Board Thread:Support Requests - Designing Your Wikia/@comment-14443911-20160209192335/@comment-24473195-20160213195758

It depends on how each week is defined, for example, if one wants it to change on the 7, 14, 21, and 28 it could be as simple as writing:

The problem is that mediawiki is designed for performance. That means that the cache won't change when one wants it to. So it may show a new trivia later than one would expect, or simply skip the check because the cache wasn't reset in a particular day. The only true way to prevent this behavior is using JavaScript or by using something like the shown above to force it to check every time. Although if I recall correctly cache still affects the "choice thing".

Side Note: Extensions like choice should really be killed in Wikia, because 1) they affect performance, 2) Wikitext is not a programming language nor will it likely ever be.