Template:Datepage/doc

This template is used to designate articles that contain factoids for the On this day template. It handles the generation of several pieces of information.
 * It displays a message in a box with a graphic, explaining that editors should not remove or change the format of the section labeled "On This Day".
 * The template takes an unnamed argument that should be the zero-padded day of the year (from 001 to 366) which it uses to generate a category with the appropriate sort key. The category is Category:Calendar dates. You can override this feature by specifying a named category argument.
 * It automatically generates a standard lead sentence for the article, except for the six standard holidays.

Usage
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