Pi Day 2021 is on Sunday, 14 March 2021.

How is Pi Day calculated?

This event is observed every year on 14 March.

When is Pi Day 2021?

Name: Pi Day
Start: 2021-03-14
End: 2021-03-14
Location: Worldwide

Sunday, 14 March 2021

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 2021?: Pi Day 2021 is on Sunday, 14 March 2021.
What day of the week is Pi Day 2021?: It falls on Sunday.
How is Pi Day calculated?: This event is observed every year on 14 March.