Date and time representation system widely used in computing
"January 1, 1970" redirects here. Not to be confused with January 1, 1970 (date).
"Epoch time" redirects here. For other epochs, see Epoch (computing). For the newspaper, see The Epoch Times.
Current Unix time 1714652638 (update) 2024-05-02T12:23:58+00:00
Unix time passed 1000000000 seconds on 2001-09-09T01:46:40Z.[1] It was celebrated in Copenhagen, Denmark at a party held by the Danish UNIX User Group at 03:46:40 local time.
Unix time[a] is a date and time representation widely used in computing. It measures time by the number of non-leap seconds that have elapsed since 00:00:00 UTC on 1 January 1970, the Unix epoch. In modern computing, values are sometimes stored with higher granularity, such as microseconds or nanoseconds.
Unix time originated as the system time of Unix operating systems. It has come to be widely used in other computer operating systems, file systems, programming languages, and databases.
^Farhad, Manjoo (8 September 2001). "Unix Tick Tocks to a Billion". Wired. ISSN 1059-1028. Archived from the original on 11 September 2022. Retrieved 16 October 2022.
^"The Open Group Base Specifications Issue 7, Rationale: Base Definitions, section A.4 General Concepts". The Open Group. Archived from the original on 15 November 2017. Retrieved 9 September 2019.
^"The Open Group Base Specifications Issue 7, section 4.16 Seconds Since the Epoch". The Open Group. Archived from the original on 22 December 2017. Retrieved 22 January 2017.
^Matthew, Neil; Stones, Richard (2008). "The Linux Environment". Beginning Linux Programming. Indianapolis, Indiana, US: Wiley. p. 148. ISBN 978-0-470-14762-7.
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