many used that in avribaition of morning and afternoon
2007-11-06 18:07:12 · 8 answers · asked by Anonymous in Education & Reference ➔ Homework Help
a.m. means from after midnight (24h1second) to midday(12h).
p.m. means from after midday(12h1second) to midnight(24h).
2007-11-06 18:10:53 · answer #1 · answered by Shony07 4 · 0⤊ 0⤋
“AM” stands for the Latin phrase Ante Meridiem —which means “before noon”—and “PM” stands for Post Meridiem : “after noon.” Although digital clocks routinely label noon “12:00 PM” you should avoid this expression not only because it is incorrect, but because many people will imagine you are talking about midnight instead. The same goes for “12:00 AM.” Just say or write “noon” or “midnight” when you mean those precise times.
It is now rare to see periods placed after these abbreviations: “A.M.” , but in formal writing it is still preferable to capitalize them, though the lower-case “am” and “pm” are now so popular they are not likely to get you into trouble.
Occasionally computer programs encourage you to write “AM” and “PM” without a space before them, but others will misread your data if you omit the space. The nonstandard habit of omitting the space is spreading rapidly, and should be avoided in formal writing.
2007-11-06 18:11:37 · answer #2 · answered by bakfanlin 6 · 1⤊ 0⤋
A.M. is Ante Meridian - Ante is before, and Meridian - the highest point of the sun or noon. Before Noon.
P.M. is Post Meridian - Post is after, etc.... After Noon (all the way to Midnight)
the following website defines it best:
http://www.csulb.edu/~gordon/100lonline/sidereal/meridian.html
2007-11-06 18:18:49 · answer #3 · answered by Princess Picalilly 4 · 0⤊ 0⤋
ANTE MERIDIEM.....Ante Meridian. Latin="before midday".
POST MERIDIEM.....Post Meridian. Latin="after midday".
It is also advisable to use 12 noon & 12 midnight where there is more clarity instead of 12am and 12pm.
2007-11-06 18:18:03 · answer #4 · answered by N. 2 · 0⤊ 0⤋
AM is called ante meridiem (a.m., from Latin, meaning "before mid day", or "before the middle of the day")
PM is called post meridiem (p.m., "after mid day" or "after the middle of the day").
Good luck!
2007-11-06 18:09:26 · answer #5 · answered by Anonymous · 2⤊ 1⤋
check it out on wikipedia.org
12-hour clock - Wikipedia, the free encyclopedia
... before noon", compared to the modern meaning of "three hours after midnight" ... The abbreviations "AM" and "PM" are variously written in small capitals ...en.wikipedia.org/wiki/Post_meridiem - 54k - Cached
2007-11-06 19:04:02 · answer #6 · answered by Barbara L 6 · 0⤊ 0⤋
am - ante meridiem
pm - post meridiem
2007-11-06 18:42:54 · answer #7 · answered by Anonymous · 1⤊ 0⤋
after and post midnight
2007-11-06 18:10:38 · answer #8 · answered by Anonymous · 0⤊ 1⤋