Pi Day 1918

Thursday, 14 March 1918

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 1918?
Pi Day 1918 is on Thursday, 14 March 1918.
What day of the week is Pi Day 1918?
It falls on Thursday.
How is Pi Day calculated?
This event is observed every year on 14 March.