2015 National Pi Day is a **once- in-a-century celebration.** At 9:26:53 a.m. on Saturday it will be

3.14.15 9:26:53

This 10 digit Pi day celebration only happens **once every 100 years!**How are people around the US going to celebrate National Pi Day? Here are some ideas! Well, you can make a pie, give the gift of a pie, eat pie at home, eat a pie at work with co-workers, or just buy a pie!

Downtown Cedar Falls, IA Main St. is hosting National Pi Day: You can check out the events here

Okay.. it’s not all about pie. Here are **Did you know?** facts.. Pi style.

1. Pi is the most famous mathematical constant

2. Pi is an infinite series

3. Pi day is also Einstein’s birthday

4. Pi has been known for almost 4,000 years

5. In 2005, Chao Lu of China held the world record for most digits memorized with 67,890; it took him 24 hours and 4 minutes to recite. (guinness world records)

Pi (π 3.14…) is a much beloved mathematical constant worldwide. Mathematically, pi is the number of times a circle’s diameter (center line) will fit around its circumference (perimeter).

And if you forgot, we are sure it will resonate in your mind after you **watch this Pi day video.**