What time is 04:21?
👉 04:21 in 24-hour time is 4:21 AM in 12-hour time
4:21 AM in every format
| 12-hour clock | 4:21 AM |
|---|---|
| 24-hour clock | 04:21 |
| Military time | 0421 hours |
| Military pronunciation | zero four twenty-one hours |
| ISO 8601 | T04:21:00 |
| In words | Twenty-one minutes past four |
| Part of the day | Night |
| Minutes since midnight | 261 |
| Day progress | 18.12% |
How to convert 04:21 to 12-hour time
Hours 01–11 stay the same and take AM: 04:21 → 4:21 AM.
At 4 AM early-morning workers begin to stir; delivery drivers, farmers and airport staff often start their day during this hour.
24-hour to 12-hour chart for 04:00–04:59
| 24-hour | 12-hour |
|---|---|
| 04:00 | 4:00 AM |
| 04:05 | 4:05 AM |
| 04:10 | 4:10 AM |
| 04:15 | 4:15 AM |
| 04:20 | 4:20 AM |
| 04:25 | 4:25 AM |
| 04:30 | 4:30 AM |
| 04:35 | 4:35 AM |
| 04:40 | 4:40 AM |
| 04:45 | 4:45 AM |
| 04:50 | 4:50 AM |
| 04:55 | 4:55 AM |
Questions about What time is 04:21?
What time is 04:21?
04:21 is 4:21 AM. Hours 01–11 stay the same and take AM: 04:21 → 4:21 AM.