The letters AM and PM refer to the time at which
A) the Sun's rays first appear above the eastern horizon at dawn.
B) the Sun's rays first disappear below the western horizon at dusk.
C) the Sun is directly overhead at noon.
D) the Sun crosses the equator moving north on the first day of Spring.

Question

Quizplus · Accepted Answer

The letters AM and PM refer to ante meridiem and post meridiem, respectively, which means before noon and after noon. This "noon" refers to the time when the Sun is directly overhead, which is around 12:00 PM (or midday). Therefore, choice C is the correct answer. Choices A and B refer to the times of sunrise and sunset, respectively. Choice D refers to the Spring Equinox, which has no direct relation to the AM/PM timekeeping convention.

The Letters AM and PM Refer to the Time at Which