Question 1739Navigation General

The correct answer is D) 180.0°. The standard time meridian for zone description -12 is 180.0°, which corresponds to the International Date Line. This is because the time zone system divides the world into 24 time zones, each spanning 15 degrees of longitude, with the first time zone centered on the 0° meridian (Greenwich Meridian). Therefore, the time zone with a designation of -12 is located 180 degrees west of the Greenwich Meridian. The other options are incorrect because they do not correspond to the standard time meridian for zone description -12. Option A (165.0°E) and Option B (172.5°E) are located in the Eastern Hemisphere, while Option C (172.5°W) is in the Western Hemisphere but not at the International Date Line.