Pi day:

Pi Day, or International Day of Mathematics, celebrated on March 14 every year, honours the mathematical constant Pi, recognising its significance in mathematics. Join the 38th annual Pi (& pi ;) Day celebration at the Exploratorium on March 14, 2025. Enjoy math-inspired activities, presentations, a pi parade, and a free slice of pie. Celebrate Pi Day 2025 on March 14! Discover the significance of pi (π) in math, its history, and fun celebration ideas. Celebrate Pi Day on March 14 with math enthusiasts worldwide, honoring the infinite and practical uses of the mathematical constant.