Skip to main content
HolidayList
🌍 observance

Pi Approximation

Wednesday, July 22, 2026

— days to go

In 287, BC. Archimedes Approximates Pi. The Greek mathematician, Archimedes, approximated pi as 3.14, setting the stage for developing calculus and trigonometry

History

BCArchimedes Approximates Pi. The Greek mathematician, Archimedes, approximated pi as 3.14, setting the stage for developing calculus and trigonometry

How It's Celebrated

Pi Approximation is observed by recognizing the importance of the day, learning about its background and significance, and sharing awareness with others through conversation and social media. Many people take time to reflect on the meaning of the observance and participate in relevant activities or community events.

Other Years

2021 Thu
22 Jul
2022 Fri
22 Jul
2023 Sat
22 Jul
2024 Mon
22 Jul
2025 Tue
22 Jul
2026 Wed
7/22
2027 Thu
22 Jul
2028 Sat
22 Jul
2029 Sun
22 Jul

Countries

🇺🇸 US

You Might Also Like

View all →
🌍 observance Jan 1

Apple Gifting

BCRoman Apple Traditions. Romans used apples in various religious and social rituals during festivals such as Saturnalia, symbolizing fertility and abundance

US
🌍 observance Jan 1

Copyright Law

In 1709, Statute of. Anne. The first real copyright law, known as the Statute of Anne, was enacted in England, protecting the rights of authors and creators

GB
🌍 observance Jan 1

Ellis Island

In 1892, Ellis. Island Opens. On January 1st, 1892, Ellis Island started operating as the United States' largest immigration station

US
🌍 observance Jan 1

National Hangover

In 1800, s. Origin of the term 'Hangover'The term 'hangover' came into being in the late 19th Century. It was used to describe the aftereffects of drinking too much alcohol

US