I'm going based off of the Steam page which says it's released in 1 Day and 4 Hours from now (It's 5:10 right now for me). Maybe it's 1 Day, 4 Hours and 50 Minutes which would mean 10:00 Pacific Time but it's got to be either 9 or 10 Pacific Time based off of the Steam page.
It was for a competition between testers that had been playing the game for months. http://www.bethblog.com/index.php/2011/10/13/jeff-vs-sam-ii-the-skyrim-speedrun/