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21

year
Intangible year Q23772

Facts

8 properties
Instance of
year
Follows
20[2]
Followed by
22[3]
Part of
20s[4]
Different from
21[6]
Has list
list of state leaders in 21[7]
Permanent duplicated item
Wikidata item[8]
Point in time
21[5]
🏷️ Also known as
en 21 en 21 AD en 774 AUC ar 21م ar ٢١ da 21 e.Kr. es Ano 21 es Año 21 fa ۲۱ fa 21 fa ۲۱ میلادی ja 21年 ko 21년 nl XXI ru 21 ru 21 год sv 21 e.Kr. th ค.ศ. 21 th พ.ศ. 564
🔖 Identifiers · 2
Cathopedia article ID
21
Topic's main category
Category:21

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections
← Category combines topics 2
Category:21 deaths, Category:21 births
Belongs to 1
20s
Category for births in this time period 1
Category:21 births
Category for deaths in this time period 1
Category:21 deaths
Different from 1
21
Followed by 1
22
Followed by (predecessor) 1
22
Follows 1
20
Has list 1
list of state leaders in 21
Instance of 1
year
Part of 1
20s
Preceded by (successor) 1
20
Topic's main category 1
Category:21
← Category's main topic 1
Category:21
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Summary

21 is a year[1].

References

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

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. 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). 21. Retrieved November 4, 2026, from https://4ort.xyz/entity/21-q23772-2
MLA “21.” 4ort.xyz Knowledge Graph, 4ort.xyz, 4 Nov. 2026, https://4ort.xyz/entity/21-q23772-2.
BibTeX @misc{4ortxyz_21-q23772-2_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{21}}, year = {2026}, url = {https://4ort.xyz/entity/21-q23772-2}, note = {Accessed: 2026-11-04}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 21 — https://4ort.xyz/entity/21-q23772-2 (retrieved 2026-11-04)

Canonical URL: https://4ort.xyz/entity/21-q23772-2 · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 20w ago · MsynBot bot · 2026-06-19 view diff on Wikidata ↗
    Followed by → —
    Category for deaths in this time period → Category:21 deaths
    Topic's main category → Category:21
    Followed by → 22
    + 13 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ add badge sitelink to redirect to enwiki sitelink; see [[Wikidata:Sitelinks to redirects]] for details #msynbotTask10"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.