Good morning! 
It’s Sunday, 14 March 2021
(W10/D73/292 rem)
Today is: 
Pi Day π
Pi. It’s not just the sixteenth letter of the Greek alphabet you know.
Today (3/14 in the old tongue) is Pi Day, and any day that combines fun, education, and pie is a day worth celebrating!
Pi, also known by the Greek letter “π,” is a mathematical constant value that represents the ratio of the circumference of a circle to its diameter. That ratio is 3.14… (and so on). Also, pies are traditionally circular in shape, and their name (pie) is a homonym for pi, so it makes sense to celebrate Pi Day with pies. Also, if you enter the digits 3.14 into an old school digital calculator, and look at it upside down, it sort of looks like with word “pie”. (Now do 58008! 
)
March 14 is also Albert Einstein’s birthday, so all together it’s nothing short of a math nerd’s Nirvana.
Pi Day (whether written 3.14 or 3/14) celebrates the long history of this fantastic number, and the long journey science has taken (and is still on) to seek the end of a number known to be infinite in length.
To learn about pi, we need to go back a few thousand years and learn about this elusive number.
The value of pi was first calculated by Archimedes of Syracuse (287–212 BC), one of the greatest mathematicians of the ancient world.
However, it was first baptized with the Greek letter as its name when William Oughtred called it as such in his works dating back to 1647, later embraced by the scientific community when Leonhard Euler used the symbol in 1737.
But how did Pi Day end up in a country-wide phenomenon? For that, we need to travel to the Exploratorium in 1988 San Francisco, where it was thought up by physicist Larry Shaw.
Shaw linked March 14 with the first digits of pi (3.14) in order to organize a special day to bond the Exploratorium staff together, where he offered fruit pies and tea to everyone starting at 1:59 pm, the following three digits of the value. A few years later, after Larry’s daughter, Sara, remarked that the special date was also the birthday of Albert Einstein, they started celebrating the life of the world-famous scientist.
Pi Day became an annual Exploratorium tradition that still goes on today, and it didn’t take long for the idea to grow exponentially, hitting a peak on March 12, 2009, when the US Congress declared it a national holiday.
Subsequent, UNESCO’s 40th General Conference designated Pi Day as the International Day of Mathematics in November 2019.
Now, celebrated by math geeks all around the circumference of the world, Pi Day has become a pop culture phenomenon, with several places partaking in the activities, antics, observations and all the pie eating they can.
May Pi and Pie be with you all through your Sunday! π 
P.S. At Day #73, exactly 20% of the year is gone already.