Pi Day is an annual celebration of the mathematical constant π. It is observed on March 14 (the 3rd month) since 3, 1, and 4 are the first three significant figures of pi, and was first celebrated in the United States in 1988.
Pi is a special number that describes how many times the diameter of a circle fits into its circumference – about 3.14 times.
I need pi quite often, e.g. to calculate necklines.
And now also for striped socks.
![Pi socks [Digital]](https://nicolor.de/wp-content/uploads/IMG_2483_800oL.jpg)
![Pi socks [Digital] - Image 2](https://nicolor.de/wp-content/uploads/IMG_2486_800oL.jpg)


![Submarine [Digital]](https://nicolor.de/wp-content/uploads/IMG_5789_800oL-600x600.jpg)

![Di Traverso [Digital]](https://nicolor.de/wp-content/uploads/Nicolor_DiTraverso_1277_800oL-600x600.jpg)

![Dehnungsfuge [Digital]](https://nicolor.de/wp-content/uploads/Nicolor_Dehnungsfuge_5001-600x600.jpg)

![Caspar [Digital]](https://nicolor.de/wp-content/uploads/IMG_4916_800oL-600x600.png)

![Jogging [Digital]](https://nicolor.de/wp-content/uploads/IMG_6536_800oL-600x600.jpg)