Editing Unix time (section)

== Notable events in Unix time ==
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Unix enthusiasts have a history of holding "time_t parties" (pronounced "time [[Tea party|tea parties]]") to celebrate significant values of the Unix time number.<ref name="party-like-its=1234567890">{{Cite magazine |url=https://www.wired.com/gadgetlab/2009/02/unix-lovers-to/ |title=Unix Lovers to Party Like It's 1234567890 |magazine=Wired |last=Tweney |first=Dylan |date=12 February 2009 |access-date=12 March 2017 |archive-date=29 March 2014 |archive-url=https://web.archive.org/web/20140329022430/http://www.wired.com/gadgetlab/2009/02/unix-lovers-to/ |url-status=live }}</ref><ref>{{cite web |url=https://slashdot.org/story/05/03/17/169200/date-s-turning-1111111111 |title=Slashdot {{!}} date +%s Turning 1111111111 |date=17 March 2005 |access-date=12 January 2020 |archive-date=12 January 2020 |archive-url=https://web.archive.org/web/20200112103650/https://slashdot.org/story/05/03/17/169200/date-s-turning-1111111111 |url-status=live }}{{unreliable source?|date=May 2012}}</ref> These are directly analogous to the [[new year]] celebrations that occur at the change of year in many calendars. As the use of Unix time has spread, so has the practice of celebrating its milestones. Usually it is time values that are round numbers in [[decimal]] that are celebrated, following the Unix convention of viewing <code>time_t</code> values in decimal. Among some groups round [[binary numeral system|binary]] numbers are also celebrated,{{Citation needed|date=September 2019}} such as +2<sup>30</sup>, which occurred at 13:37:04 UTC on Saturday, 10&nbsp;January 2004.

The events that these celebrate are typically described as "''N'' seconds since the Unix epoch", but this is inaccurate; as discussed above, due to the handling of leap seconds in Unix time the number of seconds elapsed since the Unix epoch is slightly greater than the Unix time number for times later than the epoch.

* At 18:36:57 UTC on Wednesday, 17&nbsp;October 1973, the first appearance of the date in [[ISO 8601]] format{{efn|cited retroactively since ISO 8601 was published in 1988.}} {{Nowrap|(1973-10-17)}} within the digits of Unix time (119731017) took place.
* At 01:46:40 UTC on Sunday, 9&nbsp;September 2001, the Unix billennium (Unix time number {{val|1000000000}}) was celebrated.<ref name="unixtime_facts">{{cite web|title=Unix time facts & trivia – Unix Time . Info|url=http://unixtime.info/facts.html|archive-url=https://web.archive.org/web/20171027205157/http://unixtime.info/facts.html|archive-date=27 October 2017}}</ref> The name ''billennium'' is a [[portmanteau]] of ''[[billion (word)|billion]]'' and ''[[millennium]]''.<ref>{{cite web |url=http://www.electromagnetic.net/press-releases/unixonebln.php |archive-url=https://archive.today/20130413172626/http://www.electromagnetic.net/press-releases/unixonebln.php |url-status=dead |archive-date=13 April 2013 |title=UNIX Approaches Ripe Old Age of One Billion |publisher=Electromagnetic.net |access-date=6 December 2012 }}</ref><ref>{{cite journal |url=http://catless.ncl.ac.uk/Risks/21.69.html#subj7 |title= The RISKS Digest, Volume 21 Issue 69|date=15 October 2001 |access-date=6 December 2012 |last1=Neumann |first1=Peter G. |journal=The Risks Digest |volume=21 |issue=69 |archive-date=22 October 2015 |archive-url=https://web.archive.org/web/20151022025543/http://catless.ncl.ac.uk/Risks/21.69.html#subj7 |url-status=live }}</ref> Some programs which stored timestamps using a text representation encountered sorting errors, as in a text sort, times after the turnover starting with a ''1'' digit erroneously sorted before earlier times starting with a ''9'' digit. Affected programs included the popular [[Usenet]] reader [[KNode]] and [[e-mail]] client [[KMail]], part of the [[KDE]] desktop environment. Such bugs were generally cosmetic in nature and quickly fixed once problems became apparent.{{cn|date=April 2023}} The problem also affected many ''Filtrix'' document-format filters provided with [[Linux]] versions of [[WordPerfect]]; a patch was created by the user community to solve this problem, since [[Corel]] no longer sold or supported that version of the program.<ref name="linu_Tech">{{Cite web | title = Technical Problems. | work = linuxmafia.com | access-date = 21 August 2017 | url = http://linuxmafia.com/wpfaq/problems.html#FITRIX | archive-date = 11 October 2012 | archive-url = https://web.archive.org/web/20121011065555/http://linuxmafia.com/wpfaq/problems.html#FITRIX | url-status = live }}</ref>
* {{anchor|1234567890 Day}}At 23:31:30 UTC on Friday, 13&nbsp;February 2009, the [[decimal]] representation of Unix time reached {{val|1234567890}} seconds.<ref>{{cite web|author=nixCraft |url=https://www.cyberciti.biz/tips/february-13th-unix-time-will-reach-1234567890.html |title=Humor: On Feb, Friday 13, 2009 Unix time Will Be 1234567890 |publisher=Cyberciti.biz |access-date=5 July 2023}}</ref> [[Google]] celebrated this with a [[Google Doodle]].<ref>{{cite web|title=Google 1234567890 Logo|url=https://www.google.com/logos/unix1234567890.gif|publisher=Google Inc.|access-date=28 January 2013|archive-date=11 January 2013|archive-url=https://web.archive.org/web/20130111012013/http://www.google.com/logos/unix1234567890.gif|url-status=live}}</ref> Parties and other celebrations were held around the world, among various technical subcultures, to celebrate the {{val|1234567890}}th second.<ref name="party-like-its=1234567890"/><ref>{{cite news |url=https://www.thetimes.co.uk/tto/technology/article1859315.ece |title=At the third stroke, the Unix time will be 1234567890 |newspaper=[[The Times]] |first=Murad |last=Ahmed |date=13 February 2009 |access-date=12 January 2020 |archive-date=14 November 2016 |archive-url=https://web.archive.org/web/20161114122531/http://www.thetimes.co.uk/tto/technology/article1859315.ece |url-status=dead }}</ref>