Pi Day is an annual national celebration of the mathematical concept, which is the ratio of a circle's circumference to its diameter and equals 3.14... March 14 is also reportedly the birthday of ...

On March 14, math classes across the country will celebrate Pi Day—a national holiday in honor of the mathematical constant pi, which represents the ratio of a circle’s circumference to its diameter ...

On Friday, restaurants and businesses nationwide will be celebrating one of the "nerdiest" days of the year with deals on actual pie, pizza pie and other delights. All Milk Bar locations will offer a ...

All Milk Bar locations will offer a “Pi à la Mode” deal: a slice of Milk Bar’s famed Milk Bar Pie alongside a cup of their signature Cereal Milk Soft Serve for $10 ($4 discount). What goes better with ...