24-hour clock
Runs to midnight
A 24-hour clock counts hours from 0 to 23 rather than cycling through 12 twice with AM and PM.
Midnight is 0:00, noon is 12:00, and 3 PM becomes 15:00.
Standard in military, aviation, and medical contexts, as well as most of the world outside the United States: The train departs at 14:30.
Twelve o'clock at night
- noonDay's exact middle
- oh-dark-thirtySlang for very early
- digitalOf discrete data
- analogComparable equivalent
chronometer · quartz · time signal · synchronization · Greenwich Mean Time · timepiece · broadcast · aviation
Bantu language of Natal
- UTCUniversal time standard
- GMTGlobal time baseline
- synchronizeAlign timing precisely
- operationsPlanned systematic activities
briefing · logistics · coordination · deployment · NATO · Bravo · Charlie · Delta
midnight
Twelve o'clock at night
- noonDay's exact middle
- oh-dark-thirtySlang for very early
- digitalOf discrete data
analog · chronometer · quartz · time signal · synchronization · Greenwich Mean Time · timepiece · broadcast · aviation · timestamp
Zulu
Bantu language of Natal
- UTCUniversal time standard
- GMTGlobal time baseline
- synchronizeAlign timing precisely
operations · briefing · logistics · coordination · deployment · NATO · Bravo · Charlie · Delta · Echo
timetable
Arranged list of events
- itineraryPlanned sequence of destinations
- departureAct of going away
- arrivalAct of reaching destination
appointment · flight · train · bus · shift · roster · planner · booking · reservation · slot
dawn
Day's first glow
daybreak · nightfall · morning · afternoon · evening · nighttime · daytime · diurnal · nocturnal · rhythm
- timekeepingwatch, watches, timer, calendar, hourglass
- clockswristwatch, pocket watch, digital watch, smartwatch, marine chronometer
- time conceptscalendar, minute, second, week, month
- military time1000, 1100, 1200, 1300, 1400
- time zonesEST, PST, GMT, CST, MST
- localizationlocalization, locale, translation memory, glossaries, text translation