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:

25 Jan 2024Burns Night
Sep 7, 2023Camels in the desert, United Arab Emirates
6 Nov 2025Celebrating Yi Peng
29 Dec 2023Happy Hogmanay!
11 Oct 2025World Migratory Bird Day
12 Nov 2024Arches National Park, Utah, United States
Patchwork of peace
A magical resting place
6 Apr 2024Japan Castle Day
20 Sep 2024Ocracoke Lighthouse on Ocracoke Island, North Carolina, USA
31 Jan 2026International Zebra Day
An island crossroad of culture
Park of the Monsters
21 Nov 2025World Hello Day
Who uses this grassy bridge?
Southern tip of a northern isle
Tune into International Jazz Day
22 Jan 2024Walton Lighthouse, Santa Cruz, California, USA
27 Jan 2024Saint Paul Winter Carnival
12 Jul 2024Mount Rainier National Park, Washington, USA
21 Nov 2024Lion cubs, South Africa
15 Nov 2025Irohazaka Road in autumn, Nikko, Tochigi, Japan
17 May 2024Endangered Species Day
24 Jul 2025Happy Cousins Day!
A window to the Pacific
10 May 2026Jasper National Park in Alberta, Canada
15 Sep 2025Point Reyes National Seashore, California, United States
Pearl among the emeralds
The road less taken?
27 Mar 2024World Theatre Day