시간을 24시간형식으로 적는 나는 12시간형식으로 쓰인 내용을 볼 때 스트레스를 받는데, 특히 12 a.m.과 12 p.m.의 경우.

그래서 Wikipedia의 12-hour clock 페이지를 열어 보았다: https://en.wikipedia.org/wiki/12-hour_clock#cite_note-noonmidnight-7
역시 “Confusion at noon and midnight” 항목이 있.

It is not always clear what times “12:00 a.m.” and “12:00 p.m.” denote. In Latin, ante meridiem (a.m.) means “before midday” and post meridiem (p.m.) means “after midday”. Since noon is neither before nor after itself, the terms a.m. and p.m. do not apply. Although noon could be denoted “12 m.”, this is seldom done and also does not resolve the question of how to indicate midnight.
By convention, “12 a.m.” denotes midnight and “12 p.m.” denotes noon. However, …