I'm glad you asked! The British form of writing dates is day/month/year (which always made sense to me since it's smallest unit to biggest). So today is 10/6/11. The Mad Hatter is known to wear the price tag on his hat: 10/6. So in the UK, the unofficially and obscure day is today. In the US it rolls around on 10/6 as well, which is October 6 to us.
I wanted to release my newest novel today in honor of Mad Hatter Day, but due to last minute changes (read: improvements), it isn't ready. Look for it later this week! Here's the working draft of the cover:
Cover design by Jodie Coleman.