P.M., PM, p.m. means afternoon
(post meridiem in Latin)
A.M., AM, a.m. means before noon
(ante meridiem in Latin)
Usage Note
12 A.M. = midnight and 12 P.M. = noon
To be clear it is better to say 12 noon and 12 midnight.
A common error is to combine o'clock and PM or AM.Use only one or the other:
CORRECT: Two o'clock in the afternoon. OR Two o'clock.
INCORRECT: Two o'clock PM.
| Time | Ways to Say the Time |
| 04:00:00 AM | Four o'clock |
| 02:15:00 AM | Two-fifteen Quarter past two |
| 06:30:00 AM | Six-thirty Half past six |
| 02:45:00 AM | Two-forty-five Quarter to three |
| 07:50:00 AM | Seven-fifty Ten to eight |
| 08:11:00 AM | Eight-eleven Eleven minutes past eight |
| 11:48:00 AM | Eleven-forty-eight Twelve minutes to twelve |
| 12:00:00 PM | Twelve o'clock Noon (middle of the day) Midnight (middle of the night) |
For more examples and explanations see:
http://arcytech.org/java/clock/telling_time.html
