Pretzel Day is a made-up holiday devoted to everyone’s favorite snack with beer – pretzels. Read more
Richter Scale Day is an unofficial holiday dedicated to the work of seismologist Charles Francis Richter. Read more
24 4月Take Our Daughters and Sons to Work Day is a holiday that encourages parents to take their children to work.
25 4月DNA Day on April 25 celebrates and recognizes the importance of genetics and the scientific advances made in the field of genetics.
27 4月World Pinhole Photography Day on the last Sunday of April celebrates the art and science of pinhole cameras and photography.
29 4月Zipper Day on April 29 is dedicated to the humble zipper, a device we all usually take for granted.