At 0915 ZT on 26 July you depart Yokohama, LAT 35°27.0'N, LONG 139°39.0'E (ZD -9). You are bound for Seattle, LAT 47°36.0'N, LONG 122°22.0'W, and you estimate your speed of advance at 14 knots. The distance is 4,245 miles. What is your estimated ZT of arrival at Seattle?

Question

At 0915 ZT on 26 July you depart Yokohama, LAT 35&deg;27.0'N, LONG 139&deg;39.0'E (ZD -9). You are bound for Seattle, LAT 47&deg;36.0'N, LONG 122&deg;22.0'W, and you estimate your speed of advance at 14 knots. The distance is 4,245 miles. What is your estimated ZT of arrival at Seattle?

Accepted Answer

Option A: 0728, 7 August. Time of passage is calculated by dividing total distance by speed of advance, yielding 303.2 hours. Adding elapsed time and accounting for zone description changes across the International Date Line establishes arrival precisely at 0728 on 7 August.

At 0915 ZT on 26 July you depart Yokohama, LAT 35&deg;27.0'N, LONG 139&deg;39.0'E (ZD -9). You are bound for Seattle, LAT 47&deg;36.0'N, LONG 122&deg;22.0'W, and you estimate your speed of advance at 14 knots. The distance is 4,245 miles. What is your estimated ZT of arrival at Seattle?

At 0915 ZT on 26 July you depart Yokohama, LAT 35°27.0'N, LONG 139°39.0'E (ZD -9). You are bound for Seattle, LAT 47°36.0'N, LONG 122°22.0'W, and you estimate your speed of advance at 14 knots. The distance is 4,245 miles. What is your estimated ZT of arrival at Seattle?