"The Day After pattern stipulates that whichever direction the market closes on Fed Day, it will close in the opposite direction on the following day.
The post I made to GLENO at 2:31 was what I saw immediately following the announcement. What can be seen on a 1 minute chart shows a down spike, followed by the up spike. For the pattern to continue, there needs to be a down spike to finish the pattern on Fed Day, which then it can "close in the opposite direction on the following day".