円周率の日

Quality:

Pi Day - mathematical holiday on March 14. This event is the 501^st most popular in the global Wikipedia ranking of events. Article "円周率の日" in Japanese Wikipedia has 11.8 points for quality (as of July 1, 2025). The article contains 4 references and 4 sections. The article also contains quality flaw template, which reduce quality score.

This article has the best quality in English Wikipedia. Also, this article is the most popular in that language version.

Achievements in all the time:

Global Wikipedia:

The 501^st most popular in events.

Since the creation of article "円周率の日", its content was written by 42 registered users of Japanese Wikipedia and edited by 2301 registered Wikipedia users in all languages.

Pi Day is on the 501^st place in global ranking of events on Wikipedia in all the time.

The article is cited 31 times in Japanese Wikipedia and cited 870 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Japanese): #1015 in December 2003
• Global: #29 in March 2010

The highest popularity rank from 2008:

• Local (Japanese): #14993 in March 2016
• Global: #43 in March 2018

There are 48 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	English (en) Pi Day		60.6337
2	Greek (el) Ημέρα του πι		47.247
3	Croatian (hr) Dan broja pi		45.405
4	Indonesian (id) Hari Pi		43.0804
5	Serbo-Croatian (sh) Dan broja π		40.1644
6	Latin (la) Dies numeri π		36.2532
7	Arabic (ar) يوم ط		36.0859
8	German (de) Pi-Tag		34.7425
9	Hungarian (hu) Nemzetközi π-nap		33.7728
10	Malay (ms) Hari Pi		33.7711

The following table shows the most popular language versions of the article.

#	Language	Popularity award	Relative popularity
1	English (en) Pi Day		6 812 731
2	Spanish (es) Día de π		912 488
3	German (de) Pi-Tag		839 529
4	French (fr) Journée de pi		623 885
5	Italian (it) Giorno del pi greco		546 696
6	Russian (ru) День числа пи		508 402
7	Chinese (zh) 圓周率日		441 466
8	Portuguese (pt) Dia do Pi		421 789
9	Turkish (tr) Pi Günü		345 661
10	Polish (pl) Dzień Liczby Pi		317 852

The following table shows the language versions of the article with the highest popularity in the last month.

#	Language	Popularity award	Relative popularity
1	English (en) Pi Day		5 698
2	German (de) Pi-Tag		989
3	Persian (fa) روز پی		692
4	French (fr) Journée de pi		624
5	Spanish (es) Día de π		596
6	Russian (ru) День числа пи		567
7	Vietnamese (vi) Ngày số pi		386
8	Japanese (ja) 円周率の日		303
9	Chinese (zh) 圓周率日		260
10	Arabic (ar) يوم ط		244

The following table shows the language versions of the article with the highest Authors’ Interest.

#	Language	AI award	Relative AI
1	English (en) Pi Day		826
2	French (fr) Journée de pi		125
3	German (de) Pi-Tag		122
4	Italian (it) Giorno del pi greco		107
5	Hebrew (he) יום פאי		101
6	Spanish (es) Día de π		80
7	Dutch (nl) Pi-dag		77
8	Russian (ru) День числа пи		68
9	Turkish (tr) Pi Günü		54
10	Chinese (zh) 圓周率日		47

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

#	Language	AI award	Relative AI
1	English (en) Pi Day		6
2	Simple English (simple) Pi Day		2
3	Vietnamese (vi) Ngày số pi		2
4	German (de) Pi-Tag		1
5	Persian (fa) روز پی		1
6	French (fr) Journée de pi		1
7	Hebrew (he) יום פאי		1
8	Arabic (ar) يوم ط		0
9	Azerbaijani (az) Pi Günü		0
10	Belarusian (be) Дзень Пі		0

The following table shows the language versions of the article with the highest number of citations.

On 8 July 2025 in multilingual Wikipedia, Internet users most often read articles on the following topics: Diogo Jota, João Pedro, Ozzy Osbourne, Laura Siegemund, Aryna Sabalenka, Julian McMahon, Jurassic World Rebirth, 2025 FIFA Club World Cup, Amanda Anisimova, F1.

In Japanese Wikipedia the most popular articles on that day were: 遠野なぎこ, 神谷宗幣, ジャーメイン良, 秀和幡ヶ谷レジデンス, 参政党, 内田有紀, 鶴保庸介, 牛田茉友, 田久保眞紀, EAFF E-1サッカー選手権.

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information