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2100 Military Time = 9:00 PM

Twenty-One Hundred Hours.

Military

2100

24-hour

21:00

Standard

9:00 PM

Spoken

Twenty-One Hundred Hours

How we calculate it

  • The hour is greater than 12, so subtract 12: 21 − 12 = 9.
  • 2100 = 9:00 PM.