What is 0040 in Military Time?
0040 military time equals
12:40 AM
How to Convert 0040
0040 sits in the first hour after midnight. The rule for 0000–0059: the standard hour is 12, and the label is AM.
00 = 12 → 12:40 AM AM — the first hour after midnight counts as 12 AM (the minutes, 40, stay exactly the same).
Going the other way: 12:40 AM counts as hour 00 — the hour after midnight — so it becomes 0040. Or skip the math — type 0040 into the military time converter and convert any time instantly on the home page.
Times Around 0040
See the whole day on one page: Military Time Chart or view the full 24-hour chart.
All Times From 0000 to 0059
Every minute of this hour has its own quick answer page:
- 0000 12:00 AM (Midnight)
- 0001 12:01 AM
- 0002 12:02 AM
- 0003 12:03 AM
- 0004 12:04 AM
- 0005 12:05 AM
- 0006 12:06 AM
- 0007 12:07 AM
- 0008 12:08 AM
- 0009 12:09 AM
- 0010 12:10 AM
- 0011 12:11 AM
- 0012 12:12 AM
- 0013 12:13 AM
- 0014 12:14 AM
- 0015 12:15 AM
- 0016 12:16 AM
- 0017 12:17 AM
- 0018 12:18 AM
- 0019 12:19 AM
- 0020 12:20 AM
- 0021 12:21 AM
- 0022 12:22 AM
- 0023 12:23 AM
- 0024 12:24 AM
- 0025 12:25 AM
- 0026 12:26 AM
- 0027 12:27 AM
- 0028 12:28 AM
- 0029 12:29 AM
- 0030 12:30 AM
- 0031 12:31 AM
- 0032 12:32 AM
- 0033 12:33 AM
- 0034 12:34 AM
- 0035 12:35 AM
- 0036 12:36 AM
- 0037 12:37 AM
- 0038 12:38 AM
- 0039 12:39 AM
- 0040 12:40 AM
- 0041 12:41 AM
- 0042 12:42 AM
- 0043 12:43 AM
- 0044 12:44 AM
- 0045 12:45 AM
- 0046 12:46 AM
- 0047 12:47 AM
- 0048 12:48 AM
- 0049 12:49 AM
- 0050 12:50 AM
- 0051 12:51 AM
- 0052 12:52 AM
- 0053 12:53 AM
- 0054 12:54 AM
- 0055 12:55 AM
- 0056 12:56 AM
- 0057 12:57 AM
- 0058 12:58 AM
- 0059 12:59 AM
When You'll See 0040
0040 sits in the first minutes of a new day. Overnight hospital shifts often run 1900–0700, so 0040 (12:40 AM) lands mid-shift — vital-sign rounds, medication passes, and dispatch logs all carry this timestamp. You'll also see 0040 on red-eye flight schedules and 24-hour security reports.
To say it out loud, read the two pairs: "zero forty." In formal military usage you may also hear "zero hundred forty hours."
Frequently Asked Questions
Is 0040 AM or PM?
AM. 0000–0059 is the hour right after midnight: 0040 = 12:40 AM.
How do you say 0040 in military time?
"Zero forty." Whole hours get the "hundred" treatment (0000 is "zero hundred"), but with minutes you read the two pairs.
What is 12:40 AM in military time?
0040. The hour after midnight counts as hour 00, so 12:40 AM becomes 0040.
Is 0040 the same as 0:40?
Yes — same time, two writing styles. Schedules in military format drop the colon (0040); European-style 24-hour clocks keep it (0:40). Both mean 12:40 AM.