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)


![Bayern [Digital]](https://nicolor.de/wp-content/uploads/Nicolor_Bayern_0606_800oL-600x600.jpg)

![Valentine [Digital]](https://nicolor.de/wp-content/uploads/Valentine_2432_800oL-600x600.jpg)

![Delta [Digital]](https://nicolor.de/wp-content/uploads/IMG_0965_800oL-600x600.jpg)

![Longitudinal [Digital]](https://nicolor.de/wp-content/uploads/Longitudinal_4333_web-600x600.jpg)

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