1000 at a glance
- 12-hour time
- 10:00 AM
- 24-hour clock
- 10:00
- Say it
- ten hundred hours
- Part of day
- Morning
- Minutes after midnight
- 600
- Minutes until midnight
- 840
- Decimal hours
- 10.00
- Share of the day gone
- 41.67%
How to convert 1000 to standard time
- The hour digits are 10. Hours 10 and 11 need no change at all.
- Insert a colon before the minutes and add AM: 10:00 AM.
How to say 1000
| Style | How it sounds |
|---|---|
| Military (spoken) | “ten hundred hours” |
| Short form | “ten hundred” |
| Radio, digit by digit | “one zero zero zero” |
| Civilian | “ten o’clock in the morning” |
| Written 24-hour | 10:00 or 1000 |
On the hour, the minutes are spoken as “hundred”: 1000 is “ten hundred hours.”
1000 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 1000Z, this is the local time across the United States:
| Time zone | Standard time | Daylight time |
|---|---|---|
| Eastern (EST / EDT) | 5:00 AM — R | 6:00 AM — Q |
| Central (CST / CDT) | 4:00 AM — S | 5:00 AM — R |
| Mountain (MST / MDT) | 3:00 AM — T | 4:00 AM — S |
| Pacific (PST / PDT) | 2:00 AM — U | 3:00 AM — T |
| Alaska (AKST / AKDT) | 1:00 AM — V | 2:00 AM — U |
| Hawaii (HST) | 12:00 AM — 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 1000Z is 0500R. 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 1000 is your local time
- 1000 Eastern is 1500Z in winter (EST) and 1400Z in summer (EDT).
- 1000 Central is 1600Z in winter (CST) and 1500Z in summer (CDT).
- 1000 Mountain is 1700Z in winter (MST) and 1600Z in summer (MDT).
- 1000 Pacific is 1800Z in winter (PST) and 1700Z in summer (PDT).
Times around 1000
| Change | Military | Standard |
|---|---|---|
| −60 min | 0900 | 9:00 AM |
| −45 min | 0915 | 9:15 AM |
| −30 min | 0930 | 9:30 AM |
| −15 min | 0945 | 9:45 AM |
| This time | 1000 | 10:00 AM |
| +15 min | 1015 | 10:15 AM |
| +30 min | 1030 | 10:30 AM |
| +45 min | 1045 | 10:45 AM |
| +60 min | 1100 | 11:00 AM |
Shifts that start at 1000
- An 8-hour shift starting at 1000 ends at 1800 (6:00 PM).
- A 10-hour shift starting at 1000 ends at 2000 (8:00 PM).
- A 12-hour shift starting at 1000 ends at 2200 (10:00 PM).
- To total the hours on a real time card with breaks, use the time card calculator.
1000 in everyday use
- 1000 lands in the working morning, when appointments, classes and meetings fill calendars. Medical and aviation schedules still write it as 1000 so it can never be mistaken for 10:00 PM.
- From 1000 to 1159 the military and 12-hour clocks show the same hour digits, so 1000 reads almost the same as 10:00 AM — only the colon and AM are missing.
Frequently asked questions
What is 1000 in regular time?
1000 is 10:00 AM in regular 12-hour time.
Is 1000 AM or PM?
1000 is AM. Military times from 0000 to 1159 are AM and times from 1200 to 2359 are PM.
How do you say 1000 in military time?
Say “ten hundred hours.” In radio procedure each digit is spoken separately, so 1000 can also be read digit by digit.
What is 1000 Zulu in Eastern time?
1000Z is 5:00 AM Eastern Standard Time (UTC−5) and 6:00 AM Eastern Daylight Time (UTC−4).