At 0820 zone time on 10 April you depart Yokohama, LAT 35°27.0'N, LONG 139°39.0'E (ZD -9). You are bound for Honolulu, LAT 21°18.5'N, LONG 157°52.2'W (ZD +10) and you estimate your speed of advance at 17.5 knots. The distance is 3,397 miles. What is your estimated zone time of arrival at Honolulu?

Question

At 0820 zone time on 10 April you depart Yokohama, LAT 35&deg;27.0'N, LONG 139&deg;39.0'E (ZD -9). You are bound for Honolulu, LAT 21&deg;18.5'N, LONG 157&deg;52.2'W (ZD +10) and you estimate your speed of advance at 17.5 knots. The distance is 3,397 miles. What is your estimated zone time of arrival at Honolulu?

Accepted Answer

Option B: 1527, 17 April. Transit time is 194.11 hours (8 days, 2 hours, 7 minutes). Adding this to the departure time of 0820 on 10 April, then adjusting for the zone time change from ZD -9 to ZD +10 (a 19-hour difference), results in an estimated arrival of 1527 on 17 April.