In a few countries, like the U.S., a 12 hour clock is the standard default for the general population, but certain sub-populations, such as the military, use the 24 hour clock. In those countries, this is often referred to as military time.
For the sake of accuracy, actual military time has rules somewhat different from the general 24 hour clock. So while "military time" is sort of slang for the 24 hour clock, the actual military has its own peculiarities that are hard rules written up in regulations. …show more content…
and a 24 hour clock. Many civilians find the conversion process confusing. While the 12 hour clock is familiar, there are ways in which it is less accurate for conveying information. This is why the military and certain other organizations, such as hospitals, use a 24 hour clock even in countries that default to a 12 hour clock.
Some people find it really hard to make the conversion in their head. In such cases, a printable military time chart can be very handy. It can allow them to put a paper copy in their wallet and refer to it as needed.
A military time conversion chart isn't really complete without some explanation as to the differences between the 12 hour clock and the 24 hour clock. Let's start by talking a bit about the 12 hour clock.
On this clock, we use the abbreviations a.m. and p.m. to distinguish between "morning" and "afternoon" times. At least, that is how most people think of it. In truth, a.m. means ante meridiem -- before midday -- and p.m. means post meridiem -- after midday. Midday is an old fashioned term for noon. Thus, a.m. times are between midnight and noon, and p.m. times are between noon and …show more content…
In fact, it introduces new concern specific to the expression of midnight. Although for start times, midnight is expressed as 0000 (or "zero hundred hours"), in some cases end times express midnight as 2400. In a few cases, times past midnight will be written as a value greater than 2400, such as listing 1 a.m. as 2500 in order to make it clear that it is later than an earlier listed time. For example, if a venue is only open from 7 p.m. to 1 a.m., expressing that as 1900 to 2500 intuitively makes more sense for the reader than 1900 to