2100 Military Time
2100 = 9:00 PM. Say it: “twenty-one hundred hours.”
9:00 PM
twenty-one hundred hours
How 2100 converts to 9:00 PM
The hour 21 is in 13–23, so it's PM: subtract 12 → 9. Minutes (0) don't change. Result: 9:00 PM.
Bedtime hour for most, login hour for night crews — 2100 is when the two shifts trade places. If you log shifts in this format, the time card calculator accepts 24-hour times directly.
2100 at a glance
| 24-hour (military) | 2100 |
|---|---|
| 12-hour (regular) | 9:00 PM |
| Spoken | “twenty-one hundred hours” |
| Part of day | Afternoon / evening (PM) |
| On a timesheet | 21:00 |
A shift that starts at 2100
An 8-hour shift starting at 2100 ends at 0500 (clock out 5:00 AM). A 12-hour shift — the nursing standard — runs to 0900. Working from 2100 to 1700 is 20 hours; subtract an unpaid 30-minute lunch and the payable total is 19.5.
2100 — questions people ask
What is 2100 military time in 12-hour format?
2100 military time = 9:00 PM. The hour 21 is in 13–23, so it's PM: subtract 12 → 9. Minutes (0) don't change. Result: 9:00 PM.
How do you say 2100?
Say the hour, then the minutes: “twenty-one hundred hours.” In casual settings many people just say “9.”
Is 2100 AM or PM?
PM — hours 1300–2359 are afternoon and evening, so 2100 = 9:00 PM.