0400 Military Time
When I first had to work with a 24-hour clock, 0400 military time was hard to remember and easy to mix up. Is it late at night, or early in the morning? To clear that confusion: 0400 military time means 4:00 AM, and it is the fifth hour from the start of the day.
Understanding the 24 hour format removes the confusion between 4 AM which is 0400 and 4 PM which is 1600 military time. This 24-hour clock format is used worldwide in fields like the military, aviation, emergency services, where clear timing is critical.
Here, we break down exactly what 0400 stands for, how to convert it, and how it gets pronounced in the real world. You will also get a complete minute-by-minute chart as a table and downloadable PDF to help you stay on track wherever you are.
0400 Military Time Chart (Minute-by-Minute Conversions)
Standard Time | Military Time | Standard Time | Military Time |
|---|---|---|---|
4:00 AM | 0400 | 4:30 AM | 0430 |
4:01 AM | 0401 | 4:31 AM | 0431 |
4:02 AM | 0402 | 4:32 AM | 0432 |
4:03 AM | 0403 | 4:33 AM | 0433 |
4:04 AM | 0404 | 4:34 AM | 0434 |
4:05 AM | 0405 | 4:35 AM | 0435 |
4:06 AM | 0406 | 4:36 AM | 0436 |
4:07 AM | 0407 | 4:37 AM | 0437 |
4:08 AM | 0408 | 4:38 AM | 0438 |
4:09 AM | 0409 | 4:39 AM | 0439 |
4:10 AM | 0410 | 4:40 AM | 0440 |
4:11 AM | 0411 | 4:41 AM | 0441 |
4:12 AM | 0412 | 4:42 AM | 0442 |
4:13 AM | 0413 | 4:43 AM | 0443 |
4:14 AM | 0414 | 4:44 AM | 0444 |
4:15 AM | 0415 | 4:45 AM | 0445 |
4:16 AM | 0416 | 4:46 AM | 0446 |
4:17 AM | 0417 | 4:47 AM | 0447 |
4:18 AM | 0418 | 4:48 AM | 0448 |
4:19 AM | 0419 | 4:49 AM | 0449 |
4:20 AM | 0420 | 4:50 AM | 0450 |
4:21 AM | 0421 | 4:51 AM | 0451 |
4:22 AM | 0422 | 4:52 AM | 0452 |
4:23 AM | 0423 | 4:53 AM | 0453 |
4:24 AM | 0424 | 4:54 AM | 0454 |
4:25 AM | 0425 | 4:55 AM | 0455 |
4:26 AM | 0426 | 4:56 AM | 0456 |
4:27 AM | 0427 | 4:57 AM | 0457 |
4:28 AM | 0428 | 4:58 AM | 0458 |
4:29 AM | 0429 | 4:59 AM | 0459 |
See the complete minute by minute chart for 0500 military time.
How to Pronounce 0400 to 0459 in Military Time
0400 Military time is pronounced as “Zero Four Hundred Hours” in a professional environment. In common settings it is also called “Oh Four Hundred”. Military time is written with four digits and starting two digits tell hours while the last two tell minutes.
People refer to 0400 in different ways such as “4 am military time”, “04:00 military time” or “4 military time,” but they all represent the same thing.
Below is the full pronunciation chart for every minute from 0000 to 0059.
Military Time | Pronunciation | Military Time | Pronunciation |
|---|---|---|---|
0400 | Zero Four Hundred Hours | 0430 | Zero Four Thirty Hours |
0401 | Zero Four Zero One Hours | 0431 | Zero Four Thirty-One Hours |
0402 | Zero Four Zero Two Hours | 0432 | Zero Four Thirty-Two Hours |
0403 | Zero Four Zero Three Hours | 0433 | Zero Four Thirty-Three Hours |
0404 | Zero Four Zero Four Hours | 0434 | Zero Four Thirty-Four Hours |
0405 | Zero Four Zero Five Hours | 0435 | Zero Four Thirty-Five Hours |
0406 | Zero Four Zero Six Hours | 0436 | Zero Four Thirty-Six Hours |
0407 | Zero Four Zero Seven Hours | 0437 | Zero Four Thirty-Seven Hours |
0408 | Zero Four Zero Eight Hours | 0438 | Zero Four Thirty-Eight Hours |
0409 | Zero Four Zero Nine Hours | 0439 | Zero Four Thirty-Nine Hours |
0410 | Zero Four Ten Hours | 0440 | Zero Four Forty Hours |
0411 | Zero Four Eleven Hours | 0441 | Zero Four Forty-One Hours |
0412 | Zero Four Twelve Hours | 0442 | Zero Four Forty-Two Hours |
0413 | Zero Four Thirteen Hours | 0443 | Zero Four Forty-Three Hours |
0414 | Zero Four Fourteen Hours | 0444 | Zero Four Forty-Four Hours |
0415 | Zero Four Fifteen Hours | 0445 | Zero Four Forty-Five Hours |
0416 | Zero Four Sixteen Hours | 0446 | Zero Four Forty-Six Hours |
0417 | Zero Four Seventeen Hours | 0447 | Zero Four Forty-Seven Hours |
0418 | Zero Four Eighteen Hours | 0448 | Zero Four Forty-Eight Hours |
0419 | Zero Four Nineteen Hours | 0449 | Zero Four Forty-Nine Hours |
0420 | Zero Four Twenty Hours | 0450 | Zero Four Fifty Hours |
0421 | Zero Four Twenty-One Hours | 0451 | Zero Four Fifty-One Hours |
0422 | Zero Four Twenty-Two Hours | 0452 | Zero Four Fifty-Two Hours |
0423 | Zero Four Twenty-Three Hours | 0453 | Zero Four Fifty-Three Hours |
0424 | Zero Four Twenty-Four Hours | 0454 | Zero Four Fifty-Four Hours |
0425 | Zero Four Twenty-Five Hours | 0455 | Zero Four Fifty-Five Hours |
0426 | Zero Four Twenty-Six Hours | 0456 | Zero Four Fifty-Six Hours |
0427 | Zero Four Twenty-Seven Hours | 0457 | Zero Four Fifty-Seven Hours |
0428 | Zero Four Twenty-Eight Hours | 0458 | Zero Four Fifty-Eight Hours |
0429 | Zero Four Twenty-Nine Hours | 0459 | Zero Four Fifty-Nine Hours |
Military Time | Pronunciation |
|---|---|
0400 | Zero Four Hundred Hours |
0401 | Zero Four Zero One Hours |
0402 | Zero Four Zero Two Hours |
0403 | Zero Four Zero Three Hours |
0404 | Zero Four Zero Four Hours |
0405 | Zero Four Zero Five Hours |
0406 | Zero Four Zero Six Hours |
0407 | Zero Four Zero Seven Hours |
0408 | Zero Four Zero Eight Hours |
0409 | Zero Four Zero Nine Hours |
0410 | Zero Four Ten Hours |
0411 | Zero Four Eleven Hours |
0412 | Zero Four Twelve Hours |
0413 | Zero Four Thirteen Hours |
0414 | Zero Four Fourteen Hours |
0415 | Zero Four Fifteen Hours |
0416 | Zero Four Sixteen Hours |
0417 | Zero Four Seventeen Hours |
0418 | Zero Four Eighteen Hours |
0419 | Zero Four Nineteen Hours |
0420 | Zero Four Twenty Hours |
0421 | Zero Four Twenty-One Hours |
0422 | Zero Four Twenty-Two Hours |
0423 | Zero Four Twenty-Three Hours |
0424 | Zero Four Twenty-Four Hours |
0425 | Zero Four Twenty-Five Hours |
0426 | Zero Four Twenty-Six Hours |
0427 | Zero Four Twenty-Seven Hours |
0428 | Zero Four Twenty-Eight Hours |
0429 | Zero Four Twenty-Nine Hours |
0430 | Zero Four Thirty Hours |
0431 | Zero Four Thirty-One Hours |
0432 | Zero Four Thirty-Two Hours |
0433 | Zero Four Thirty-Three Hours |
0434 | Zero Four Thirty-Four Hours |
0435 | Zero Four Thirty-Five Hours |
0436 | Zero Four Thirty-Six Hours |
0437 | Zero Four Thirty-Seven Hours |
0438 | Zero Four Thirty-Eight Hours |
0439 | Zero Four Thirty-Nine Hours |
0440 | Zero Four Forty Hours |
0441 | Zero Four Forty-One Hours |
0442 | Zero Four Forty-Two Hours |
0443 | Zero Four Forty-Three Hours |
0444 | Zero Four Forty-Four Hours |
0445 | Zero Four Forty-Five Hours |
0446 | Zero Four Forty-Six Hours |
0447 | Zero Four Forty-Seven Hours |
0448 | Zero Four Forty-Eight Hours |
0449 | Zero Four Forty-Nine Hours |
0450 | Zero Four Fifty Hours |
0451 | Zero Four Fifty-One Hours |
0452 | Zero Four Fifty-Two Hours |
0453 | Zero Four Fifty-Three Hours |
0454 | Zero Four Fifty-Four Hours |
0455 | Zero Four Fifty-Five Hours |
0456 | Zero Four Fifty-Six Hours |
0457 | Zero Four Fifty-Seven Hours |
0458 | Zero Four Fifty-Eight Hours |
0459 | Zero Four Fifty-Nine Hours |
How to Convert 0400 to Standard Time
Military time has four digits while the first two digits are hours and last two digits are minutes. We can convert 0400 to standard time using these simple rules:
- For Hours: Take the first two digits (04) and remove the leading zero = 4
- For Minutes: Take the last two digits (00) and they remain the same.
- Insert Colon: Add a colon between hours and minutes: (04:00)
- Add AM/PM: For morning hour, we add AM to time (04:00 AM)
Examples:
Remember: All times from 0001 to 1159 hours represent AM (or morning) times. For complete conversion rules, visit our military time converter page.
In Closing
0400 military time is a very important early-morning hour where clarity matters most. You now know what 0400 means and how it converts to standard time in a glance. You also have a complete minute by minute chart with pronunciations as a table and downloadable PDF to be used for quick reference.
If you regularly work with schedules, shift times, or operations that use military time, learning each hour of the 24-hour clock is essential. Our military time chart shows you how every hour is converted, written and read for better understanding. Keep practicing, and the 24-hour clock will become second nature in no time!