2006-09-13 06:33:28 · 4 answers · asked by Anonymous in Education & Reference ➔ Standards & Testing
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; however, "12 noon" and midnight more clearly and correctly express these times.
2006-09-13 06:35:45 · answer #1 · answered by Anonymous · 0⤊ 0⤋
am is the time between midnight and 11:59 (one minute before noon)
pm is the time between noon and 11:59 (one minute before midnight)
2006-09-13 13:42:00 · answer #2 · answered by rab 4 · 0⤊ 0⤋
am is day-time; pm is night-time.
2006-09-13 13:42:10 · answer #3 · answered by lady sixx 6 · 0⤊ 0⤋
yes
2006-09-13 13:36:24 · answer #4 · answered by Anonymous · 0⤊ 0⤋