May: a month full of unusual surprises. Especially these bizarre holidays! Prepare for these special days with the calendar below.

Many of these seemingly silly holidays are actually historical events.

For instance, Frog Jumping Day celebrates the anniversary of Mark Twain’s first published short story, “Jim Smiley and His Jumping Frog.”

Sally Ride day commemorates the birthday of Sally Ride, the first woman to go into space.

Limerick Day celebrates the birthday of Edward Lear, a famous limerick writer.

You will find more crazy and wacky holidays at http://www.holidayinsights.com/ , which was the source for this calendar.