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2021 (MMXXI) was a common year starting on Friday of the Gregorian calendar, the 2021st year of the Common Era (CE) and Anno Domini (AD) designations, the 21st year of the 3rd millennium and the 21st century, and the 2nd year of the 2020s decade.
Events, Art & Measurement
Explore the main themes, entities and connections around 2021. Start with the topic map, then use the sections below for research and deeper semantic analysis.
Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.
High-confidence facts extracted from structured source data. Use them as anchors for further research.
Browse the full topic structure. Each item opens a new analysis centered on that subject.
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| 2021 | - Kali Yuga | 5121–5122 | 1.00 | infobox |
| 2021 | - Shaka Samvat | 1942–1943 | 1.00 | infobox |
| 2021 | - Vikram Samvat | 2077–2078 | 1.00 | infobox |
| 2021 | Ab urbe condita | 2774 | 1.00 | infobox |
| 2021 | Armenian calendar | 1470 ԹՎ ՌՆՀ | 1.00 | infobox |
| 2021 | Assyrian calendar | 6771 | 1.00 | infobox |
| 2021 | Baháʼí calendar | 177–178 | 1.00 | infobox |
| 2021 | Balinese saka calendar | 1942–1943 | 1.00 | infobox |
| 2021 | Bengali calendar | 1427–1428 | 1.00 | infobox |
| 2021 | Berber calendar | 2971 | 1.00 | infobox |
| 2021 | British Regnal year | 69 Eliz. 2 – 70 Eliz. 2 | 1.00 | infobox |
| 2021 | Buddhist calendar | 2565 | 1.00 | infobox |
| 2021 | Burmese calendar | 1383 | 1.00 | infobox |
| 2021 | Byzantine calendar | 7529–7530 | 1.00 | infobox |
| 2021 | Chinese calendar | 庚子年 (Metal Rat) 4718 or 4511 — to — 辛丑年 (Metal Ox) 4719 or 4512 | 1.00 | infobox |
| 2021 | Coptic calendar | 1737–1738 | 1.00 | infobox |
| 2021 | Discordian calendar | 3187 | 1.00 | infobox |
| 2021 | Ethiopian calendar | 2013–2014 | 1.00 | infobox |
| 2021 | Gregorian calendar | 2021 MMXXI | 1.00 | infobox |
| 2021 | Hebrew calendar | 5781–5782 | 1.00 | infobox |
| 2021 | Holocene calendar | 12021 | 1.00 | infobox |
| 2021 | Igbo calendar | 1021–1022 | 1.00 | infobox |
| 2021 | Iranian calendar | 1399–1400 | 1.00 | infobox |
| 2021 | Islamic calendar | 1442–1443 | 1.00 | infobox |
| 2021 | Japanese calendar | Reiwa 3 (令和３年) | 1.00 | infobox |
| 2021 | Javanese calendar | 1954–1955 | 1.00 | infobox |
| 2021 | Juche calendar | 110 | 1.00 | infobox |
| 2021 | Julian calendar | Gregorian minus 13 days | 1.00 | infobox |
| 2021 | Korean calendar | 4354 | 1.00 | infobox |
| 2021 | Minguo calendar | ROC 110 民國110年 | 1.00 | infobox |
These clusters group vocabulary that occurs around closely connected concepts in the source material.
Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.