2331 in military time is 11:31 PM
- Say it
- Twenty-three thirty-one hours
- On the radio
- Two Three Three One Zulu
TOO TREE TREE WUN ZOO-LOO - Time of day
- In the night
Looking for the closest quarter hour? See 2330 (11:30 PM).
2331 from where you are
Checking your clock…
Working out your local time…
| Zone | Offset | Military | Regular |
|---|---|---|---|
| Zulu (UTC) | UTC+0 | 2331 | 11:31 PM |
| Eastern Daylight (Quebec) | UTC-4 | 1931 | 7:31 PM |
| Eastern Standard (Romeo) | UTC-5 | 1831 | 6:31 PM |
| Pacific Standard (Uniform) | UTC-8 | 1531 | 3:31 PM |
Where 2331 falls on a shift
Navy watches are fixed. Hospital shifts vary by facility; these are the common patterns.
| Mid watch | 0000–0400 |
| Morning watch | 0400–0800 |
| Forenoon watch | 0800–1200 |
| Afternoon watch | 1200–1600 |
| First dog watch | 1600–1800 |
| Last dog watch | 1800–2000 |
| First watch | 2000–2400 |
| Day shift, 12-hour | 0700–1900 |
| Night shift, 12-hour | 1900–0700 |
| Day shift, 8-hour | 0700–1500 |
| Evening shift, 8-hour | 1500–2300 |
| Night shift, 8-hour | 2300–0700 |
Every minute from 2300 to 2359
2331 questions
What is 2331 in regular time?
2331 in military time is 11:31 PM in regular 12-hour time. The hour 23 is over 12, so subtract 12 (23 − 12 = 11) and add PM: 11:31 PM.
How do you say 2331 in military time?
Say "twenty-three thirty-one hours." Over the radio, read it digit by digit: "Two Three Three One Zulu" when it is Zulu time.
What is 11:31 PM in military time?
11:31 PM is 2331 in military time, written with four digits and no colon.
Is 2331 AM or PM?
2331 is PM. Military times from 1200 to 2359 are after noon, so 2331 is 11:31 PM.
What is 2331 Zulu in US time?
2331Z (Zulu, UTC) is 6:31 PM Eastern Standard Time, 7:31 PM Eastern Daylight Time, and 3:31 PM Pacific Standard Time.
Need a different time? Use the converter or drill yourself for 60 seconds.