Read the full study: http://edgerankchecker.com/blog/2013/12/how-did-people-use-facebook-on-thanksgiving-black-friday/
When do people use Facebook on Thanksgiving and Black Friday? Facebook recently opened up access to a new metric that enables us to see exactly when your fans are online. We've examined when people are on Facebook in the past and found that users are mostly on during traditional waking hours. The more local a fan base, the more drastic this timing impacts your brand. We wanted to a take a look at Thanksgiving and Black Friday to see if there were any changes in the data.