90 lines
3.0 KiB
Markdown
90 lines
3.0 KiB
Markdown
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title: Converting AM/PM to 24 Hour Clock
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---
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## Converting AM/PM to 24 Hour Clock
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There are two main ways to show the time: "12-Hour Clock" or "a.m./p.m.": 24-Hour Clock.
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Most countries prefer the 24-Hour Clock, yet, in Latin America and English-speaking countries the 12-Hour Clock is broadly used, where twice a day it is 12:00, at midnight and at noon. To distinguish between both, you can add a.m. or p.m. respectively.
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Table below show the conversion between 12-hour clock system and 24-hour clock system.
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| 12-hour clock system|24-hour clock system|
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| ------------- |:-------------: |
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| 12:00 AM | 00:00 |
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| 01:00 AM | 01:00 |
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| 02:00 AM | 02:00 |
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| 03:00 AM | 03:00 |
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| 04:00 AM | 04:00 |
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| 05:00 AM | 05:00 |
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| 06:00 AM | 06:00 |
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| 07:00 AM | 07:00 |
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| 08:00 AM | 08:00 |
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| 09:00 AM | 09:00 |
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| 10:00 AM | 10:00 |
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| 11:00 AM | 11:00 |
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| 12:00 PM | 12:00 |
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| 01:00 PM | 13:00 |
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| 02:00 PM | 14:00 |
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| 03:00 PM | 15:00 |
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| 04:00 PM | 16:00 |
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| 05:00 PM | 17:00 |
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| 06:00 PM | 18:00 |
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| 07:00 PM | 19:00 |
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| 08:00 PM | 20:00 |
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| 09:00 PM | 21:00 |
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| 10:00 PM | 22:00 |
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| 11:00 PM | 23:00 |
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## 12-hour Clock (a.m./p.m.)
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The day is split into 12 hours running from Midnight to Noon (a.m. hours) and 12 hours running from Noon to Midnight (p.m. hours).
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The abbreviations “a.m. and p.m.” derive from Latin:
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- a.m.: Ante Meridiem = Before Noon.
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- p.m.: Post Meridiem = Afternoon.
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## 24-hour Clock
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The day runs from midnight to midnight and is divided into 24 hours, indicated by the hours passed since midnight, from 0 to 23.
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## Converting AM/PM to 24 Hour Clock
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### From the first hour of the day (12:00 am (Midnight) to 12:59 am), and subtract 12 hours.
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- 12:00 a.m. = 0:00
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- 12:15 a.m. = 0:15
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### From 1:00 a.m. to 12:59 p.m., remains the same.
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- 9:00 a.m. = 9:00
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- 12:59 p.m. = 12:59
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### From 1:00 p.m. to 11:59 p.m., add 12 hours.
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- 3:17 p.m. = 15:17
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- 11:59 p.m. = 23:59.
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## Converting 24-hour Clock to a.m/p.m
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### For the first hour of the day (0:00 to 0:59), add 12 hours and add the “a.m.” termination.
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- 0:30 = 12:30 a.m.
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- 0:55 = 12:55 a.m.
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### From 1:00 to 11:59, just add the “a.m.” termination.
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- 2:25 = 2:25 a.m.
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- 9:30 = 9:30 a.m.
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### From 13:00 to 23:59, subtract 12 hours, and add the “p.m.” termination.
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- 16:55 = 4:55 p.m.
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- 21:45 = 8:45 p.m.
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#### More Information:
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To read more abaout 24-hour system, you can click [Wikipedia](https://en.wikipedia.org/wiki/24-hour_clock)
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