We have a MediaWiki wiki in which we make extensive use of templates. These templates often include a future date. For example, when a page should be deleted, we use a deletion template with a date one week in the future. (This then produces a message on the page showing that the page will be subject to deletion at that date.)
Is there an easy way of dynamically creating a list of pages based on that date? Basically we want to list all the pages that may be deleted, for easy administration.
Note the accepted answer below requires you to read the comments to see all possible solutions (not yet worked out in detail).