An annual celebration of the mathematical constant pi — known as Pi Day — originated in the Bay ... reflections through the ...

March 14, or 3/14, is recognized by math geeks as Pi day. That happens every year. But as UBS's Art Cashin notes, next year's Pi day will be a once-in-a-century Pi day. "At 9:26:53 a.m., they can ...

Pi Approximation Day 2023: The ratio of a circle's circumference to its diameter is called Pi. The value of Pi is approximately 3.14. The value of Pi has been calculated to trillions of digits.