When is National Pi Day 2025? What to know about Pi Day activities for kids, songs, movies, jokes, deals, snack ideas and more.

While the U.S. may have 11 official federal holidays, there are actually thousands of quirky, themed days that make the calendar a whole lot more fun! One of the best—and most delicious—is Pi Day.

The crescent moon has a famously lofty place in Arab and Islamic culture. A symbol of transformation, it signals the ...