Fun and quirky Education
Pi Day
A celebration of the mathematical constant pi, held on 14 March because the date written 3/14 matches its first digits.
- UK
- USA
- International
OrganiserExploratorium
ListingAdded by us from official sources
Last checked19 October 2026
First held1988
About the day
The Exploratorium science museum in San Francisco started Pi Day in 1988 and still holds an annual celebration. Schools and maths groups mark it with puzzles, games and pie.
Dates for the next three years
| Year | Date | Where | Status |
|---|---|---|---|
| 2027 | Sunday 14 March 2027 | UK, USA, International | Same date every year |
| 2028 | Tuesday 14 March 2028 | UK, USA, International | Same date every year |
| 2029 | Wednesday 14 March 2029 | UK, USA, International | Same date every year |
Where this information comes from
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