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H-Hour. The specific time at which an operation or exercise commences, or is due to commence (this term is used also as a reference for the designation of days/hours before or after the event). (NATO); also known as 'Zero Hour'. I-Day. Used informally within the U.S. military bureaucracy to variously designate the "Implementation Day" or the ...
Precise Time and Time Interval. Precise Time and Time Interval ( PTTI) is a Department of Defense military and Global Positioning System standard which details a mechanism and waveform for distributing highly accurate timing information. [1] [2] It is similar to pulse per second (PPS) because it indicates the start of each second using a pulse.
Dwell time (military) In the military, dwell time is the amount of time that service members spend in their home station between deployments to war zones. It is used to calculate the deploy-to-dwell ratio. Dwell time is designed to allow service members a mental and physical break from combat and to give them time with their families.
Time on target ( TOT) is the military co-ordination of artillery fire by many weapons so that all the munitions arrive at the target at roughly the same time. The military standard for coordinating a time-on-target strike is plus or minus three seconds from the prescribed time of impact. In terms of target area, the historical standard was for ...
Discounted utility. In economics, discounted utility is the utility (desirability) of some future event, such as consuming a certain amount of a good, as perceived at the present time as opposed to at the time of its occurrence. [1] It is calculated as the present discounted value of future utility, and for people with time preference for ...
RFC 1233 in 1989 noted that the signs of the offsets were specified as opposite the common convention (e.g. A=UTC−1 instead of A=UTC+1), [13] and the use of military time zones in emails was deprecated in RFC 2822 in 2001. It is recommended to ignore such designations and treat all such time designations as UTC unless out-of-band information ...
Overview. Mean time between failures (MTBF) describes the expected time between two failures for a repairable system. For example, three identical systems starting to function properly at time 0 are working until all of them fail. The first system fails after 100 hours, the second after 120 hours and the third after 130 hours.
A unit of time is any particular time interval, used as a standard way of measuring or expressing duration. The base unit of time in the International System of Units (SI), and by extension most of the Western world, is the second, defined as about 9 billion oscillations of the caesium atom. The exact modern SI definition is " [The second] is ...