2230 military time
2230 = 10:30 PM
2230 is half past 10 at night. With a colon it is 22:30.
Convert another time
How to read 2230
2230 is after noon, so subtract 12 from the hours: 22 − 12 = 10. Keep the minutes (30) and add PM: 10:30 PM. Do not subtract 10: 2230 is not 12:30 PM.
For hours 20 to 23, add 8 to the second digit: 22 gives 2 + 8 = 10, PM.
2230 falls in the night: 22 hours and 30 minutes after midnight, 93.8% of the way through the day, with 1 hour and 30 minutes left until the next midnight.
How to say it
Pilots and air traffic controllers say each digit: “two two three zero”. Off the radio, people usually read 2230 as two numbers.
Counting hours to and from 2230
Start and end times on a timesheet come down to this subtraction. The decimal column is the form many payroll systems want; the minutes to decimal chart covers every minute.
| Start | Length | Decimal |
|---|---|---|
| 0600 | 16 h 30 min | 16.50 |
| 0700 | 15 h 30 min | 15.50 |
| 0800 | 14 h 30 min | 14.50 |
| 0900 | 13 h 30 min | 13.50 |
| Add | Military | 12-hour |
|---|---|---|
| 1 h | 2330 | 11:30 PM |
| 2 h | 0030 | 12:30 AM (next day) |
| 4 h | 0230 | 2:30 AM (next day) |
| 8 h | 0630 | 6:30 AM (next day) |
| 10 h | 0830 | 8:30 AM (next day) |
| 12 h | 1030 | 10:30 AM (next day) |
2230Z: the same moment in other time zones
Written 2230Z, the time is in UTC, and the local clock depends on the zone and the season.
| Zone | Standard time | Summer time |
|---|---|---|
| US Eastern (New York) | 5:30 PM UTC−5 | 6:30 PM UTC−4 |
| US Central (Chicago) | 4:30 PM UTC−6 | 5:30 PM UTC−5 |
| US Mountain (Denver) | 3:30 PM UTC−7 | 4:30 PM UTC−6 |
| US Pacific (Los Angeles) | 2:30 PM UTC−8 | 3:30 PM UTC−7 |
| Alaska (Anchorage) | 1:30 PM UTC−9 | 2:30 PM UTC−8 |
| Hawaii (Honolulu) | 12:30 PM UTC−10 | no change |
| UK (London) | 10:30 PM UTC+0 | 11:30 PM UTC+1 |
| Central Europe (Berlin) | 11:30 PM UTC+1 | 12:30 AM (next day) UTC+2 |
| India | 4:00 AM (next day) UTC+5:30 | no change |
| Japan and South Korea | 7:30 AM (next day) UTC+9 | no change |
| Australia East (Sydney) | 8:30 AM (next day) UTC+10 | 9:30 AM (next day) UTC+11 |
For a particular date and city, use the time zone converter, which applies the exact daylight saving dates.
Nearby military times
The full chart is on the military time page.