My husband was commenting this morning that 22 July would be a more fitting Pi Day. 
Well, approximately.
Logically, it would be better to celebrate Pi day on 23rd July. Because both Pi and 23rd July are approximately 22/7.
Maybe the 355th day of the 113th month?
Homemade pie on Mar 14th: it’s not just a good idea, it’s the law.
Did you make that pi? It looks very delicious.
That does look really good!
For lunch today (well it’s now yesterday) I had pizza pie.
Yes, I make apple pies on π day. It’s what I like the most and the easiest to make.
Where the slash is commonly used in computer programming as a division operator, 3/14 is 0.214…, which is nowhere near π.
But if we use the European date convention, day first and then month, the 22 July is 22/7 which equals 3.1428… which is much closer to π.
I wonder if there’s any other date, any combination of one number in the range 1-12, and another in the range 1-31, where dividing one by the other gets you even closer than that to π than 22/7 does. Probably not.
Verified, via quick experiment in Excel. Of all the possible permutations of any number in the range 1-2, and any other number in the range 1-31, either divided by the other, there is only one in which the difference between the result and π is less than 0.002, and that is 22÷7.
PiDate.xlsx (25.3 KB)
There hasn’t been a Pi day since 1592.
Was there a pi day in 1592? The United States is the only country that writes dates month first, and it didn’t exist then. The origins of the U.S. convention seem to be uncertain.
3.141592
Is the US really the only country? It doesn’t seem like that counterintuitive a way of writing things. There are plenty of other situations where we write the larger unit first (hours:minutes, feet inches, etc.).
There are certainly big-endians that go y-m-d, like China, and there a few countries that are inconsistent. But the U.S. is the only mandatory middle-endian.
Every damn year it’s exactly the same thing. I don’t notice it’s Pi day until it’s too late in the day to score any pie, and I promise myself I’ll get two pies to make up for it, on Tau day. And most years I forget that. One year when I proposed to a friend we go out to a restaurant that serves pie, on Tau day, they only had one kind left. This is just not working out for me.
You could make a cherry pie and stab it 23 times to celebrate the Ides of March.
That seems a bit Brutal.
To be fully authentic is needs to be a Caeser salad.
PI = 3.141592653589793 (Good enough for NASA accuracy)
Let’s suppose we draw a circle with a diameter of 1 kilometer.
That means, using a pi value of 3.141, the circumference is accurate to a value of plus or minus 1 meter.
Using a pi value of 3.141592 the circumference accuracy has increased to ± 1 millimeter.
Going to pi = 3.141592653, we now have a circle whose circumference is accurate to ± 1 micrometer.
Using 15 decimal digits of pi, the circle’s circumference is now accurate to ± 1 picometers.
(A picometer is one trillionth of a meter.)
The diameter of the largest atom (cesium) is about 520 picometers.