Momentum Academy: Fox Park celebrates Pi Day Happy Pi Day! Scholars at Fox Park had the opportunity to engage in many activities related to Pi, which is 3.14: the ratio of the circumference of a circle to its diameter. In St. Louis, on March 14, we get an additional reason to celebrate— it’s 314 Day. Therefore, we get to indulge in the things that make St. Louis so unique such as some of our favorite snacks: Vess soda, Red Hot Ripplets, pickles with a peppermint, and more. Go Cards!