03:58 is 3:58 AM on a 12-hour clock and "03:58 Hours" in Military Time. We use this system throughout the world (not just the military) and leverages a 24-hour time clock rather than the 12-hour AM/PM system known to most English-speaking countries. Below are ways to convert 03:58 through a time chart, automated calculator, and ways to convert by hand.
| 24-hour format | 12-hour format |
|---|---|
| 03:58 | 3:58 AM |
A quick cheatsheet for all time conversions like 3:58 AM. Click the clock. Select your time. We'll highlight the row for the time you choose.
It is easy to convert from 24-hour time to 12-hour time once you know a few tricks. The primary difference between the two is that the hours in a 24-hour clock go all the way up to 23 (from 0 to 23). In a 12-hour clock, the hour resets to 1 after noon (midday). Follow the steps below to convert 03:58 to 12-hour time.
24-hour time is used in aviation, military, meteorology, logistics, and other fields. The 12-hour clock is only used in 18 countries globally, including the United States and Canada. 24-hour time and military time are very similar! See our military time converter for more information.
| 24 Hour Clock | 12 Hour Clock (AM/PM) | Military Time |
|---|---|---|
| 03:58 | 3:58 | 0358 |
| 04:03 | 4:03 | 0403 |
| 04:08 | 4:08 | 0408 |
| 04:13 | 4:13 | 0413 |
| 04:18 | 4:18 | 0418 |
| 04:23 | 4:23 | 0423 |
| 04:28 | 4:28 | 0428 |
| 04:33 | 4:33 | 0433 |
| 04:38 | 4:38 | 0438 |
| 04:43 | 4:43 | 0443 |
| 04:48 | 4:48 | 0448 |
| 04:53 | 4:53 | 0453 |
| 04:58 | 4:58 | 0458 |
| 05:03 | 5:03 | 0503 |
| 05:08 | 5:08 | 0508 |
| 05:13 | 5:13 | 0513 |