What time is 0400 Hours in Military Time? 4:00 AM in regular time on a 12-hour clock. Military format is used throughout the world (not just the military) and leverages a 24-hour time format which has been adopted by military, first responders, and hospital time setting. Below are ways to convert 0400 through a time chart, automated converter, and how to convert the 24 hour clock into a 12-hour AM/PM system by hand.
| Military format | 12-hour format |
| 0400 | 4:00 AM |
The use of military time has been dated back to the Early Egyptians in the 11th Dynasty. That's pretty old!
Converting 0400 from Military Time to 12h regular time is quite simple. Follow the steps below:
In 12-hour time, the day is split into two distinct parts: before noon and after noon. When time is before noon (12:00 in 24-hour time), we append "AM" to the time. When time is after noon (after midday), we append "PM".
| 24 Hour Clock | 12 Hour Clock (AM/PM) | Military Time |
|---|---|---|
| 04:00 | 4:00 | 0400 |
| 04:05 | 4:05 | 0405 |
| 04:10 | 4:10 | 0410 |
| 04:15 | 4:15 | 0415 |
| 04:20 | 4:20 | 0420 |
| 04:25 | 4:25 | 0425 |
| 04:30 | 4:30 | 0430 |
| 04:35 | 4:35 | 0435 |
| 04:40 | 4:40 | 0440 |
| 04:45 | 4:45 | 0445 |
| 04:50 | 4:50 | 0450 |
| 04:55 | 4:55 | 0455 |
| 05:00 | 5:00 | 0500 |
| 05:05 | 5:05 | 0505 |
| 05:10 | 5:10 | 0510 |
| 05:15 | 5:15 | 0515 |
The way to read 0400 in military format always begins with four digits. Add the hours format “0400” the timezone (example: Yankee time zone). Once we have 0400 + Yankee say “hours” in the conclusion. This gives direct orders of time of day and timezone in a clear, concise way without using AM or PM 12 hour format.