0000 Military Time = 12:00 AM

In military protocol and international operations, 0000 (spoken as "Zero Hundred Hours") represents the precise start of the 24-hour calendar day. It aligns with 12:00 AM in standard civilian time. Zero hundred is universally utilized in naval deck logs, joint tactical operational orders (OPORDs), air freight dispatching, and hospital nursing shift rotations to establish an unambiguous baseline for all dated records. Unlike civilian clocks where the phrase "12 AM" often causes confusion between the onset of midnight and the peak of noon, recording 0000 guarantees that emergency dispatchers, flight crews, and military watchstanders synchronize across global time zones without miscalculating duty rotations or critical log entries.

Whether transcribing patient medicine logs, tracking transcontinental airline flight manifests, or executing field radio checks, using 0000 prevents fatal time-shift errors inherent in standard 12-hour civil clocks.