Blackout times for Borders

I know I was going to post the answer tonight but I wanted to see if anyone else could correctly answer the Borders Trivia question I posted a couple of days ago.

"Since I have been working for Borders, there have been only two blackout times, that is days employees cannot ask off. Can you give the reason for both times period?

1. November 25 through January 10

2. July 20-22

I changed the posting of the answer to Saturday night.

You can leave your answers as a post/comment on this blog.