At 0915 zone time on 7 April you depart San Francisco, LAT 37°48.5'N, LONG 122°24.0'W (ZD +8). You are bound for Kobe, LAT 34°40.0'N, LONG 135°12.0'E, and you estimate your speed of advance at 17 knots. The distance is 4,819 miles. What is your estimated zone time of arrival at Kobe?

Question

At 0915 zone time on 7 April you depart San Francisco, LAT 37&deg;48.5'N, LONG 122&deg;24.0'W (ZD +8). You are bound for Kobe, LAT 34&deg;40.0'N, LONG 135&deg;12.0'E, and you estimate your speed of advance at 17 knots. The distance is 4,819 miles. What is your estimated zone time of arrival at Kobe?

Accepted Answer

Option C: 2143, 19 April. Calculate the total travel time (4819 miles / 17 knots = 283.47 hours). Convert the departure time to UTC and add the elapsed time. Adjust for the destination time zone (ZD -9). The resulting arrival is 2143 on 19 April, accounting for the International Date Line crossing.