Question 1738Navigation General

The correct answer is D) 180.0°. The standard time meridian for the time zone description +12 is 180.0°, which corresponds to the International Date Line. This is the meridian that separates one calendar day from the next, with locations to the east being one day ahead of locations to the west. The other answer choices are incorrect because: A) 172.5°E is not the standard time meridian for +12, as it is located in the eastern hemisphere. B) 172.5°W is not the standard time meridian for +12, as it is located in the western hemisphere. C) 165.0°W is not the standard time meridian for +12, as it is located in the western hemisphere.