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Template:Use mdy dates

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Usage

To promote consistent date formatting, place this template with other maintenance tags near the top of articles that use the mmmm d, yyyy date format (below hatnotes, but above infoboxes, as per the Manual of Style). Use the parameter |date= for the month and year that an editor or bot last checked the article for inconsistent date formatting and fixed any found.

Wikipedia articles that use mmmm d, yyyy ("American") dates, either because of the first main contributor rule or close national ties (see Wikipedia:Manual of Style/Dates and numbers, shortcut: WP:MOSNUM), are systematically tagged with {{Use mdy dates}} over time. The template is invisible except in edit mode.

The template lets editors know which date format to use when adding or editing dates in an article. It also facilitates article maintenance by enabling bots to recognize use of this format, and by adding the article to the hidden category called Use mdy dates.

Use of this template is part of a continuing effort to monitor the date formats used in articles, to assist in maintaining consistent formatting within an article. It is not a temporary "cleanup" template. Therefore, do not remove the template without valid reason, such as a determination the article uses or should use a different date format.

After being tagged, and bearing in mind article evolution, periodic script or bot runs clean up formats, correcting any new introductions since its last visit, and updating the visit date on the {{Use mdy dates}} template.

The dmy and mdy templates have almost always been used to indicate date styles in the body of the articles; although it may also indicate the flavour of dates in reference sections or parts thereof. Therefore, this template notice ought to be read in conjunction with the blurb at Wikipedia:Date formattings. MOSNUM script documentation may also be relevant to those interested.

When a citation style does not expect differing date formats, it is permissible to normalize publication dates to the article body text date format, and/or access/archive dates to either, with date consistency being preferred (see MOS:DATEUNIFY).

Auto-formatting citation template dates

Citation Style 1 and 2 (collectively cs1|2) templates automatically render dates (|date=, |access-date=, |archive-date=, etc) in the style specified by this template. Because it is allowed by WP:MOSDATES, the cs1|2 templates can automatically format dates in a variety of styles. Editors may choose how cs1|2 templates render dates by the use of |cs1-dates=<keyword>.

acceptable |cs1-dates= keywords
keyword definition
l long-form publication and access- / archive-dates;
this is the default case when |cs1-dates= is omitted or empty
ll
ls long-form publication dates; abbreviated access- / archive-dates
ly long-form publication dates; year-initial numeric access- / archive-dates (ymd)
s abbreviated publication and access- / archive-dates
ss
sy abbreviated publication dates; year-initial numeric access- / archive-dates (ymd)
y year-initial numeric publication, access- and archive-dates (ymd);
use of these keywords may conflict with MOS:DATEUNIFY;
cs1|2 cannot reformat Month YYYY, Season YYYY, date-ranges of any form, or Julian calendar dates into ymd format
yy

An example is given at Help:Citation Style 1 § Auto-formatting citation template dates.

Nota bene: cs1|2 auto-date formatting does not apply when previewing an article section that does not contain a {{use xxx dates}} template. When editing with the visual editor, changes to this template do not take effect until the page is saved.

Syntax

{{Use mdy dates|date=September 2019}}

TemplateData

This is the TemplateData documentation for this template used by VisualEditor and other tools; see the monthly error report for this template.

TemplateData for Use mdy dates

This template should be placed near the top of articles that use the mmmm d, yyyy date format.

Template parameters

This template has custom formatting.

Parameter Description Type Status
Date date

The month and year that the article was last checked for inconsistent date formatting. Example: 'June 2013'; may use '{{subst:DATE}}' template instead

Auto value
{{subst:CURRENTMONTHNAME}} {{subst:CURRENTYEAR}}
String suggested

Wrongly tagged?

If you determine that an article is incorrectly tagged with this template, you should replace this template with the correct one or at least remove it. This will prevent scripts and bots from applying the "wrong" format.

See also

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