Pi Day: Fun facts and Why it matters in US

Math enthusiasts around the world, from college students to rocket scientists, celebrate Pi Day, which is March 14 or 3/14 the first three digits of an infinite number with many practical uses. Pi can calculate the circumference of a circle by measuring the diameter the distance straight across the circle’s middle and multiplying that by the 3.14-plus number. It’s not just math, though Every year the San Francisco museum that coined the holiday organizes events, including a parade around a circular plaque, called the Pi Shrine, 3.14 times and then, of course, festivities with lots of pie. NASA holds its annual Pi Day Challenge online, offering plenty of games and puzzles, some directly from the space agency’s own playbook, such as calculating the orbit of an asteroid or the distance a moon rover would need to travel each day to survey a certain lunar area.