This year is a big one for the math nerds out there — and for many, a once-in-a-lifetime occasion. That’s because 2025 is a “perfect square,” a number that’s the product of a squared integer — 45 ...

The sequence of perfect square years starts all the way back at 1 AD, and continues at increasingly wider intervals. As the number nnn grows larger, the gaps between successive perfect square years ...

Labor Day is a federal holiday in the United States observed on the first Monday of September to honor the labor movement and the contributions of American workers to the nation’s growth and ...