Today's also national "Save a Spider" day.
Not in THIS household.
My geometry teacher observed pi day and suggested pie be brought to school to enjoy during the period (I brought nothing, and was really counting on an Oreo pie someone promised to bring, but wound up with a slice of tasty berry pie instead). The assignment was to find the circumference and diameter of six circles and see if the circumference (found using a string to go around the circle) could be divided by the diameter to accurately find pi. If my classmates were smart enough to get a close average, I could get a free homework pass (I hate homework).
(This is, I promise, the last detail in parenthesis for this post.)