your 0330 ZT DR position is LAT 25°15.0'N, LONG 32°16.0'W. You are on course 145°T at a speed of 20 knots. What will be the zone time of sunrise at your vessel?

Question

On 25 December your 0330 ZT DR position is LAT 25&deg;15.0'N, LONG 32&deg;16.0'W. You are on course 145&deg;T at a speed of 20 knots. What will be the zone time of sunrise at your vessel?

Accepted Answer

Option D: 0647. Per Bowditch celestial navigation standards, sunrise time is derived from local apparent noon minus the semi-duration of daylight. Apply latitude, solar declination, longitude corrections, and account for dead reckoning position updates during the intervening hours.

On 25 December your 0330 ZT DR position is LAT 25&deg;15.0'N, LONG 32&deg;16.0'W. You are on course 145&deg;T at a speed of 20 knots. What will be the zone time of sunrise at your vessel?

On 25 December your 0330 ZT DR position is LAT 25°15.0'N, LONG 32°16.0'W. You are on course 145°T at a speed of 20 knots. What will be the zone time of sunrise at your vessel?