What is 0331 in Military Time?
0331 military time equals
3:31 AM
How to Convert 0331
0331 falls in the morning half of the 24-hour clock, so the rule is: the hour matches standard time — just add AM.
3 = 3 → 3:31 AM — morning hours match directly (the minutes, 31, stay exactly the same).
Going the other way: 3:31 AM = 0331 — drop the AM and pad single-digit hours with a leading zero. Or skip the math — type 0331 into the military time converter and convert any time instantly on the home page.
Times Around 0331
See the whole day on one page: Military Time Chart or view the full 24-hour chart.
All Times From 0300 to 0359
Every minute of this hour has its own quick answer page:
- 0300 3:00 AM
- 0301 3:01 AM
- 0302 3:02 AM
- 0303 3:03 AM
- 0304 3:04 AM
- 0305 3:05 AM
- 0306 3:06 AM
- 0307 3:07 AM
- 0308 3:08 AM
- 0309 3:09 AM
- 0310 3:10 AM
- 0311 3:11 AM
- 0312 3:12 AM
- 0313 3:13 AM
- 0314 3:14 AM
- 0315 3:15 AM
- 0316 3:16 AM
- 0317 3:17 AM
- 0318 3:18 AM
- 0319 3:19 AM
- 0320 3:20 AM
- 0321 3:21 AM
- 0322 3:22 AM
- 0323 3:23 AM
- 0324 3:24 AM
- 0325 3:25 AM
- 0326 3:26 AM
- 0327 3:27 AM
- 0328 3:28 AM
- 0329 3:29 AM
- 0330 3:30 AM
- 0331 3:31 AM
- 0332 3:32 AM
- 0333 3:33 AM
- 0334 3:34 AM
- 0335 3:35 AM
- 0336 3:36 AM
- 0337 3:37 AM
- 0338 3:38 AM
- 0339 3:39 AM
- 0340 3:40 AM
- 0341 3:41 AM
- 0342 3:42 AM
- 0343 3:43 AM
- 0344 3:44 AM
- 0345 3:45 AM
- 0346 3:46 AM
- 0347 3:47 AM
- 0348 3:48 AM
- 0349 3:49 AM
- 0350 3:50 AM
- 0351 3:51 AM
- 0352 3:52 AM
- 0353 3:53 AM
- 0354 3:54 AM
- 0355 3:55 AM
- 0356 3:56 AM
- 0357 3:57 AM
- 0358 3:58 AM
- 0359 3:59 AM
When You'll See 0331
The small hours. Overnight crews — hospital night nurses, dispatchers, bakers starting early — see 0331 (3:31 AM) on their logs and handoff notes. Flights departing around 0331 are the first red-eyes of the morning.
To say it out loud, read the two pairs: "zero three thirty-one." In formal military usage you may also hear "zero three hundred thirty-one hours."
Frequently Asked Questions
Is 0331 AM or PM?
AM. Any military time from 0000 to 1159 is before noon. 0331 = 3:31 AM.
How do you say 0331 in military time?
"Zero three thirty-one." Whole hours get the "hundred" treatment (0300 is "zero three hundred"), but with minutes you read the two pairs.
What is 3:31 AM in military time?
0331. Morning hours match directly: drop the AM and pad to four digits.
Is 0331 the same as 3:31?
Yes — same time, two writing styles. Schedules in military format drop the colon (0331); European-style 24-hour clocks keep it (3:31). Both mean 3:31 AM.