ClockTotals

0400 Military Time Is 4:00 AM

By Sohail Manzoor · Updated

0400 = 4:00 AM

Zero four hundred

0400 in military time is 4:00 AM in standard time. Going the other way, 4 AM is written 0400. You say it “zero four hundred” or “zero four hundred hours”.

How to convert 0400 to standard time

The hour 04 is under 12, so it stays the same. Drop the leading zero, keep the minutes and add AM: 4:00 AM. To go back from 4 AM, write the hour with two digits, adding a zero in front, then the minutes, with no colon.

Where you see 0400

0400 UTC is midnight in New York during daylight saving time. That is why a UTC log from a summer evening in New York already shows the next day.

Times near 0400

MilitaryStandardSaid as
02002:00 AMZero two hundred
02152:15 AMZero two fifteen
02302:30 AMZero two thirty
02452:45 AMZero two forty-five
03003:00 AMZero three hundred
03153:15 AMZero three fifteen
03303:30 AMZero three thirty
03453:45 AMZero three forty-five
04004:00 AMZero four hundred
04154:15 AMZero four fifteen
04304:30 AMZero four thirty
04454:45 AMZero four forty-five
05005:00 AMZero five hundred
05155:15 AMZero five fifteen
05305:30 AMZero five thirty
05455:45 AMZero five forty-five
06006:00 AMZero six hundred

0400 Zulu (UTC) in US time zones

Add a Z, as in 0400Z, and the time is Zulu: UTC, the clock that aviation and the military share worldwide. Without the Z, 0400 is just local time.

ZoneIn winter (standard)In summer (daylight)
Eastern11:00 PM EST (day before)12:00 AM EDT
Central10:00 PM CST (day before)11:00 PM CDT (day before)
Mountain9:00 PM MST (day before)10:00 PM MDT (day before)
Pacific8:00 PM PST (day before)9:00 PM PDT (day before)
Alaska7:00 PM AKST (day before)8:00 PM AKDT (day before)
Hawaii6:00 PM HST (day before)No daylight saving

Every minute from 0400 to 0459

The last two digits are minutes, and they never change when you convert. Only the hour does, so every time from 0400 to 0459 sits in the 4 AM hour.

MilitaryStandardMilitaryStandardMilitaryStandardMilitaryStandard
04004:00 AM04154:15 AM04304:30 AM04454:45 AM
04014:01 AM04164:16 AM04314:31 AM04464:46 AM
04024:02 AM04174:17 AM04324:32 AM04474:47 AM
04034:03 AM04184:18 AM04334:33 AM04484:48 AM
04044:04 AM04194:19 AM04344:34 AM04494:49 AM
04054:05 AM04204:20 AM04354:35 AM04504:50 AM
04064:06 AM04214:21 AM04364:36 AM04514:51 AM
04074:07 AM04224:22 AM04374:37 AM04524:52 AM
04084:08 AM04234:23 AM04384:38 AM04534:53 AM
04094:09 AM04244:24 AM04394:39 AM04544:54 AM
04104:10 AM04254:25 AM04404:40 AM04554:55 AM
04114:11 AM04264:26 AM04414:41 AM04564:56 AM
04124:12 AM04274:27 AM04424:42 AM04574:57 AM
04134:13 AM04284:28 AM04434:43 AM04584:58 AM
04144:14 AM04294:29 AM04444:44 AM04594:59 AM

0400 military time questions

What is 0400 in regular time?

4:00 AM: 4 hours after midnight, with 20 hours to go before the next one.

What is 4 AM in military time?

0400. Morning hours just need two digits, so a zero goes in front.

Is 0400 AM or PM?

AM. Everything before 1200 is morning, and 0400 is 4 hours into the day.

How do you say 0400?

“Zero four hundred”, or “zero four hundred hours” on the radio. A leading 0 is said as zero rather than oh in most US services.

What is 0400 Zulu in Eastern Time?

In winter 0400Z is 11:00 PM in New York (EST) the day before. From the March clock change it is 12:00 AM EDT, because the gap shrinks from 5 hours to 4.

Related pages

Page by Sohail Manzoor, Software Engineer and Full-Stack Developer. Every conversion here comes from one 24-hour formula, and automated tests run it on all 1,440 minutes of the day in both directions.

Cite this page

APA: ClockTotals. (2026, October 21). 0400 Military Time Is 4:00 AM. https://clocktotals.com/military-time/0400/

MLA: “0400 Military Time Is 4:00 AM.” ClockTotals, 21 Oct. 2026, clocktotals.com/military-time/0400/.

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