KALIHI, Hawaii - The famous mathematical ratio 3.14 is celebrated every March 14 on National Pi Day! Many bakeries or pizza shops across the state are observing the unofficial occasion with discounts and specials.

Hawaiian Pie Company in Kalihi says it sees a major boost in sales on this day. It normally makes about 150 to 200 pies a day, but on Pi Day, it expects to sell about 700.