The publication date is when that Web page was actually created.

In fields like health, science and politics, where currency is important, look for an update date:

• This page was last modified on [date]
• Date reviewed [date]
• Content last updated [date]

Test currency by checking the dates of sources referenced by the author.

Tip: When no publication date is given, only MLA permits you to cite the copyright date (the latest date next to the copyright sign at the bottom of a page).