Mad Hatter Day is observed on October 06, 2021. It was introduced in 1986 by a group of computer people in Boulder, Co and is a day to be silly and celebrate silliness. The Hatter is a fictional character in Lewis Carroll's "Alice's Adventures in Wonderland". He is often referred to as the Mad Hatter.
We have placed a detailed description of this event on this page: Mad Hatter Day 2020. For further information please stop by there!