Celebrating Pi Day Mar. 14, 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
Mar. 14, 2024Happy Pi Day!
Mar. 14, 2025Celebrating Pi Day

More Desktop Wallpapers:

Nov. 14, 2023Russell lupines, Lake Tekapo, New Zealand
Feb. 12, 2025Celebrating Charles Darwin
The envy of postcards and snow globes
Jan. 15, 2024Northern Lights
Willamette National Forest, Oregon
Jul. 31, 2024Hoodoos, Sunset Point, Bryce Canyon National Park, Utah, USA
Jan. 4, 2026Kings Mountain, Chugach Mountains, Alaska, United States
Nov. 21, 2025World Hello Day
Aug. 7, 2024St. Joseph North Pier Inner and Outer Lights, Michigan, USA
Who uses this grassy bridge?
When landscape met wilderness
Feb. 17, 2024Sassnitz lighthouse, Rügen, Mecklenburg-Western Pomerania
Oct. 6, 2025Anshun Bridge, Chengdu, China
Aug. 19, 2025Vancouver Island, British Columbia
Like paint on a canvas
Beautiful from all angles
Whats so funny?
Keyholes to the kingdom
Apr. 4, 2025Taktsang Palphug Monastery, Bhutan
The butterfly effect
Feb. 6, 20262026 Winter Olympics
Happy New Year’s from down under
This museum sets the prairie on fire
Zion National Park turns 103
Mar. 5, 2025Khao Sok National Park in Thailand
Oct. 20, 2025International Sloth Day
Feb. 3, 2025Ribblehead Viaduct, North Yorkshire, England
Dec. 15, 2024Lake Misurina, Dolomites, Italy
Jan. 22, 2025Ad-Deir, Petra, Jordan
Oct. 26, 2023Schönbrunn Palace Park, Vienna, Austria