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International Atomic Time

time scale based on atomic clocks
CreativeWork time_standard Q119395

Facts

7 properties
Instance of
time standard
Official website
www.bipm.org[2]
Short name
TAI[4]
Authority
International Bureau of Weights and Measures[1]
Does not have part
leap second[5]
Native label
Temps atomique international[3]
P14541
3PvKIh, 3Qx2KW[6][7]
🏷️ Also known as
en International Atomic Time en TAI time en TAI ar توقيت ذري عالمي cs Atomový čas cs TAI cs Mezinárodní atomový čas de TAI de Temps Atomique International de Internationale Atomzeit es Tiempo Atómico Internacional es Hora atomica es Hora atómica es Tiempo atomico es Tiempo atómico es Tiempo Atomico Internacional fa زمان بین‌المللی اتمی fi kansainvälinen atomiaika fi TAI fr TAI
🔖 Identifiers · 8
Encyclopedia of China (Third Edition) ID
202749, 183743
Encyclopedia of Modern Ukraine ID
44612
Encyclopædia Britannica Online ID
science/International-Atomic-Time
FOLDOC ID
International+Atomic+Time
Freebase ID
/m/0h0q
Great Norwegian Encyclopedia ID
Internasjonal_atomtid
Microsoft Academic ID (discontinued)
105148271
PSH ID
382

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

🔗 Connections
Authority 1
International Bureau of Weights and Measures
Does not have part 1
leap second
Instance of 1
time standard
← Based on 1
UTC
← FactGrid item ID 1
Lacelle
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References

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

Direct Wikidata claims

  1. [1] ↑ . wikidata.org.
  2. [2] ↑ . wikidata.org.
  3. [3] ↑ . wikidata.org.
  4. [4] ↑ . wikidata.org.
  5. [5] ↑ . wikidata.org.
  6. [6] ↑ . wikidata.org.
  7. [7] ↑ . 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). International Atomic Time. Retrieved November 4, 2026, from https://4ort.xyz/entity/international-atomic-time
MLA “International Atomic Time.” 4ort.xyz Knowledge Graph, 4ort.xyz, 4 Nov. 2026, https://4ort.xyz/entity/international-atomic-time.
BibTeX @misc{4ortxyz_international-atomic-time_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{International Atomic Time}}, year = {2026}, url = {https://4ort.xyz/entity/international-atomic-time}, note = {Accessed: 2026-11-04}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): International Atomic Time — https://4ort.xyz/entity/international-atomic-time (retrieved 2026-11-04)

Canonical URL: https://4ort.xyz/entity/international-atomic-time · 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. 17w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    Official website → https://www.bipm.org/en/bipm-services/timescales/tai.html
    Does not have part → leap second
    Website → —
    Authority → International Bureau of Weights and Measures
    + 4 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
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