Pi Day 2024 Canada Dates. Pi day is celebrated on march 14 every year. Dates of all holidays and celebrations in the calendar for 2024.
Pi (greek letter “ π ”) is the symbol used in mathematics to represent a constant — the ratio of the circumference of a circle to its diameter — which is approximately 3.14159. A freshly decorated key lime pie rests on a counter in a busy bakery kitchen at michele’s pies, wednesday, march 13, 2024, in norwalk, conn.