Y1C Problem - problem in computer systems using the Japanese calender (Showa 100). Article “昭和100年問題” in Japanese Wikipedia has 14.4 points for quality (as of July 1, 2025). The article contains 8 references and 5 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 0.76 points.
In June 2025 the article “昭和100年問題” was edited by 1 authors in Japanese Wikipedia and written by 1 authors in all languages.
Since the creation of article “昭和100年問題”, its content was written by 33 registered users of Japanese Wikipedia and edited by 33 registered Wikipedia users in all languages.
The article is cited 39 times in Japanese Wikipedia and cited 39 times in all languages.
The highest Authors Interest rank from 2001:
The highest popularity rank from 2008:
There is 1 language version 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).
| Best Rank | Japanese: #4519 01.2019 |
Global: #92958 01.2019 |
| Best Rank | Japanese: #2155 04.2019 |
Global: #149732 04.2019 |
On 9 December 2025 in multilingual Wikipedia, Internet users most often read articles on the following topics: Stranger Things, 2026 FIFA World Cup, Lando Norris, Millie Bobby Brown, Sean Combs, It: Welcome to Derry, ChatGPT, Zootopia 2, deaths in 2025, Cassie Ventura.
In Japanese Wikipedia the most popular articles on that day were: 堂上隼人, 濱田太貴, 辰見鴻之介, 中村獅童 (2代目), 松浦慶斗, 井上広大, 知野直人, 平沼翔太, 佐藤直樹 (野球), 濱将乃介.
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
$$Quality=1/c∑↙{i=1}↖c nm_i-RS=1/5(5.67+2.89+0+16.13+51.06)-0.76$$
where:
The results of the calculations may be slightly different because of rounded values of normalized metrics in formulas
