2359 Military Time = 11:59 PM
Twenty-Three Fifty Nine Hours. Operating role: End-of-Day Cutoff & Operational Midnight.
Military Format
2359
Continuous 4-digit notation
24-Hour Digital
23:59
Standard ISO 8601 clock format
Standard Civilian
11:59 PM
12-hour AM/PM civil clock
Spoken / Phonetic
Twenty-Three Fifty Nine Hours
Radio & verbal pronunciation
Real-World Operational Context & Shift Use
The timestamp 2359 (spoken as "Twenty-Three Fifty-Nine Hours") represents 11:59 PM in standard civilian time and serves as the official administrative close of the operating day. While some civilian systems loosely refer to 2400 as midnight, standard military doctrine, NATO STANAG protocols, aviation flight logs, and international maritime registers strictly designate 2359 as the final timestamp of the current calendar date. By closing logs, daily status reports (SITREPs), and electronic flight manifests at 2359 before cycling directly into 0000 of the next date, operations centers ensure that legal documentation and payroll hours never straddle ambiguous midnight boundaries.
Whether transcribing patient medicine logs, tracking transcontinental airline flight manifests, or executing field radio checks, using 2359 prevents fatal time-shift errors inherent in standard 12-hour civil clocks.
How to Convert 2359 Military Time
- ✓The hour is greater than 12, so subtract 12: 23 − 12 = 11.
- ✓2359 = 11:59 PM.
Frequently Asked Questions About 2359
Is 2359 army time the same as 11:59 PM civilian time?
Yes, 2359 in military time equals exactly 11:59 PM in standard 12-hour civilian time. Military time uses a continuous 24-hour scale from 0000 to 2359, which eliminates the need for "AM" or "PM" designations and prevents costly scheduling mistakes.
How do you pronounce or say 2359 in military time?
You pronounce 2359 as "Twenty-Three Fifty Nine Hours". In professional military and aviation communication, the leading zeros and digits are clearly articulated to ensure radio transmissions cannot be misunderstood.
How do you quickly convert 2359 to standard 12-hour time?
To convert 2359 to 12-hour civilian time, simply subtract 12 from the first two digits (23 − 12 = 11), keep the minute digits (59), and add "PM". That gives you 11:59 PM.