Thread:Alica123/@comment-4946552-20120207051235/@comment-4257094-20120207221801

Yup, just steal the code off MediaWiki:Common.js and then when you want to use the code, just type in the following: July 06 2012 00:00:00 EST until my birthday FAILURE

You can change the dates, times, time zones, the "until my birthday" and the Failure notice.