Pi Approximation Day

(Also known as Casual Pi Day)

Pi Approximation Day is observed next on Tuesday, July 22nd, 2025 (243 days from today).

• How many days until Pi Approximation Day?

Observed

Dates

Saturday, July 22nd, 2023

Monday, July 22nd, 2024

Tuesday, July 22nd, 2025

Wednesday, July 22nd, 2026

Thursday, July 22nd, 2027

Hashtags

#PiApproximationDay

#CasualPiDay

Sources

anydayguide.com

blogs.loc.gov

en.wikipedia.org

itotd.com

www.piapproximationday.com

www.piday.org

www.timeanddate.com

Also on Tuesday, July 22nd, 2025