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{{more citations needed|date=January 2019}}
'''Date and time notation''' around the world varies. Countries have adopted differing standards, software maker use different standards, people in daily life use different standards.
{{Use American English|date=December 2024}}


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'''Date and time notation''' around the world varies.
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An approach to harmonise the different notations is the [[ISO 8601]]. (See also [[ISO 8601 usage]])


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An approach to harmonize the different notations is the [[ISO 8601]] standard.
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Since the [[internet]] is a main enabler of communication between people with different date notation background, and software is used to facilitate the communication, [[RFC]] standards and [[W3C]] tips and discussion paper were published.


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Since the [[Internet]] is a main enabler of communication between people with different date notation backgrounds, and software is used to facilitate the communication, [[Request for Comments|RFC]] standards and a [[W3C]] tips and discussion paper were published.
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*RFC 822 "Standard for the Format of Arpa Internet Text Messages"
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**published 1982-08-13
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**e.g. used for email
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**format: [day ,] 20 Jun 82 14:01:17
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*RFC 2445 "Internet Calendaring and Scheduling Core Object Specification"
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**format: 19960401T235959Z
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*RFC 3339 "Date and Time on the Internet: Timestamps"
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**published July 2002
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**intended use: new internet protocols
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**format: 1982-06-20
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*W3C [http://www.w3.org/QA/Tips/iso-date Tip "Use international date format (ISO)"] - a tip that is not followed by the W3C itself. The W3C uses lots of different formats on their websites.


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* {{IETF RFC|822|link=no}} "Standard for the Format of Arpa Internet Text Messages"
==Websoftware==
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** published 1982-08-13
As of 2007 a lot of widespread software that is used to create webpages uses different date formats and only a few are configurable. Configurability would allow webmasters to run websites with only one kind of time notation.
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** e.g. used for email
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** format: [day ,] 20 Jun 82 14:01:17
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* {{IETF RFC|2445|link=no}} "Internet Calendaring and Scheduling Core Object Specification"
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** format: 19960401T235959Z
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* {{IETF RFC|3339|link=no}} "Date and Time on the Internet: Timestamps"
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** published July 2002
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** intended use: new internet protocols
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** format: 1982-06-20
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* W3C: [http://www.w3.org/QA/Tips/iso-date "Use international date format (ISO)"]


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== See also ==
{| class="wikitable sortable"
* {{slink|Calendar date|Date format}}
|-
* [[Date and time representation by country]]
! name !! default format !! configurable !! ISO 8601 possible !! producer site
* [[Date code]]
|-
* [[Holocene calendar]]
| [[Bugzilla]] || *2007-04-08 15:52 PDT || ? || ? || 2007 Apr 10
* [[ISO 8601 usage]]
|-
* [[Time formatting and storage bugs]]
| [[CVS]] || *2007/04/08 15:52:01 || ? || no ||
* [[Unix time]]
|-
| [[GNU Mailman]] / pipermail || *2007-April || no || no || *10 Apr *10-Apr-2007 *Apr 10, 2007
|-
| [[Mediawiki]] || *15:52, 8 April 2007 *15:52, 8 April 2007 (UTC) [signature] || yes || partially || *2007-04-08 *15:52, 8 April 2007 *2007/04/10 [http://www.mediawiki.org/enwiki/w/index.php?title=Extension:Add_Article_to_Category&oldid=78997]
|-
| [[phpBB]] || ? || *Sun Apr 08, 2007 3:52 pm || ? || *Apr 10, 2007 *2007-04-10 *Sun Apr 08, 2007 3:52 pm
|-
| [[plone]] || locale-dependent || no || no || locale-dependent
|-
| [[trac]] || various || ? || ?
|-
| [[Typo3]] || ? || ? || ? || *Sun, 08 Apr 2007 15:52:00 *8 April 2007
|-
| [[wordpress]] ||
|}


[[Category:Date and time representation]]
==Top 10 Websites==
The top 10 websites of the world, as measured by Alexa also use different date formats [http://alexa.com/site/ds/top_sites?ts_mode=global], sometimes within their own site:
#yahoo.com Apr 8, 2007; 3:52 p.m.; Sun Apr 8, 3:52 PM ET
#msn.com Sunday, April 08, 2007
#google.com 8 Apr 2007; Apr 8, 2007
#youtube.com April 08, 2007
#myspace.com Sun 04/08
#live.com 4/8/2007; 4/8/2007 3:52 PM
#baidu.com 2007-4-8
#orkut.com 8-April 2007
#qq.com 8月4日腾讯公布2007年第四季度及全年业绩 April 8, 2007
#yahoo.co.jp ?


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==See also==
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*[[Date and time notation by country]]


{{time-stub}}
[[Category:Timekeeping]]

Latest revision as of 16:24, 15 December 2024

Date and time notation around the world varies.

An approach to harmonize the different notations is the ISO 8601 standard.

Since the Internet is a main enabler of communication between people with different date notation backgrounds, and software is used to facilitate the communication, RFC standards and a W3C tips and discussion paper were published.

  • RFC 822 "Standard for the Format of Arpa Internet Text Messages"
    • published 1982-08-13
    • e.g. used for email
    • format: [day ,] 20 Jun 82 14:01:17
  • RFC 2445 "Internet Calendaring and Scheduling Core Object Specification"
    • format: 19960401T235959Z
  • RFC 3339 "Date and Time on the Internet: Timestamps"
    • published July 2002
    • intended use: new internet protocols
    • format: 1982-06-20
  • W3C: "Use international date format (ISO)"

See also

[edit]


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