What time is 23:59?
👉 23:59 in 24-hour time is 11:59 PM in 12-hour time
11:59 PM in every format
| 12-hour clock | 11:59 PM |
|---|---|
| 24-hour clock | 23:59 |
| Military time | 2359 hours |
| Military pronunciation | twenty-three fifty-nine hours |
| ISO 8601 | T23:59:00 |
| In words | One minute to midnight |
| Part of the day | Night |
| Minutes since midnight | 1,439 |
| Day progress | 99.93% |
How to convert 23:59 to 12-hour time
Hours 13–23 lose 12 and take PM: 23 − 12 = 11, so 23:59 → 11:59 PM.
11 PM is the last hour of the calendar day; anything due 'by end of day' must be done before midnight.
24-hour to 12-hour chart for 23:00–23:59
| 24-hour | 12-hour |
|---|---|
| 23:00 | 11:00 PM |
| 23:05 | 11:05 PM |
| 23:10 | 11:10 PM |
| 23:15 | 11:15 PM |
| 23:20 | 11:20 PM |
| 23:25 | 11:25 PM |
| 23:30 | 11:30 PM |
| 23:35 | 11:35 PM |
| 23:40 | 11:40 PM |
| 23:45 | 11:45 PM |
| 23:50 | 11:50 PM |
| 23:55 | 11:55 PM |
Questions about What time is 23:59?
What time is 23:59?
23:59 is 11:59 PM. Hours 13–23 lose 12 and take PM: 23 − 12 = 11, so 23:59 → 11:59 PM.