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Pi Approximation Day
| Date | Event | Place |
|---|---|---|
| Jul 22, 2025 | Pi Approximation Day 2025 | World |
Information about Pi Approximation Day
The first digits of the mathematical constant Pi on a blackboard.
Significance: Pi Approximation Day is observed on July 22 (or 22/7 in the day/month date format), since the fraction 22/7 is a common approximation of the mathematical constant Pi, which dates from Archimedes.
Type:
Appreciation Days
Celebrations:
Celebrate Pi
Observed by:
Mathematicians
Location:
World
Initiator:
Mathematicans
Start year:
1980's
