Pi Day 1929

Thursday, 14 March 1929

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 1929?
Pi Day 1929 is on Thursday, 14 March 1929.
What day of the week is Pi Day 1929?
It falls on Thursday.
How is Pi Day calculated?
This event is observed every year on 14 March.