4. International Tom Hanks DayIf you love Tom Hanks (and who doesn't?! ), you'll definitely want to celebrate International Tom Hanks Day on the Saturday that falls closest to April 1. Galactic Tick DayAs far as holidays go, Galactic Tick Day is a relatively new addition ... even though the reason for it is as old as the universe. All of that means the next galactic tick day is December 15, 2021. Bean Throwing DayThis holiday, more properly known as Setsubun, is observed on February 3 in Japan.