October 28th, 1892. In that day, the first public presentation of the Theathre Optique was made by Charles-Emile Reynaud. A moment that marked the birth of the magnificent art of Animation. That was before the first film projections by The Lumiere brothers, it is nice to notice.
This day was chosen for obvious reasons to celebrate the International Animation Day. Since 2002, ASIFA promotes a global celebration event on this day. Folks who live in Brasil can participate in one of the various cities involved. :D