Board Thread:Support Requests - Designing Your Wikia/@comment-4224349-20141030195954/@comment-5939974-20141214083833

This one's tough. For the countdown, type this into your wiki's Common.js page:

Then on the page you want the text to countdown, use the format MM DD YYYY HH:MM:SS

...replacing the month parameter in full (eg. January).

For the floating parameter, I can't configure it to appear site-wide, just for an article. Use the Wikia notification balloon.

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You can take a look at a live version here (might change contents). Could this be what you need?