Celebrating Pi Day 14 Mar 2026

Celebrating Pi Day

Long before pi had a name, people were drawn to its mystery. Every year on March 14, Pi Day highlights one of math"s most recognisable constants. The date reflects the first three digits of pi (π), the ratio of a circle"s circumference to its diameter: 3.14. Pi"s infinite, nonrepeating decimal has fascinated thinkers for a long time. The modern celebration began in 1988, when physicist Larry Shaw marked the day with a fitting tribute: serving pie.

© Helen Hotson/Alamy

palette

Today in History

A beautiful labyrinth
14 Mar 2024Happy Pi Day!
14 Mar 2025Celebrating Pi Day

More Desktop Wallpapers:

7 Jun 2024World Oceans Day
22 Dec 2023December solstice
15 Jan 2024Pont Alexandre III, Paris, France
The Riviera of India
2 May 2025Striated heron on a Victoria water lily, Pantanal, Brazil
14 Oct 2025Village of Oia in Santorini, Greece
21 Oct 2023International Archaeology Day
15 Dec 2024Lake Misurina, Dolomites, Italy
8 Nov 2025Bandon Beach in Bandon, Oregon, United States
Dare to delve into this dense swamp
19 Jan 2026Abraham Lake, Alberta, Canada
28 Jun 2024Stonewall uprising anniversary
The glowing winter
Postcard from Italy
3 Jun 2026World Bicycle Day
When art imitates life
10 Oct 2024Ancient town of Sorano, Tuscany, Italy
4 Jan 2024Golden Gate Bridge, San Francisco, California, USA
4 Apr 2026Discover National Parks Fortnight
Rolling hills and charming villages
29 Jun 2024Pride in London
Check out these ‘sea cows’
2 Dec 2023Angkor, Cambodia
24 Sep 2024Skaftafell, Vatnajökull National Park, Iceland
Owl be seeing you
3 Aug 2026Colourful boats in Marsaxlokk Harbour, Malta
4 Jul 2024Italica, an old Roman city in Santiponce, Andalusia, Spain
16 May 2026Smith Rock State Park, Oregon, United States
10 Jan 2024Mylopotamos, Thessaly, Greece
27 Dec 2023Kirkjufell, Iceland