Astronomy Day is an observance to appreciate and study the cosmos. Read more
Participating comic book stores give out free comic on Free Comic Book Day which is celebrated annually on the first Saturday of May. Read more
2 5月No Pants Day encourages people to go out in public without their pants on.
2 5月Space Day is an unofficial holiday devoted to all things outer space.
4 5月Fans of Star Wars have created Star Wars Day to celebrate the hugely popular sci-fi film series set in a galaxy far, far away.
5 5月Celebrate this unique mathematical holiday that takes place on dates where the month and day digits are square roots of the year.