1600 at a glance
- 12-hour time
- 4:00 PM
- 24-hour clock
- 16:00
- Say it
- sixteen hundred hours
- Part of day
- Afternoon
- Minutes after midnight
- 960
- Minutes until midnight
- 480
- Decimal hours
- 16.00
- Share of the day gone
- 66.67%
How to convert 1600 to standard time
- The hour digits are 16, which is past noon. Subtract 12 from the hour: 16 − 12 = 4.
- Keep the minutes (00), insert a colon and add PM: 4:00 PM.
How to say 1600
| Style | How it sounds |
|---|---|
| Military (spoken) | “sixteen hundred hours” |
| Short form | “sixteen hundred” |
| Radio, digit by digit | “one six zero zero” |
| Civilian | “four o’clock in the afternoon” |
| Written 24-hour | 16:00 or 1600 |
On the hour, the minutes are spoken as “hundred”: 1600 is “sixteen hundred hours.”
1600 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 1600Z, this is the local time across the United States:
| Time zone | Standard time | Daylight time |
|---|---|---|
| Eastern (EST / EDT) | 11:00 AM — R | 12:00 PM — Q |
| Central (CST / CDT) | 10:00 AM — S | 11:00 AM — R |
| Mountain (MST / MDT) | 9:00 AM — T | 10:00 AM — S |
| Pacific (PST / PDT) | 8:00 AM — U | 9:00 AM — T |
| Alaska (AKST / AKDT) | 7:00 AM — V | 8:00 AM — U |
| Hawaii (HST) | 6:00 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 1600Z is 1100R. 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 1600 is your local time
- 1600 Eastern is 2100Z in winter (EST) and 2000Z in summer (EDT).
- 1600 Central is 2200Z in winter (CST) and 2100Z in summer (CDT).
- 1600 Mountain is 2300Z in winter (MST) and 2200Z in summer (MDT).
- 1600 Pacific is 0000Z in winter (PST) and 2300Z in summer (PDT).
Times around 1600
| Change | Military | Standard |
|---|---|---|
| −60 min | 1500 | 3:00 PM |
| −45 min | 1515 | 3:15 PM |
| −30 min | 1530 | 3:30 PM |
| −15 min | 1545 | 3:45 PM |
| This time | 1600 | 4:00 PM |
| +15 min | 1615 | 4:15 PM |
| +30 min | 1630 | 4:30 PM |
| +45 min | 1645 | 4:45 PM |
| +60 min | 1700 | 5:00 PM |
Shifts that start at 1600
- An 8-hour shift starting at 1600 ends at 0000 (12:00 AM the next day).
- A 10-hour shift starting at 1600 ends at 0200 (2:00 AM the next day).
- A 12-hour shift starting at 1600 ends at 0400 (4:00 AM the next day).
- To total the hours on a real time card with breaks, use the time card calculator.
1600 in everyday use
- From 1300 on, the hour digits run past 12. A quick trick for 1300 to 1959 is to take 2 away from the second digit: 16 → 4, so 1600 is 4:00 PM.
- The classic misreading is to drop the leading 1 and read 1600 as 6:00 — that would put the time two hours late.
Frequently asked questions
What is 1600 in regular time?
1600 is 4:00 PM in regular 12-hour time. Subtract 12 from the hour (16 − 12 = 4) and add PM.
Is 1600 AM or PM?
1600 is PM. Military times from 0000 to 1159 are AM and times from 1200 to 2359 are PM.
How do you say 1600 in military time?
Say “sixteen hundred hours.” In radio procedure each digit is spoken separately, so 1600 can also be read digit by digit.
What is 1600 Zulu in Eastern time?
1600Z is 11:00 AM Eastern Standard Time (UTC−5) and 12:00 PM Eastern Daylight Time (UTC−4).