Reference & AI

1800 Military Time

AR 25-50

1800 on the 24-hour clock is 6:00 PM. Every minute of the hour, the Zulu time by U.S. time zone and how to say it are below.

Reviewed by Guilherme Correia, active-duty U.S. Air Force

1800 in standard time

6:00 PM

Read aloud

eighteen hundred

The hour before and after

1700 · 1900

From 1300 on, subtract 12 from the first two digits and add p.m.: 18 minus 12 is 6, so 1800 is 6:00 p.m.

1800 to 1859: every minute of the hour

The first two digits stay 18; the last two are the minutes.

1800 to 1814 in standard time
MilitaryStandard
18006:00 p.m.
18016:01 p.m.
18026:02 p.m.
18036:03 p.m.
18046:04 p.m.
18056:05 p.m.
18066:06 p.m.
18076:07 p.m.
18086:08 p.m.
18096:09 p.m.
18106:10 p.m.
18116:11 p.m.
18126:12 p.m.
18136:13 p.m.
18146:14 p.m.
1815 to 1829 in standard time
MilitaryStandard
18156:15 p.m.
18166:16 p.m.
18176:17 p.m.
18186:18 p.m.
18196:19 p.m.
18206:20 p.m.
18216:21 p.m.
18226:22 p.m.
18236:23 p.m.
18246:24 p.m.
18256:25 p.m.
18266:26 p.m.
18276:27 p.m.
18286:28 p.m.
18296:29 p.m.
1830 to 1844 in standard time
MilitaryStandard
18306:30 p.m.
18316:31 p.m.
18326:32 p.m.
18336:33 p.m.
18346:34 p.m.
18356:35 p.m.
18366:36 p.m.
18376:37 p.m.
18386:38 p.m.
18396:39 p.m.
18406:40 p.m.
18416:41 p.m.
18426:42 p.m.
18436:43 p.m.
18446:44 p.m.
1845 to 1859 in standard time
MilitaryStandard
18456:45 p.m.
18466:46 p.m.
18476:47 p.m.
18486:48 p.m.
18496:49 p.m.
18506:50 p.m.
18516:51 p.m.
18526:52 p.m.
18536:53 p.m.
18546:54 p.m.
18556:55 p.m.
18566:56 p.m.
18576:57 p.m.
18586:58 p.m.
18596:59 p.m.

1800 local time in Zulu (UTC)

From the FAA's table: add the hours shown to standard time, one hour less in daylight time.

1800 in each U.S. time zone, converted to Zulu time
1800 in this zoneStandard timeDaylight time
Eastern2300Z2200Z
Central0000Z next day2300Z
Mountain0100Z next day0000Z next day
Pacific0200Z next day0100Z next day
Alaska0300Z next day0200Z next day
Hawaii0400Z next day0300Z next day

How 1800 is written and said

AR 25-50, para. 1-26: "Military time will be expressed in a group of four digits, from 0001 to 2400, based on the 24–hour clock system. The first two digits represent the hour after midnight and the last two digits represent the minutes." So 1800 is hour 18, minute 00: 6:00 p.m.

Said aloud it is "eighteen hundred". On paper the same paragraph says "The word "hours" will not be used in conjunction with military time," and that military time is used for memorandums while civilian time is used in letters.

Every hour in military time

For any other time, in either direction, use the military time converter.

Keep going

AR 25-50, Preparing and Managing Correspondence, para. 1-26 (10 October 2020, administrative revisions through 4 October 2024) · Federal Aviation Administration, Aeronautical Information Manual, Chapter 4, Section 2, paragraph 4-2-12, Time (read November 11, 2026)

Results are estimates. Always verify with your finance office.

Reviewed by Guilherme Correia · Military Toolkit editorial

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Official sources: AR 25-50 on armypubs.army.mil · FAA Aeronautical Information Manual, paragraph 4-2-12.