Washington, D.C.
In 2009, the U.S. House of Representatives passed H.Res.224, supporting the designation of Pi (the ratio of a circle’s circumference to its diameter) Day. The resolution read in part, “Whereas Pi can be approximated as 3.14, and thus March 14 . . . is an appropriate day for National Pi Day, now, therefore, be it resolved, that the House of Representatives supports the designation of a ’Pi Day’ and its celebration around the world; recognizes the continuing importance of National Science Foundation’s math and science education programs; and encourages schools and educators to observe the day with appropriate activities that teach students about Pi and engage them about the study of mathematics.”