PM · afternoon
1621 Military Time = 4:21 PM
Answer
1621 = 4:21 PM
“sixteen twenty-one hours”
Subtract 12 from the hour (16 − 12 = 4) and add PM, so 1621 = 4:21 PM.
- Military time
- 1621
- 24-hour clock
- 16:21
- 12-hour time
- 4:21 PM
- Said aloud
- sixteen twenty-one hours
- Minutes since midnight
- 981
- Time until midnight
- 7 h 39 min
Enter 3–4 digits, e.g. 0800, 1430, 2359
Valid timeEnter the time and choose AM or PM
Converted result
Spoken: sixteen twenty-one hours
Looking for the AM time?
4:21 AM is 0421 in military time
How to Convert 1621 to Standard Time
1621 converts to 4:21 PM in 3 steps:
- 1621 is greater than 1259, so subtract 1200: 1621 − 1200 = 421.
- Insert a colon before the last two digits: 4:21.
- Add PM, because hours 13 to 23 are afternoon and evening: 4:21 PM.
To go the other way, 4:21 PM becomes 1621: add 12 to 4 to get 16, then remove the colon.
1621 Across U.S. Time Zones
When it is 1621 Eastern time, it is 1521 Central, 1421 Mountain and 1321 Pacific. Zulu (UTC) depends on daylight saving time.
| Time zone | Military time | Standard time |
|---|---|---|
| Eastern (ET) | 1621 | 4:21 PM |
| Central (CT) | 1521 | 3:21 PM |
| Mountain (MT) | 1421 | 2:21 PM |
| Pacific (PT) | 1321 | 1:21 PM |
| Alaska (AKT) | 1221 | 12:21 PM |
| Zulu / UTC (winter, EST) | 2121Z | 9:21 PM |
| Zulu / UTC (summer, EDT) | 2021Z | 8:21 PM |
Convert other zones with the military time zone converter.
How to Say 1621
1621 is said “sixteen twenty-one hours” in formal military use. Casual speech drops “hours”: “sixteen twenty-one.” Written in 24-hour clock style, 1621 is 16:21.
Nearby military times
1621 military time: FAQ
What time is 1621 in military time?
1621 is 4:21 PM in standard 12-hour time. Subtract 12 from the hour (16 − 12 = 4) and add PM, so 1621 = 4:21 PM.
What is 4:21 PM in military time?
4:21 PM is 1621 in military time, written 16:21 on a 24-hour clock.
How do you say 1621 in military time?
1621 is said “sixteen twenty-one hours”.
Is 1621 AM or PM?
1621 is PM: 4:21 PM. The same minutes in the other half of the day, 4:21 AM, are 0421.
See every time in the military time chart, or convert any other time with themilitary time converter.