Friday, 14 March 1947
Pi Day is celebrated on 14 March in honour of the mathematical constant pi (3.14), with educational activities, mathematics events, and playful traditions such as eating pie.
Frequently asked questions
- When is Pi Day 1947?
- Pi Day 1947 is on Friday, 14 March 1947.
- What day of the week is Pi Day 1947?
- It falls on Friday.
- How is Pi Day calculated?
- This event is observed every year on 14 March.