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The specific time at which deployment for an operation commences. (US) L-Day For "Landing Day", 1 April 1945, the day Operation Iceberg (the invasion of Okinawa) began. [5] M-Day The day on which mobilization commences or is due to commence. (NATO) N-Day The unnamed day an active duty unit is notified for deployment or redeployment. (US) O-Day
The master atomic clock ensemble at the U.S. Naval Observatory in Washington D.C., which provides the time standard for the U.S. Department of Defense. [1] The rack mounted units in the background are caesium beam clocks. The black units in the foreground are hydrogen maser standards.
In American English, the term military time is a synonym for the 24-hour clock. [8] In the US, the time of day is customarily given almost exclusively using the 12-hour clock notation, which counts the hours of the day as 12, 1, ..., 11 with suffixes a.m. and p.m. distinguishing the two diurnal repetitions of this sequence.
The military time zones are a standardized, uniform set of time zones for expressing time across different regions of the world, named after the NATO phonetic alphabet. The Zulu time zone (Z) is equivalent to Coordinated Universal Time (UTC) and is often referred to as the military time zone.
Let There Be Light—known to the U.S. Army as PMF 5019—is a documentary film directed by American filmmaker John Huston (1906–1987). It was the last in a series of four films [1] directed by Huston while serving in the U.S. Army Signal Corps during World War II.
The Clock is a film by video artist Christian Marclay.It is a looped 24-hour video supercut (montage of scenes from film and television) that feature clocks or timepieces. . The artwork itself functions as a clock: its presentation is synchronized with the local time, resulting in the time shown in a scene being the actual t
Sector clock. A sector clock or colour change clock was a round colour-coded clock used at military airfields and observation posts in the United Kingdom to help track the movements of enemy aircraft and coordinate and control air defences.
In communications messages, a date-time group (DTG) is a set of characters, usually in a prescribed format, used to express the year, the month, the day of the month, the hour of the day, the minute of the hour, and the time zone, if different from Coordinated Universal Time (UTC).