Friday, 14 March 1980
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 1980?
- Pi Day 1980 is on Friday, 14 March 1980.
- What day of the week is Pi Day 1980?
- It falls on Friday.
- How is Pi Day calculated?
- This event is observed every year on 14 March.