0900 at a glance
- 12-hour time
- 9:00 AM
- 24-hour clock
- 09:00
- Say it
- zero nine hundred hours
- Part of day
- Morning
- Minutes after midnight
- 540
- Minutes until midnight
- 900
- Decimal hours
- 9.00
- Share of the day gone
- 37.5%
How to convert 0900 to standard time
- The hour digits are 09. Hours 01 to 11 are the same on both clocks — just drop the leading zero: 9.
- Put a colon before the minutes and add AM: 9:00 AM.
How to say 0900
| Style | How it sounds |
|---|---|
| Military (spoken) | “zero nine hundred hours” |
| Short form | “zero nine hundred” |
| Radio, digit by digit | “zero niner zero zero” — radio procedure says “niner” for 9 |
| Civilian | “nine o’clock in the morning” |
| Written 24-hour | 09:00 or 0900 |
On the hour, the minutes are spoken as “hundred”: 0900 is “zero nine hundred hours.” The leading zero is spoken too.
0900 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 0900Z, this is the local time across the United States:
| Time zone | Standard time | Daylight time |
|---|---|---|
| Eastern (EST / EDT) | 4:00 AM — R | 5:00 AM — Q |
| Central (CST / CDT) | 3:00 AM — S | 4:00 AM — R |
| Mountain (MST / MDT) | 2:00 AM — T | 3:00 AM — S |
| Pacific (PST / PDT) | 1:00 AM — U | 2:00 AM — T |
| Alaska (AKST / AKDT) | 12:00 AM — V | 1:00 AM — U |
| Hawaii (HST) | 11:00 PM (previous day) — 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 0900Z is 0400R. 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 0900 is your local time
- 0900 Eastern is 1400Z in winter (EST) and 1300Z in summer (EDT).
- 0900 Central is 1500Z in winter (CST) and 1400Z in summer (CDT).
- 0900 Mountain is 1600Z in winter (MST) and 1500Z in summer (MDT).
- 0900 Pacific is 1700Z in winter (PST) and 1600Z in summer (PDT).
Times around 0900
| Change | Military | Standard |
|---|---|---|
| −60 min | 0800 | 8:00 AM |
| −45 min | 0815 | 8:15 AM |
| −30 min | 0830 | 8:30 AM |
| −15 min | 0845 | 8:45 AM |
| This time | 0900 | 9:00 AM |
| +15 min | 0915 | 9:15 AM |
| +30 min | 0930 | 9:30 AM |
| +45 min | 0945 | 9:45 AM |
| +60 min | 1000 | 10:00 AM |
Shifts that start at 0900
- An 8-hour shift starting at 0900 ends at 1700 (5:00 PM).
- A 10-hour shift starting at 0900 ends at 1900 (7:00 PM).
- A 12-hour shift starting at 0900 ends at 2100 (9:00 PM).
- To total the hours on a real time card with breaks, use the time card calculator.
0900 in everyday use
- 0900 lands in the working morning, when appointments, classes and meetings fill calendars. Medical and aviation schedules still write it as 0900 so it can never be mistaken for 9:00 PM.
Frequently asked questions
What is 0900 in regular time?
0900 is 9:00 AM in regular 12-hour time.
Is 0900 AM or PM?
0900 is AM. Military times from 0000 to 1159 are AM and times from 1200 to 2359 are PM.
How do you say 0900 in military time?
Say “zero nine hundred hours.” In radio procedure each digit is spoken separately, so 0900 can also be read digit by digit.
What is 0900 Zulu in Eastern time?
0900Z is 4:00 AM Eastern Standard Time (UTC−5) and 5:00 AM Eastern Daylight Time (UTC−4).