Wikipedia contains date-sensitive information which may require revision on a known future date. Such date-sensitive statements are marked with an indicator that appears on a specified date displaying ^{[needs update]} and linking to this page. For example, 2008 United States presidential election needed to be updated on November 4, 2008 (election), December 15, 2008 (electoral college), January 6, 2009 (tallying), and January 20, 2009 (inauguration), although that specific article was unlikely to need such reminders.

This page documents an English Wikipedia editing guideline. It is a generally accepted standard that editors should attempt to follow, though occasional exceptions may apply. Any substantive edit to this page should reflect consensus. When in doubt, discuss first on the talk page.

If ^{[needs update]} appears on a page, please edit the page to update the information and, as appropriate, delete the template or reset it to the next date the information needs to be updated. Please see Template:Update after, which has details on exactly when it may or may not be used, and what the required and optional parameters are. Other articles in need of updating can be found using the links listed below.

• Category:Wikipedia articles in need of updating includes these articles when they need updating, as well as articles linked with Template:Update.
• Wikipedia:As of includes these articles, as well as articles linked with As of.
• Wikipedia:WikiProject Update Watch