164. On 21 November at 2100 zone time, you depart LAT 32°12.0'N, LONG 69°26.0'W enroute to LAT 12°05.0'N, LONG 7°32.0'W. The distance is 3,519 miles, and the average speed will be 12.5 knots. What is the zone time of arrival?

The steaming time is calculated as 281.52 hours, or approximately 11 days, 17 hours, and 31 minutes. Converting the departure zone time to GMT, adding the steaming time, and then converting back to the destination's time zone results in an arrival time of 1830 on December 3rd.