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How to Tell Military Time: Decoding and Converting 24-Hour Time

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When you first encounter military time, those numbers on the clock might look like a secret code. But fret not; decoding military time is easier than you think. In this comprehensive guide, we'll demystify military time and equip you with the knowledge to effortlessly tell it and convert it to the 12-hour format.

How to Tell Military Time

What Is Military Time?

Military time, also known as the 24-hour clock, is a system used globally, especially in military and aviation contexts, for timekeeping. Unlike the standard 12-hour clock that repeats twice in a day (AM and PM), the 24-hour clock uses a single cycle from 00:00 (midnight) to 23:59 (11:59 PM).

So, when you hear someone mention a time like 14:30, they're referring to 2:30 PM in the 12-hour clock.

The Basics: Learning the Model

Reading military time is straightforward once you understand the conventions:

  • The hours run from 00 to 23.

  • The minutes follow from 00 to 59.

  • There are no AM or PM indicators because military time doesn't use them.

For example:

  • 07:00 is 7:00 AM.

  • 15:30 is 3:30 PM.

  • 23:45 is 11:45 PM.

Benefits of Military Time

Military time might seem a bit rigid, but it has several advantages:

  1. No AM/PM Confusion: One of the primary benefits is the elimination of AM and PM confusion. You always know if it's morning or evening.

  2. Global Standard: It's a global standard, making it ideal for international communication, especially in aviation and healthcare.

  3. Precise Timing: Military and scientific applications benefit from the precise timekeeping offered by this system.

Converting Military Time to Normal Time (12-Hour Format)

While military time offers clarity, you might still need to convert it to the 12-hour clock for everyday use. Here's how:

Morning Hours (00:00 - 11:59)

Morning hours in military time are the same as in the 12-hour clock. Just drop the leading zero if there is one. For example:

  • 04:00 becomes 4:00 AM.

  • 09:30 remains 9:30 AM.

Afternoon and Evening Hours (12:00 - 23:59)

Afternoon and evening hours require a bit more attention:

  1. Subtract 12 from the hour: If the military time is between 13:00 (1:00 PM) and 23:59 (11:59 PM), subtract 12 from the hour.

    • 13:45 becomes 1:45 PM (13 - 12 = 1).

    • 20:15 becomes 8:15 PM (20 - 12 = 8).

  1. Leave the minutes as they are.

Midnight Hour (00:00)

Midnight in military time is 00:00, but in the 12-hour format, it's either 12:00 AM or simply 12 midnight.

Noon Hour (12:00)

Noon in military time is 12:00, and it remains 12:00 PM in the 12-hour format.

A Handy Trick for PM Times

When converting military time to the 12-hour format, you can use a simple trick for PM times in digital systems. Instead of subtracting 12 from the hour, just add "PM" after the time. This works for hours between 13:00 and 23:59. For example:

  • 14:30 becomes 2:30 PM.

  • 19:45 becomes 7:45 PM.

Practice Makes Perfect

Like any new skill, becoming proficient at reading and converting military time takes practice. Consider using online tools and apps that provide both military and standard time formats to reinforce your learning.


Military time is a practical and precise way of expressing time without AM and PM confusion. By understanding its basic principles and mastering the conversion to the 12-hour format, you can confidently use military time in various situations, from scheduling appointments to reading train timetables or even decoding military operations.

So, the next time you come across military time, remember that it's not a secret code but a straightforward system designed for clarity and precision.

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