2138 military time is 9:38 PM

9:38 PM in every format

12-hour clock	9:38 PM
24-hour clock	21:38
Military time	2138 hours
Military pronunciation	twenty-one thirty-eight hours
ISO 8601	T21:38:00
In words	Twenty-two minutes to ten
Part of the day	Night
Minutes since midnight	1,298
Day progress	90.14%

Military time uses four digits without a colon and counts hours from 00 to 23. 2138 is pronounced “twenty-one thirty-eight hours”.

Hours 13–23 lose 12 and take PM: 21 − 12 = 9, so 21:38 → 9:38 PM.

When a time zone matters, the military adds a letter: 2138Z means 2138 in UTC, known as Zulu time.

2138 is 9:38 PM.

Say “twenty-one thirty-eight hours”.