a.m = ?
p.m = ?
2006-08-02 03:20:53 · 10 answers · asked by Q ? 2 in Education & Reference ➔ Other - Education
A.M is 12:01(after midnight or morning) to 11:59 (before noon)
P.M is 12:01 (after noon) to 11:59 (before midnight)
Here is why didn't just go 12 hour times well when it's 12:00 o'clock it's either noon or midnight when it's noon it's techinacally not p.m because p.m is after noon and it's the same with midnight except that it's to mornig a.m is mornig.
"AM and PM start immediately after Midnight and Noon (Midday) respectively.
This means that 00:00 AM or 00:00 PM (or 12:00 AM and 12:00 PM) have no meaning.
Every day starts precisely at midnight and AM starts immediately after that point in time e.g. 00:00:01 AM (see also leap seconds)
To avoid confusion timetables, when scheduling around midnight, prefer to use either 23:59 or 00:01 to avoid confusion as to which day is being referred to.
It is after Noon that PM starts e.g. 00:00:01 PM (12:00:01)"
2006-08-02 03:33:53 · answer #1 · answered by edyyrules 3 · 0⤊ 0⤋
The 12-hour clock is a timekeeping convention in which the 24 hours of the day are divided into two periods called ante meridiem (a.m., from Latin, literally "before midday") and post meridiem (p.m., "after midday"). Each period consists of 12 hours numbered 12 (acting as a zero), 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11. The a.m. period runs from midnight to noon, while the p.m. period runs from noon to midnight. The most common convention is to assign 12 a.m. to midnight and 12 p.m. to noon, defining both half days to have a closed (inclusive) beginning and open (exclusive) end.
2006-08-02 10:25:03 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Ante Meridiem, Post Meridiem. Latin for before midday and after midday respectively.
2006-08-02 10:48:32 · answer #3 · answered by Jestnii 2 · 1⤊ 0⤋
“AM” stands for the Latin phrase Ante Meridiem —which means “before noon”—and “PM” stands for Post Meridiem : “after noon.”
Good Question, I just learned this today also!
2006-08-02 10:31:13 · answer #4 · answered by muziqluvergurl 1 · 1⤊ 0⤋
After Midday time
Past Midday time
2006-08-02 10:25:04 · answer #5 · answered by Anonymous · 0⤊ 0⤋
before noon - a.m. - ante meridian
after noon - p.m. - post meridian
Its latin, ante - before, post - after, meridian - middle (of the day)
2006-08-02 10:24:55 · answer #6 · answered by Anonymous · 1⤊ 0⤋
12 midnight to 12 noon = am
12 noon to 12 midnight = pm
2006-08-02 10:24:02 · answer #7 · answered by Anonymous · 0⤊ 0⤋
am = ante meridiem, the hours before noon,
pm = post meridiem, the hours after noon
Latin.
2006-08-02 10:25:28 · answer #8 · answered by Gungnir 5 · 1⤊ 0⤋
AM is ante meridian (before the sun crosses your meridian or your longitude)
PM is post meridian (after the sun crosses your longitude)
2006-08-02 10:26:19 · answer #9 · answered by jurydoc 7 · 0⤊ 0⤋
ante meridian & post meridian ... before noon & after noon - check this out:
http://wwp.greenwichmeantime.com/info/noon.htm
2006-08-02 10:27:10 · answer #10 · answered by Toots 2 · 0⤊ 0⤋