Did you know there's a World Play-Doh Day?

There are days honoring kid inventors, pi, doughnuts and even UFOs. Why not Play-Doh? 

If you don’t already have it on your calendar, World Play-Doh Day is Sept. 16.

According to Hasbro Inc., the maker of the ubiquitous childhood favorite, the celebration started in 2006 as National Play-Doh Day but was elevated to a global scale in 2015. Fans are encouraged to make their own masterpieces and share them on social media. (Keep tabs on the fun at facebook.com/playdoh.)

To celebrate, here are some fun Play-Doh facts from Hasbro:

Since it hit store shelves in 1956, more than 3 billion cans have been sold—enough to reach the moon and back three times.  The compound originally was intended for use as wallpaper cleaner. The three primary ingredients are water, salt and flour.  Play-Doh initially came only in red, blue, yellow and white. Today, more than 50 hues are offered. Play-Doh was inducted into the National Toy Hall of Fame in 1998. A standard-size can holds 172 pennies.