Happy Pi Day A Pi Day pie from Reilly’s Bakery in Biddeford at Biddeford High School in Biddeford, ME on Friday, March 13, 2015. (Photo by Whitney Hayward/Portland Press Herald via Getty Images) Share this:Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Click to share on Facebook (Opens in new window)Like this:Like Loading...