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→See also: Unix Time in Literature |
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'''Unix time''', or '''POSIX time''', is a system for describing points in [[time]]. It is widely used not only on [[Unix]]-like operating systems but in many other computing systems, including the [[Java programming language]]. It is an encoding of [[Coordinated Universal Time|UTC]], and is sufficiently similar to a linear representation of the passage of time that it is frequently mistaken for one. The main complication is the [[leap second]]s of UTC time.
==Definition.==
There are two layers of encoding that make up Unix time, and they can be usefully separated. The first layer encodes a point in time as a [[scalar]] [[real number]], and the second encodes that number as a sequence of [[bit]]s or in some other manner.
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