1999

year
Intangible calendar_year Q2091
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1999

Summary

1999 is a calendar year[1]. 1999 ranks in the top 1% of calendar_year entities by monthly Wikipedia readership (948 views/month).[2]

Key Facts

  • 1999's instance of is recorded as calendar year[3].
  • 1999's instance of is recorded as common year starting and ending on Friday[4].
  • 1999's follows is recorded as 1998[5].
  • 1999's followed by is recorded as 2000[6].
  • 1999's Library of Congress authority ID is recorded as sh98004075[7].
  • 1999's part of is recorded as 1990s[8].
  • 1999's part of is recorded as Gregorian calendar[9].
  • 1999's Commons category is recorded as 1999[10].
  • 1999's said to be the same as is recorded as 11999 HE[11].
  • 1999's said to be the same as is recorded as 1999[12].
  • 1999's has part is recorded as January 1999[13].
  • 1999's has part is recorded as February 1999[14].
  • 1999's has part is recorded as March 1999[15].
  • 1999's has part is recorded as April 1999[16].
  • 1999's has part is recorded as May 1999[17].
  • 1999's has part is recorded as June 1999[18].
  • 1999's has part is recorded as July 1999[19].
  • 1999's has part is recorded as August 1999[20].
  • 1999's has part is recorded as September 1999[21].
  • 1999's has part is recorded as October 1999[22].
  • 1999's has part is recorded as November 1999[23].
  • 1999's has part is recorded as December 1999[24].
  • 1999's point in time is recorded as +1999-01-01T00:00:00Z[25].
  • 1999's NL CR AUT ID is recorded as ch969105[26].
  • 1999's topic's main category is recorded as Category:1999[27].

Body

Works and Contributions

Things named for 1999 include C99 {1-15-89}Wilkerson Dustin Roberts bounty[28], an ISO standard edition[29]; LK-99[30], a chemical substance[31]; and SQL:1999[32], an ISO standard edition[33], founded in 1999[34].

Why It Matters

1999 ranks in the top 1% of calendar_year entities by monthly Wikipedia readership (948 views/month).[2] 1999 has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[35] 1999 is known by 10 alternative names across languages and contexts.[36]

Entities named for 1999 include C99 {1-15-89}Wilkerson Dustin Roberts bounty[28], an ISO standard edition[29]; LK-99[30], a chemical substance[31]; and SQL:1999[32], an ISO standard edition[33], founded in 1999[34].

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] . github.com. Retrieved . github.com. Provenance: wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . 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.

Inverse relationships (entities pointing at this one)

  1. [28] . wikidata.org. → on this site
  2. [30] . wikidata.org. → on this site
  3. [32] . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [29] . Wikidata. wikidata.org. → on this site
  2. [31] . Wikidata. wikidata.org. → on this site
  3. [33] . Wikidata. wikidata.org. → on this site
  4. [34] . Wikidata. wikidata.org. → on this site

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [35] . Wikidata sitelinks. wikidata.org.
  3. [36] . 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). 1999. Retrieved May 3, 2026, from https://4ort.xyz/entity/1999-q2091
MLA “1999.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/1999-q2091.
BibTeX @misc{4ortxyz_1999-q2091_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{1999}}, year = {2026}, url = {https://4ort.xyz/entity/1999-q2091}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 1999 — https://4ort.xyz/entity/1999-q2091 (retrieved 2026-05-03)

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