In US date notation, today is 10/6 – meaning it is Mad Hatter’s Day
The card on the Hatter’s hat says 10/6, so we celebrate the event on October 6th in the US. Contrariwise, in countries that first list the day and then the month, we celebrate it at June 10th. And if you live in Looking-Glass Land, you’d probably celebrate it on 10\9 or 9\10! 🙂
Anyway – Happy Mad Hatter’s Day!