12-hour clock
The 12-hour clock is a method of telling the time in which the civil day runs from midnight until next midnight.
- AM (ante meridiem) = midnight to midday.
- PM (post meridiem) = midday to midnight.
The following numbers (used twice in the same civil day) of hours are: 12 (acting as 0), 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11, with AM or PM.
Both names are from Latin and ante meridiem, means "before midday" and post meridiem means "after midday".[1]
The 12-hour time is common in several English-speaking countries and former British colonies (such as the United Kingdom, the United States of America, the English speaking parts of Canada or India), as well as a few other countries. There is no widely accepted convention for how midday and midnight should be represented: in English-speaking countries, "12:00 PM" means 12 o'clock midday, while "12:00 AM" means 12 o'clock midnight.[2][3][4]
| 24-hour clock | 12-hour clock | Military time | Period |
|---|---|---|---|
| 00:00 | 12:00 AM Midnight | 0000 LT[5] | Postmidnight |
| 01:00 | 1:00 AM | 0100 LT | |
| 02:00 | 2:00 AM | 0200 LT | |
| 03:00 | 3:00 AM | 0300 LT | |
| 04:00 | 4:00 AM | 0400 LT | |
| 05:00 | 5:00 AM | 0500 LT | |
| 06:00 | 6:00 AM | 0600 LT | Morning |
| 07:00 | 7:00 AM | 0700 LT | |
| 08:00 | 8:00 AM | 0800 LT | |
| 09:00 | 9:00 AM | 0900 LT | |
| 10:00 | 10:00 AM | 1000 LT | |
| 11:00 | 11:00 AM | 1100 LT | |
| 12:00 | 12:00 PM Midday Noon | 1200 LT | Afternoon |
| 13:00 | 1:00 PM | 1300 LT | |
| 14:00 | 2:00 PM | 1400 LT | |
| 15:00 | 3:00 PM | 1500 LT | |
| 16:00 | 4:00 PM | 1600 LT | |
| 17:00 | 5:00 PM | 1700 LT | |
| 18:00 | 6:00 PM | 1800 LT | Evening |
| 19:00 | 7:00 PM | 1900 LT | |
| 20:00 | 8:00 PM | 2000 LT | |
| 21:00 | 9:00 PM | 2100 LT | |
| 22:00 | 10:00 PM | 2200 LT | |
| 23:00 | 11:00 PM | 2300 LT |
References
[change | change source]- ↑ "Time". The New Encyclopædia Britannica. Vol. 28. 1986. pp. 660 2a.
"Time". Encyclopædia Britannica. Encyclopædia Britannica Online Library Edition. Retrieved 20 November 2013.The use of AM or PM to designate either noon or midnight can cause ambiguity.
- ↑ "Is noon 12 am or 12 pm?". Royal Museums Greenwich. Retrieved 2023-01-26.
- ↑ "U.S. Government Printing Office Style Manual - Chapter 12 - Numerals". govinfo.gov. Retrieved 2023-01-27.
- ↑ "time of day, elapsed time". Resources of the Language Portal of Canada. 2020-10-22. Retrieved 2023-01-27.
- ↑ LT is Legal Time.
