Pi Day 1965

Sunday, 14 March 1965

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 1965?
Pi Day 1965 is on Sunday, 14 March 1965.
What day of the week is Pi Day 1965?
It falls on Sunday.
How is Pi Day calculated?
This event is observed every year on 14 March.