You can change the times of the broadcasts that are displayed in the countdown timer through the Sunday Streams Manager.  

In the Sunday Streams Manager you would click on:
  • Go Player (in the menu on the left)
  • Settings (tab at the top of the page)
  • Schedule (at the top of the page)
  • Click Update (at the bottom of the page) after you are done changing the broadcast times.  

The direct link to the page that you can change them at is