This template is used to flag statements that are likely to become outdated by a specific future date. It is important to distinguish its use on other date-sensitive statements on Wikipedia, where date-sensitive information may require revision without a specific future date in mind. It remains invisible to readers until that date, when it appears and adds the page to Category:Wikipedia articles in need of updating.
See the Wikipedia Manual of Style on chronological items, the editing guidelines on precise language and updating information, and Wikipedia:As of.
{{Update after|year|month|day|category|reason=...|text=...}} (all parameters are optional)
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|1=, |2=, and |3= are respectively the year, month, and day that the template should activate. If only the year is specified, the template will activate on 1 January of the year following the specified year. If only the year and month is specified, the template will activate on the first day following the specified month. If all three parameters are blank, the template will activate immediately. At least the month and year should be specified. If parameters 1, 2, and 3 are left blank or not listed, a bot will add the date the template was added to the article later.|4=.|4=United States articles in need of updating places the article in Category:United States articles in need of updating as well as Category:Wikipedia articles in need of updating.|reason= is used to leave a note for future editors about what exactly needs to be changed or where to find the new information. The note is displayed as a tooltip on the "Dated info" link once the template activates.|text= is the text that will become dated, and is as such used to highlight dated text. Until the template activates, the text is displayed ordinarily, as if it were not wrapped.|delay= specifies an additional number of days to delay activation of the template after the specified date.Please read Wikipedia:Avoid statements that will date quickly, Manual of Style on chronological items, the editing guidelines on precise language and updating information, and Wikipedia:As of; use {{Update after}} only in exceptional cases. Do not use this template on pages which simply need to be reviewed later to see if they might need updating; it should only be used when there is a certainty or very high probability that an update is needed, or with statements that will be out-of-date at a specifiable future date. Do not use this template on talk pages; it is intended for inline usage, like {{Citation needed}}. It is probably not necessary to use this template on frequently edited articles such as for current events, as they will be being updated on a regular basis. Do not use this template within a section heading as it will count as part of the heading and thus break the heading.
TemplateData for Update after
Places an in-line note in an article that marks information as [dated] and in need of an update after a given time
When the template is activated in an article, the phrase "needs update" appears in the text of the article at the indicated spot. The page will also appear in Category:Wikipedia articles in need of updating or one of its dated subcategories, when the date is specified, and also any category specified in the 4th parameter.
See Category:Wikipedia articles in need of updating for a list of pages currently needing updates, and Wikipedia:As of for a list of 'As of' pages.