2007-09-25 12:45:04 · 13 answers · asked by d k 1 in Education & Reference ➔ Trivia
The abbreviation a.m. for Latin ante meridiem, meaning “before noon,” refers to the period from midnight until noon. One minute before noon is 11:59 a.m. One minute after noon is 12:01 p.m. Many people distinguish between noon and midnight by saying 12 noon and 12 midnight. Expressions combining a.m. with morning (6 a.m. in the morning) and p.m. with afternoon, evening, or night (9 p.m. at night) are redundant and occur most often in casual speech and writing. Both a.m. and p.m. sometimes appear in capital letters, especially in printed matter.
post meridiem
Usage Note: By definition, 12 A.M. denotes midnight, and 12 P.M. denotes noon, but there is sufficient confusion over the meanings of A.M. and P.M. when the hour is 12 to make it advisable to use 12 noon and 12 midnight where clarity is required.
2007-09-25 14:25:11 · answer #1 · answered by Who's sarcastic? 6 · 0⤊ 0⤋
AM = ante meridian; PM = post meridian
/Meridian/ is derived from the Latin word for midday. /ante/ means before. /post/ means after
Because of this, properly noon is 12 noon and not 12 pm, because it *is* midday, not after midday. Some (like the reference I'm including below) argue that midnight isn't 12 am either, but it *is* 12 before midday, so I'm not sure about that.
2007-09-25 13:20:34 · answer #2 · answered by OsteodontokeraticMan 2 · 1⤊ 0⤋
AM-ante meridien before noon
PM-post meridien after noon
Meridien line is Greenwich mean time .When it is noon there it is 7AM on the East coast and like 1 Pm in Italy
2007-09-25 14:48:39 · answer #3 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
A.M. = ante meridiem
Before noon. Used chiefly in the abbreviated form to specify the hour: 10:30 A.M.
P.M. = post meridiem
After noon. Used chiefly in the abbreviated form to specify the hour: 10:30 P.M.
2007-09-25 13:28:22 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Ante Meridian (am)
Post Meridian (pm)
2007-09-25 13:21:03 · answer #5 · answered by kel 2 · 0⤊ 0⤋
Ante Meridian (am)= in the morning
Post Meridian (pm)= in the evening
2007-09-25 14:41:12 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Ante Meridian which is before noon
Post Meridian after noon
2007-09-25 12:54:36 · answer #7 · answered by Anonymous · 1⤊ 0⤋
morning represents am and night represents pm.
2007-09-25 14:38:02 · answer #8 · answered by pat 2 · 0⤊ 1⤋
The abbreviation a.m. for Latin ante meridiem, meaning “before noon,” refers to the period from midnight until noon.
post meridiem :Abbr. or p.m. or P.M.
After noon.
2007-09-25 12:51:11 · answer #9 · answered by Anonymous · 1⤊ 0⤋
http://en.wikipedia.org/wiki/12-hour_clock
2007-09-28 19:47:02 · answer #10 · answered by Anonymous · 0⤊ 0⤋