A ship is in longitude 54°00'W on a true course of 270°. The ship's clocks are on the proper time zone. At what longitude should the clocks be changed to maintain the proper zone time?

Question

A ship is in longitude 54&deg;00'W on a true course of 270&deg;. The ship's clocks are on the proper time zone. At what longitude should the clocks be changed to maintain the proper zone time?

Accepted Answer

Option D: 67&deg;30'W. Standard time zones are centered on meridians every 15 degrees of longitude, extending 7.5 degrees east and west of each central meridian. Operating at 54°W (Zone 4), the ship must adjust clocks when crossing the zone boundary at 67°30'W into Zone 5.

A ship is in longitude 54&deg;00'W on a true course of 270&deg;. The ship's clocks are on the proper time zone. At what longitude should the clocks be changed to maintain the proper zone time?

A ship is in longitude 54°00'W on a true course of 270°. The ship's clocks are on the proper time zone. At what longitude should the clocks be changed to maintain the proper zone time?