View source for Template:Citation Style documentation/date

* <span id="csdoc_date" style="background-color: #f8f9fa; border: 1px solid #c8ccd1; color: #000; font-family: Menlo, Consolas, Monaco, 'Noto Mono', 'Nimbus Mono L', monospace; font-size: 1em; font-weight: 700; padding: 1px 4px;">date</span>: The date of the referenced source, displayed after the authors enclosed in parentheses; can be a full date (month, day and year) or partial (month and year, season and year, or year). Use same format as other publication dates in the citations<ref group="date" name="date" /> and do not wikilink. If there is no author, then displays after the website and publisher. For acceptable date formats, see [[wikipedia:Help:Citation Style 1#Dates|Help:Citation Style 1 § Dates]]. {{#if:{{{aliases|}}}|Aliases: {{{aliases}}}.}}
:[[wikipedia:Help:Shortened footnotes|Shortened footnotes]] target full citations using the year specified in this parameter. A lowercase letter may be suffixed to the year to disambiguate {{Tlx|Sfn}} links to multiple works by the same author in the same year{{Sup|[[Template:Sfn#More than one work in a year|[more]]]}}, unless the date is formatted as <code>YYYY-MM-DD</code>. In the latter case, '''<code>year</code>''' or '''<code>ref</code>''' is required to disambiguate the link targets.
{{Anchor|Undated}}
:For no date, or "undated", use {{Para|date|n.d.}}, and for approximate years precede with "<code>c. </code>", as in {{Para|date|c. 1900}}.
:The date of a web page, PDF, etc. with no visible date can sometimes be established by searching the page source or document code for a <code>created</code> or <code>updated</code> date; a comment for editors such as <code><nowiki>|date=2021-12-25<!-- Date from page source. -->|orig-date=Original date 2011-01-01</nowiki></code> can be added.
* <span id="csdoc_year" style="background-color: #f8f9fa; border: 1px solid #c8ccd1; color: #000; font-family: Menlo, Consolas, Monaco, 'Noto Mono', 'Nimbus Mono L', monospace; font-size: 1em; font-weight: 700; padding: 1px 4px;">year</span>: The year of publication, however the more flexible '''<code>date</code>''' parameter detailed above also handles a year by itself. Do not use in combination with the {{Para|date}} parameter, unless '''''both''''' of the following conditions are met:
*# [[wikipedia:Help:Shortened footnotes|Shortened footnotes]] target multiple citations with same last name and year of publication. This situation warrants a [[wikipedia:Wikipedia:Citation templates and reference anchors|citation reference anchor]] [[Template:Sfn#More than one work in a year|disambiguator]], usually a lowercase letter suffixed to the year.)
*# The {{Para|date}} value is formatted as <code>YYYY-MM-DD</code>, which prevents the addition of a disambiguating letter to the year.{{#if:{{{limited_param_list|}}}||
* {{Anchor|csdoc_origyear}}<span id="csdoc_origdate" style="background-color: #f8f9fa; border: 1px solid #c8ccd1; color: #000; font-family: Menlo, Consolas, Monaco, 'Noto Mono', 'Nimbus Mono L', monospace; font-size: 1em; font-weight: 700; padding: 1px 4px;">orig-date</span>: The original publication date or year, displayed in square brackets after the '''<code>date</code>''' or '''<code>year</code>'''; for clarity, please supply specifics. For example: {{Para|orig-date|First published 1859}} or {{Para|orig-date|Composed 1904}}. As {{Para|orig-date}} does not support automatic date formatting, use the same date format as defined by '''<code>df</code>''' (or, if it exists, by {{Para|cs1-dates}}) or as used in the {{Para|date}} parameter. Alias: '''<code>orig-year</code>'''.}}
* <span id="csdoc_df" style="background-color: #f8f9fa; border: 1px solid #c8ccd1; color: #000; font-family: Menlo, Consolas, Monaco, 'Noto Mono', 'Nimbus Mono L', monospace; font-size: 1em; font-weight: 700; padding: 1px 4px;">df</span>: The date format for rendered dates; does not support date ranges or seasonal dates and overrides the automatic date formatting described above. Accepts one keyword value which may be one of:
** <code>mdy</code> – Set publication dates to month day, year format; <code>access-</code> and <code>archive-</code>dates are not modified
** <code>dmy</code> – As above for day month year format
** <code>ymd</code> – As above for year-first numeric format YYYY-MM-DD
** <code>mdy-all</code> – Set publication, <code>access-</code> and <code>archive-</code>dates to month day, year format
** <code>dmy-all</code> – As above for day month year format
** <code>ymd-all</code> – As above for year-first numeric format YYYY-MM-DD

{{Reflist|group=date|refs=<ref name=date>Publication dates in references within an article should all have the same format. This may be a different format from that used for archive and access dates.</ref>}}