Today is Pi Day.
Pi Day and Pi Approximation Day are two holidays held to celebrate the mathematical constant π (pi). Pi Day is observed on March 14 (3/14), due to π being roughly equal to 3.14. Pi Approximation Day is observed on July 22, due to π being roughly equal to 22/7.
Here is my photographic representation of the pi number from my Featurepics portfolio:
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To celebrate, I plan on balancing the checkbook.