Pythagorean Triple Square Day, as one man affectionately calls 9/16/25, is a day like no other this century. On 9/16/25, celebrate a date of mathematical beauty Once a century, a very special day ...

NEW ORLEANS — The two women and St. Mary’s Academy graduates who used trigonometry to prove the 2000-year-old Pythagorean Theorem math equation, had their findings confirmed by the math experts after ...

According to Timeanddate, this means September 27, 2025 isn’t just a square date, it’s a global square date, which occurs only eight times this century. The next global square date will take place on ...

This is an updated version of a story first published on May 5, 2024. For many high school students returning to class, it may seem like geometry and trigonometry were created by the Greeks as a form ...

Once a century, a very special day comes along. That day is today — 9/16/25. Pi Day (3/14) often comes with sweet treats; Square Root Day (4/4/16 or 5/5/25, for example) has a certain numerical rhyme.