Leap second

Quality:

Leap second - extra second inserted or removed to keep civil time in sync with the Earth's rotation. Article “Leap second” in English Wikipedia has 84.9 points for quality (as of July 1, 2026). The article contains 119 references and 19 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 4.47 points.

This article has the best quality in Chinese Wikipedia. However, this article is the most popular in English version.

In June 2026 the article “Leap second” was edited by 3 authors in English Wikipedia and written by 14 authors in all languages.

Since the creation of article “Leap second”, its content was written by 507 registered users of English Wikipedia and edited by 1888 registered Wikipedia users in all languages.

The article is cited 317 times in English Wikipedia and cited 2570 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #74 in November 2001
• Global: #86 in November 2001

The highest popularity rank from 2008:

• Local (English): #425 in June 2015
• Global: #659 in June 2015

There are 45 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, 2026 (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	Chinese (zh) 闰秒		84.911
2	English (en) Leap second		84.8967
3	Korean (ko) 윤초		75.7865
4	Japanese (ja) 閏秒		59.1294
5	Malay (ms) Saat lompat		57.3784
6	Greek (el) Εμβόλιμο δευτερόλεπτο		56.8634
7	Ukrainian (uk) Високосна секунда		46.4202
8	French (fr) Seconde intercalaire		35.769
9	Russian (ru) Дополнительная секунда		34.6871
10	German (de) Schaltsekunde		34.2609

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

#	Language	Popularity award	Relative popularity
1	English (en) Leap second		4 663 994
2	Japanese (ja) 閏秒		1 316 480
3	German (de) Schaltsekunde		584 009
4	Russian (ru) Дополнительная секунда		447 187
5	Spanish (es) Segundo intercalar		237 123
6	Polish (pl) Sekunda przestępna		231 393
7	French (fr) Seconde intercalaire		220 418
8	Chinese (zh) 闰秒		212 906
9	Italian (it) Secondo intercalare		180 662
10	Dutch (nl) Schrikkelseconde		144 893

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) Leap second		10 157
2	Japanese (ja) 閏秒		2 503
3	Russian (ru) Дополнительная секунда		2 187
4	German (de) Schaltsekunde		1 095
5	Chinese (zh) 闰秒		996
6	French (fr) Seconde intercalaire		521
7	Polish (pl) Sekunda przestępna		398
8	Italian (it) Secondo intercalare		323
9	Spanish (es) Segundo intercalar		279
10	Dutch (nl) Schrikkelseconde		204

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

#	Language	AI award	Relative AI
1	English (en) Leap second		507
2	German (de) Schaltsekunde		197
3	French (fr) Seconde intercalaire		130
4	Japanese (ja) 閏秒		106
5	Italian (it) Secondo intercalare		76
6	Dutch (nl) Schrikkelseconde		74
7	Russian (ru) Дополнительная секунда		74
8	Chinese (zh) 闰秒		69
9	Hebrew (he) דקה מעוברת		60
10	Polish (pl) Sekunda przestępna		58

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) Leap second		3
2	Arabic (ar) ثانية كبيسة		2
3	Greek (el) Εμβόλιμο δευτερόλεπτο		2
4	Japanese (ja) 閏秒		2
5	Catalan (ca) Segon intercalar		1
6	Basque (eu) Segundo gehigarri		1
7	Romanian (ro) Secundă intercalată		1
8	Serbo-Croatian (sh) Prijestupna sekunda		1
9	Chinese (zh) 闰秒		1
10	Belarusian (be) Высакосная секунда		0

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

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

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 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information