leap second

extra second inserted or removed to keep civil time in sync with the Earth's rotation
Event intercalation Q194230
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leap second

Summary

leap second is an intercalation[1]. It draws 861 Wikipedia views per month (intercalation category, ranking #1 of 3).[2]

Key Facts

  • leap second's image is recorded as Apanhei o 2012.jpg[3].
  • leap second's image is recorded as Leap Second - June 30, 2012.png[4].
  • leap second's instance of is recorded as intercalation[5].
  • leap second's follows is recorded as 23:59:59[6].
  • leap second's followed by is recorded as 00:00:00[7].
  • leap second's subclass of is recorded as second[8].
  • leap second's part of is recorded as UTC[9].
  • leap second's part of is recorded as 23:59[10].
  • leap second's Commons category is recorded as Leap second[11].
  • leap second was dissolved in +2035-00-00T00:00:00Z[12].
  • leap second's start time is recorded as +1972-06-30T00:00:00Z[13].
  • leap second's Freebase ID is recorded as /m/04pb3[14].
  • leap second's described at URL is recorded as https://www.nytimes.com/2022/11/14/science/time-leap-second.html[15].
  • leap second's described at URL is recorded as https://www.nytimes.com/2023/11/03/science/time-leap-second.html[16].
  • leap second's spoken text audio is recorded as Skudsekund2.ogg[17].
  • leap second's Stack Exchange tag is recorded as https://stackoverflow.com/tags/leap-second[18].
  • leap second's BBC Things ID is recorded as c2cdeb70-ad25-4922-b9bf-400cfd8c6fc6[19].
  • leap second's hashtag is recorded as LeapSecond[20].
  • leap second's Elhuyar ZTH ID is recorded as 136458[21].
  • leap second's on focus list of Wikimedia project is recorded as Wikipedia:Vital articles/Level/4[22].
  • leap second's schematic is recorded as Leapsecond.ut1-utc.svg[23].
  • leap second's Fandom article ID is recorded as calendars:Leap_second[24].
  • leap second's Microsoft Academic ID is recorded as 124476145[25].
  • leap second's Lex ID is recorded as skudsekund[26].
  • leap second's Namuwiki ID is recorded as 윤초[27].

Why It Matters

leap second draws 861 Wikipedia views per month (intercalation category, ranking #1 of 3).[2] It has Wikipedia articles in 29 language editions, a strong signal of global cultural recognition.[28] It is known by 27 alternative names across languages and contexts.[29]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . nature.com. nature.com. Provenance: wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . Freebase Data Dumps. wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . BBC Things. wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] . Wikidata sitelinks. wikidata.org.
  3. [29] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). leap second. Retrieved May 3, 2026, from https://4ort.xyz/entity/leap-second
MLA “leap second.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/leap-second.
BibTeX @misc{4ortxyz_leap-second_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{leap second}}, year = {2026}, url = {https://4ort.xyz/entity/leap-second}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): leap second — https://4ort.xyz/entity/leap-second (retrieved 2026-05-03)

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