2230 at a glance
- 12-hour time
- 10:30 PM
- 24-hour clock
- 22:30
- Say it
- twenty-two thirty hours
- Part of day
- Night
- Minutes after midnight
- 1,350
- Minutes until midnight
- 90
- Decimal hours
- 22.50
- Share of the day gone
- 93.75%
How to convert 2230 to standard time
- The hour digits are 22, which is past noon. Subtract 12 from the hour: 22 − 12 = 10.
- Keep the minutes (30), insert a colon and add PM: 10:30 PM.
How to say 2230
| Style | How it sounds |
|---|---|
| Military (spoken) | “twenty-two thirty hours” |
| Radio, digit by digit | “two two three zero” |
| Civilian | “half past ten at night” |
| Written 24-hour | 22:30 or 2230 |
Off the hour, say the hour pair and then the minutes: 22 → “twenty-two”, 30 → “thirty.” Adding “hours” at the end is standard in military speech but optional elsewhere.
2230 Zulu (UTC) in US time zones
Military and aviation schedules give times in Zulu — Coordinated Universal Time — so that everyone works from one clock. When a message says 2230Z, this is the local time across the United States:
| Time zone | Standard time | Daylight time |
|---|---|---|
| Eastern (EST / EDT) | 5:30 PM — R | 6:30 PM — Q |
| Central (CST / CDT) | 4:30 PM — S | 5:30 PM — R |
| Mountain (MST / MDT) | 3:30 PM — T | 4:30 PM — S |
| Pacific (PST / PDT) | 2:30 PM — U | 3:30 PM — T |
| Alaska (AKST / AKDT) | 1:30 PM — V | 2:30 PM — U |
| Hawaii (HST) | 12:30 PM — W | No daylight time |
The letter after each time is that zone’s military time-zone letter: Eastern standard time is R (Romeo, UTC−5), so 2230Z is 1730R. Daylight time runs from the second Sunday in March to the first Sunday in November; Hawaii and most of Arizona stay on standard time all year.
If 2230 is your local time
- 2230 Eastern is 0330Z in winter (EST) and 0230Z in summer (EDT).
- 2230 Central is 0430Z in winter (CST) and 0330Z in summer (CDT).
- 2230 Mountain is 0530Z in winter (MST) and 0430Z in summer (MDT).
- 2230 Pacific is 0630Z in winter (PST) and 0530Z in summer (PDT).
Times around 2230
| Change | Military | Standard |
|---|---|---|
| −60 min | 2130 | 9:30 PM |
| −45 min | 2145 | 9:45 PM |
| −30 min | 2200 | 10:00 PM |
| −15 min | 2215 | 10:15 PM |
| This time | 2230 | 10:30 PM |
| +15 min | 2245 | 10:45 PM |
| +30 min | 2300 | 11:00 PM |
| +45 min | 2315 | 11:15 PM |
| +60 min | 2330 | 11:30 PM |
Shifts that start at 2230
- An 8-hour shift starting at 2230 ends at 0630 (6:30 AM the next day).
- A 10-hour shift starting at 2230 ends at 0830 (8:30 AM the next day).
- A 12-hour shift starting at 2230 ends at 1030 (10:30 AM the next day).
- To total the hours on a real time card with breaks, use the time card calculator.
2230 in everyday use
- 2230 is late evening — 10:30 PM. Quiet hours at many campgrounds, hotels and apartment buildings start around 2200, and night-shift handovers often happen in this window.
- For 2000 to 2359, subtract 12 from the whole hour: 22 − 12 = 10, so 2230 is 10:30 PM. The day ends 90 minutes later, when the clock rolls over to 0000.
Frequently asked questions
What is 2230 in regular time?
2230 is 10:30 PM in regular 12-hour time. Subtract 12 from the hour (22 − 12 = 10) and add PM.
Is 2230 AM or PM?
2230 is PM. Military times from 0000 to 1159 are AM and times from 1200 to 2359 are PM.
How do you say 2230 in military time?
Say “twenty-two thirty hours.” In radio procedure each digit is spoken separately, so 2230 can also be read digit by digit.
What is 2230 Zulu in Eastern time?
2230Z is 5:30 PM Eastern Standard Time (UTC−5) and 6:30 PM Eastern Daylight Time (UTC−4).