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What's Pi Day all about? Math, science, pies and more

  • Math enthusiasts worldwide celebrate Pi Day on March 14, highlighting its significance in mathematics and science, with roots dating back to 1988.
  • In 2009, Congress designated March 14 as Pi Day to promote interest in math and science.
  • NASA uses pi daily for precise calculations, such as the Earth's circumference, which is accurate to a quarter of an inch for every 25,000 miles.
  • The San Francisco Exploratorium hosts events, and festivities include contests, events, and pie-related specials in restaurants.
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What's Pi Day all about? Math, science, pies and more

College students, rocket scientists and math enthusiasts around the world are celebrating Pi Day. The holiday on March 14 — or 3/14 — correlates to the first three digits of the infinite number.

·United States
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NBC New York broke the news in New York, United States on Friday, March 14, 2025.
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