PM · afternoon
1640 Military Time = 4:40 PM
Answer
1640 = 4:40 PM
“sixteen forty hours”
Subtract 12 from the hour (16 − 12 = 4) and add PM, so 1640 = 4:40 PM.
- Military time
- 1640
- 24-hour clock
- 16:40
- 12-hour time
- 4:40 PM
- Said aloud
- sixteen forty hours
- Minutes since midnight
- 1000
- Time until midnight
- 7 h 20 min
Enter 3–4 digits, e.g. 0800, 1430, 2359
Valid timeEnter the time and choose AM or PM
Converted result
Spoken: sixteen forty hours
Looking for the AM time?
4:40 AM is 0440 in military time
How to Convert 1640 to Standard Time
1640 converts to 4:40 PM in 3 steps:
- 1640 is greater than 1259, so subtract 1200: 1640 − 1200 = 440.
- Insert a colon before the last two digits: 4:40.
- Add PM, because hours 13 to 23 are afternoon and evening: 4:40 PM.
To go the other way, 4:40 PM becomes 1640: add 12 to 4 to get 16, then remove the colon.
1640 Across U.S. Time Zones
When it is 1640 Eastern time, it is 1540 Central, 1440 Mountain and 1340 Pacific. Zulu (UTC) depends on daylight saving time.
| Time zone | Military time | Standard time |
|---|---|---|
| Eastern (ET) | 1640 | 4:40 PM |
| Central (CT) | 1540 | 3:40 PM |
| Mountain (MT) | 1440 | 2:40 PM |
| Pacific (PT) | 1340 | 1:40 PM |
| Alaska (AKT) | 1240 | 12:40 PM |
| Zulu / UTC (winter, EST) | 2140Z | 9:40 PM |
| Zulu / UTC (summer, EDT) | 2040Z | 8:40 PM |
Convert other zones with the military time zone converter.
How to Say 1640
1640 is said “sixteen forty hours” in formal military use. Casual speech drops “hours”: “sixteen forty.” Written in 24-hour clock style, 1640 is 16:40.
Nearby military times
1640 military time: FAQ
What time is 1640 in military time?
1640 is 4:40 PM in standard 12-hour time. Subtract 12 from the hour (16 − 12 = 4) and add PM, so 1640 = 4:40 PM.
What is 4:40 PM in military time?
4:40 PM is 1640 in military time, written 16:40 on a 24-hour clock.
How do you say 1640 in military time?
1640 is said “sixteen forty hours”.
Is 1640 AM or PM?
1640 is PM: 4:40 PM. The same minutes in the other half of the day, 4:40 AM, are 0440.
See every time in the military time chart, or convert any other time with themilitary time converter.