2129 military time is 9:29 PM

9:29 PM in every format

12-hour clock	9:29 PM
24-hour clock	21:29
Military time	2129 hours
Military pronunciation	twenty-one twenty-nine hours
ISO 8601	T21:29:00
In words	Twenty-nine minutes past nine
Part of the day	Night
Minutes since midnight	1,289
Day progress	89.51%

Military time uses four digits without a colon and counts hours from 00 to 23. 2129 is pronounced “twenty-one twenty-nine hours”.

Hours 13–23 lose 12 and take PM: 21 − 12 = 9, so 21:29 → 9:29 PM.

When a time zone matters, the military adds a letter: 2129Z means 2129 in UTC, known as Zulu time.

2129 is 9:29 PM.

Say “twenty-one twenty-nine hours”.