Since 2019, March 10 has been celebrated as Mario Day, as when written as Mar10, it resembles the name of the iconic plumber. You can read about all things Mario in the Super Mario Wiki.
Mario is a fictional character in the Mario video game franchise owned by Nintendo. He is a short, pudgy, Italian plumber who resides in the Mushroom Kingdom and his adventures generally center upon rescuing Princess Peach from the villain Browser. Mario’s younger brother and sidekick is Luigi.
These posts are true to the best of my knowledge at the time of writing. I make no claims to their accuracy. The purpose is to inform, educate, amuse, and make people aware of causes and opportunities around the world. I also encourage civil debate in the comment section.