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[ Military Time / The "24-Hour" Clock ]
Commonly known as "military"
time, and formally referred as Universal Military Time [UMT], the
24-hour clock is the normal method of indicating time when using your
radio.
Converting to military time is quick
and easy with a little practice. Since the day is divided into
24-hours, references to "AM"
or "PM" are no longer needed.
Any number higher than 1200 equals
a PM time period.
Another benefit of
using military time is that time is always referred to in hundreds of
hours. For example, 0200 Hours is reported as "Zero Two
Hundred Hours" and 1700 Hours is reported as Seventeen Hundred
Hours.
So
the next time you are listening to your
radio or watching a military
movie and someone
says its "2130
hours" -- you'll now be able to use simple subtraction to find
civilian time: 2130 - 1200 = 9:30 PM
| - AM
- |
-
PM
- |
| Military |
|
Civilian |
Military |
|
Civilian |
| 0001
Hrs |
= |
12:01
AM |
1201
Hrs |
= |
12:01
PM |
| 0100
Hrs |
= |
1:00
AM |
1300
Hrs |
= |
1:00
PM |
| 0200
Hrs |
= |
2:00
AM |
1400
Hrs |
= |
2:00
PM |
| 0300
Hrs |
= |
3:00
AM |
1500
Hrs |
= |
3:00
PM |
| 0400
Hrs |
= |
4:00
AM |
1600
Hrs |
= |
4:00
PM |
| 0500
Hrs |
= |
5:00
AM |
1700
Hrs |
= |
5:00
PM |
| 0600
Hrs |
= |
6:00
AM |
1800
Hrs |
= |
6:00
PM |
| 0700
Hrs |
= |
7:00
AM |
1900
Hrs |
= |
7:00
PM |
| 0800
Hrs |
= |
8:00
AM |
2000
Hrs |
= |
8:00
PM |
| 0900
Hrs |
= |
9:00
AM |
2100
Hrs |
= |
9:00
PM |
| 1000
Hrs |
= |
10:00
AM |
2200
Hrs |
= |
10:00
PM |
| 1100
Hrs |
= |
11:00
AM |
2300
Hrs |
= |
11:00
PM |
| 1200
Hrs |
= |
12
Noon |
0000
Hrs |
= |
12
Midnight |
- Some military people
use terms similar to a form of "military shorthand" when
referring to time. For example, the term "Oh Dark
Thirty" is not an actual time. But military people use the
term to refer to "sometime during the middle of the night"
or "sometime very, very early in the morning."
- Sometimes a military
person will refer to Zero Five Hundred [0500 Hours] as "Oh Five
Hundred." The 0500 is a number, not a letter,
so the reference is technically incorrect. However, it's not an
uncommon reference.
- Official military time
for mid-night is 0000 Hours, but many people and reputable sources also
use 2400 Hours.
Last Reviewed: 2008-01-29
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