This may sound cynical. I really dislike fake science holidays like Pi day and Mole day. My impression is that they are "celebrated" ironically by most people. It's the time of year that everyone can agree that there's something valuable about science and math but only so far as it can fit on an ironic shirt.
"Um, turns out..." almost no one is interested in what a Mole actually is once I tell them it's not an animal.