Template:On this day/doc

This is a documentation subpage for Template:On this day.
It may contain usage information, categories and other content that is not part of the original template page.

This template is used on approximately 11,000 pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage. Consider discussing changes on the talk page before implementing them.

This template uses Lua:

Module:On this day

Usage

Place {{On this day|date1=2009-02-22|oldid1=272605053}} on an article's talk page to produce the following message:

A fact from this article was featured on Wikipedia's Main Page in the On this day section on February 22, 2009.

If the page has been featured on multiple dates, use additional date# and oldid# parameters:

A fact from this article was featured on Wikipedia's Main Page in the On this day section on February 22, 2005, February 22, 2006, February 22, 2007, February 22, 2008, and February 22, 2009.

If 10 or more dates are given, the specific dates are hidden:

A fact from this article was featured on Wikipedia's Main Page in the On this day section on 10 dates. [show]

February 22, 2005, February 22, 2006, February 22, 2007, February 22, 2008, February 22, 2009, February 22, 2010, February 22, 2011, February 22, 2012, February 22, 2013, and February 22, 2014

Dates should be entered in YYYY-MM-DD format; they are reformatted appropriately for display.

The template is automatically added or updated by AnomieBOT at the end of each day - there is no need to add it manually.

TemplateData

This is the TemplateData for this template used by TemplateWizard, VisualEditor and other tools. See a monthly parameter usage report for Template:On this day in articles based on its TemplateData.

TemplateData for On this day

Use this template on an article's talk page to indicate that the article was shown on the "On this day..." section of English Wikipedia's Main Page

Template parameters
Parameter		Description	Type	Status
Small?	`small`	If set to anything but an empty string, the box displayed becomes smaller and floats to the right. Example 1	Unknown	optional
Is a demo?	`demo`	Set this parameter value to anything other than blank text to avoid adding the page to Category:Selected anniversaries articles (for example, if the template is being used on a documentation or help page). Example 1	Unknown	optional
Date 1	`date1`	The first date on which the article was featured on the Main Page. Use year-month-day notation. Example 2005-02-22	Date	required
oldid1	`oldid1`	The ID number of the revision shown when the article was first promoted to the Main Page.	Number	required
Date 2	`date2`	The second date on which the article was featured on the Main Page, if applicable. Example 2006-02-22	Date	optional
oldid2	`oldid2`	The ID number of the revision when the article was promoted for the second time, if applicable.	Number	optional
Date 3	`date3`	The third date on which the article was featured on the Main Page, if applicable. Example 2007-02-22	Date	optional
oldid3	`oldid3`	The ID number of the revision when the article was promoted for the third time, if applicable.	Number	optional