Date and time notation: Difference between revisions

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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}}

*[['''Date and time notation''' byaround country]]the world varies.

An approach to harmonise the different notations is the [[ISO 8601]]. (See also [[ISO 8601 usage]])

An approach to harmoniseharmonize the different notations is the [[ISO 8601]] standard. (See also [[ISO 8601 usage]])

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.

Since the [[internetInternet]] is a main enabler of communication between people with different date notation backgroundbackgrounds, and software is used to facilitate the communication, [[Request for Comments|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 [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.

*RFC {{IETF RFC|822|link=no}} "Standard for the Format of Arpa Internet Text Messages"

==Software==

** 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 is configurable. Configurability would allow webmasters to run websites with only one kind of time notation.

** e.g. used for email

** format: [day ,] 20 Jun 82 14:01:17

*RFC {{IETF RFC|2445|link=no}} "Internet Calendaring and Scheduling Core Object Specification"

** format: 19960401T235959Z

*RFC {{IETF RFC|3339|link=no}} "Date and Time on the Internet: Timestamps"

** published July 2002

** intended use: new internet protocols

** format: 1982-06-20

* 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.

== 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]]

| [[Mediawiki]] || various || yes || partially || various

* [[ISO 8601 usage]]

|-

* [[Time formatting and storage bugs]]

| [[pipermail]] || 2007-April || no || no ||

* [[Unix time]]

|-

| [[trac]] || various || ? || ?

|-

| [[wordpress]] ||

|-

| [[plone]] || ? || ? || ? || Apr 10, 2007

|-

| [[mailman]] || ? || ? || ? || 10 Apr ; 10-Apr-2007 ; Apr 10, 2007

|}

[[Category:Date and time representation]]

==See also==

*[[Date and time notation by country]]

[[Category:Timekeeping]]

{{time-stub}}