24-hour clock
| 24-hour clock | 12-hour clock | Military time | Period |
|---|---|---|---|
| 00:00 | 12:00 AM Midnight | 0000 LT[1] | 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 |
The 24-hour clock is a method of telling the time in which the civil day runs from midnight until next midnight.
The following numbers (used once in the same civil day) of hours are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22 and 23, without AM nor PM.
This system is also referred to (only in the United States and the English speaking parts of Canada) as military time[2][better source needed] or (only in the United Kingdom and now very rarely) as continental time. [source?]
In some parts of the world, it is called railway time. Also, the international standard notation of time (ISO 8601) is based on this format.[source?]
Particulars
[change | change source]A time in the 24-hour clock is written in the form hours:minutes (for example, 01:23), or hours:minutes:seconds (01:23:45). Numbers under 10 have a zero in front (called a leading zero); e.g. 09:07. Under the 24-hour clock system, the day begins at midnight, 00:00. The last minute of the day begins at 23:59 and ends at 24:00, which is the same as 00:00 of the following day. This means that "Tuesday at 24:00" and "Wednesday at 00:00" are the same time.[source?] Because of this, 12:00 is always noon.
Advantages over the 12-hour clock system:[source?]
- Less confusion between morning and evening.
- 12:00 is always midday.
Application
[change | change source]Regional
[change | change source]In many African, Asian, European and Latin American countries people use it to write the time. Many people use it in speaking. Many digital wristwatches and clocks can display the time of day using the 24-hour clock.[source?]
Military
[change | change source]The U.S. military prefers not to say 24:00 - they do not like to have two names for the same thing, so they always say "23:59", which is one minute before midnight.[source?]
24-hour clock time is used in computers, by the militaries, for public safety, and in transport.[source?]
Railway
[change | change source]In railway timetables 24:00 means the end of the day. For example, a train due to arrive at a station during the last minute of a day arrives at 24:00; but trains which depart during the first minute of the day go at 24:00. To write shop opening hours until midnight use, for example, "24:00–24:00", "07:00–24:00".[source?]
Related pages
[change | change source]References
[change | change source]- ↑ LT is Local Time.
- ↑ "How To Convert Military Time". lcym.org. Retrieved 2021-05-07.
