Talk:Pi Day

approximation day?

22/7 is a better approximation to pi than 3.14 you know. Why would this be "approximation day" vs pi day? Anyway, the one linked citation is broken and I find no other evidence of this actually being "celebrated".. — Preceding unsigned comment added by Gjxj (talk • contribs) 12:04, 22 July 2019 (UTC)

Not only 22/7, but also stuff like ⁹³⁷²⁴⁶¹⁵⁸∕₂₉₈₃₄₁₅₆₇ and other fractions like that? And we should probably also provide a link to Pi, Pie, and the official Pi day website. 68.50.116.194 (talk) 20:21, 17 November 2021 (UTC)

But there's no way to have a recurring date with those fractions, unlike 22/7. oknazevad (talk) 23:08, 17 November 2021 (UTC)

Pi ≈ 22/7 actually maps to at least two dates. Like 22 July, 22 September is also a Pi approximation day because the name of September is literally a reference the 7th month, and therefore it can also be viewed as 22/7.

Another Pi approximation date could be the 116th day of a non-leap year, because 365/116 (or 365.24219/116) ≈ 3.15 are closest to the value of Pi. April 26 is the 116th day of the Gregorian calendar, it is the 117th day during a leap year, fortunately 366/117 ≈ 3.13 is closer to the value of Pi than the 116th day of a leap year.

One of the interesting alignments is that April 26 was the last day of the renowned mathematician Srinivasa Ramanujan. Re.educated (talk) 03:07, 17 December 2024 (UTC)

Another interesting alignment about September 22 is that it was the last day of Pal Singh Purewal who designed a Nanakshahi calendar reform such that Purewal's Nanakshahi New Year Day is aligned to March 14. Re.educated (talk) 04:12, 17 December 2024 (UTC)

Similarly, a Tau approximation date is the 58th day of the year because 365/58 and 366/58 are closer to the value of Tau than a divisor of 57 or 59. February 27 is the 58th day of the Gregorian calendar. Re.educated (talk) 03:47, 17 December 2024 (UTC)

Provide WP:reliable sources that those dates are considered variants of a "Pi approximation day", and we can decide if they should be included. Anything else is WP:Original research. Renerpho (talk) 05:05, 17 December 2024 (UTC)

humor aspect

Maybe the humorous aspect of the Pi-Day should be mentioned. As a mathematician I laughed a lot, when I first heard of the Pi-Day. But a lot of people I have talked to did not understand that kind of humor — Preceding unsigned comment added by 78.55.22.67 (talk) 18:54, 15 March 2021 (UTC)

I understand where you're going with this. Pi has multiple dimensions. Pie, pee, and crystal meth ('P' in NZ).

(Different from the NZ colloquialism for ‘pie, pea and pud’ 😉) Re.educated (talk) 02:41, 17 December 2024 (UTC)

wait Meth?! ThatRandomGuy147 (talk) 18:45, 14 March 2025 (UTC)

References

Suggestion

Add a thing at the beginning of the page called "√-1 2³ ∑ π'"? — Preceding unsigned comment added by 68.50.116.194 (talk) 20:15, 17 November 2021 (UTC)

What is the relevance of this? ISaveNewspapers (talk) 07:20, 30 August 2024 (UTC)

@ISaveNewspapers: "I ate some pie". It's a maths meme, which I think has no relevance to the article. Renerpho (talk) 07:32, 30 August 2024 (UTC)

Nothing but round pies are shown.

Some square pies should included. Pie are square; they have more area. BMJ-pdx (talk) 00:41, 14 March 2026 (UTC)

Since the number pi has to do with circles, I disagree. ~2026-86706-9 (talk) 14:37, 14 March 2026 (UTC)

But circles -- or, more accurately, the areas enclosed by circles -- have a lot to do with pie are square. BMJ-pdx (talk) 11:55, 26 March 2026 (UTC)

Image relevance

A grocery store selling pies for $3.14 on Pi Day

In this image, which is currently in the gallery, where does it mention Pi Day? This could be a coincidence. Renerpho (talk) 21:07, 14 March 2026 (UTC)

I've removed the image for now as there is no clear evidence that it is related to the topic. Renerpho (talk) 14:26, 26 March 2026 (UTC)