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2011 (MMXI) was a common year starting on Saturday of the Gregorian calendar, the 2011th year of the Common Era (CE) and Anno Domini (AD) designations, the 11th year of the 3rd millennium and the 21st century, and the 2nd year of the 2010s decade.
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| 2011 | - Kali Yuga | 5111–5112 | 1.00 | infobox |
| 2011 | - Shaka Samvat | 1932–1933 | 1.00 | infobox |
| 2011 | - Vikram Samvat | 2067–2068 | 1.00 | infobox |
| 2011 | Ab urbe condita | 2764 | 1.00 | infobox |
| 2011 | Armenian calendar | 1460 ԹՎ ՌՆԿ | 1.00 | infobox |
| 2011 | Assyrian calendar | 6761 | 1.00 | infobox |
| 2011 | Baháʼí calendar | 167–168 | 1.00 | infobox |
| 2011 | Balinese saka calendar | 1932–1933 | 1.00 | infobox |
| 2011 | Bengali calendar | 1417–1418 | 1.00 | infobox |
| 2011 | Berber calendar | 2961 | 1.00 | infobox |
| 2011 | British Regnal year | 59 Eliz. 2 – 60 Eliz. 2 | 1.00 | infobox |
| 2011 | Buddhist calendar | 2555 | 1.00 | infobox |
| 2011 | Burmese calendar | 1373 | 1.00 | infobox |
| 2011 | Byzantine calendar | 7519–7520 | 1.00 | infobox |
| 2011 | Chinese calendar | 庚寅年 (Metal Tiger) 4708 or 4501 — to — 辛卯年 (Metal Rabbit) 4709 or 4502 | 1.00 | infobox |
| 2011 | Coptic calendar | 1727–1728 | 1.00 | infobox |
| 2011 | Discordian calendar | 3177 | 1.00 | infobox |
| 2011 | Ethiopian calendar | 2003–2004 | 1.00 | infobox |
| 2011 | Gregorian calendar | 2011 MMXI | 1.00 | infobox |
| 2011 | Hebrew calendar | 5771–5772 | 1.00 | infobox |
| 2011 | Holocene calendar | 12011 | 1.00 | infobox |
| 2011 | Igbo calendar | 1011–1012 | 1.00 | infobox |
| 2011 | Iranian calendar | 1389–1390 | 1.00 | infobox |
| 2011 | Islamic calendar | 1432–1433 | 1.00 | infobox |
| 2011 | Japanese calendar | Heisei 23 (平成２３年) | 1.00 | infobox |
| 2011 | Javanese calendar | 1943–1945 | 1.00 | infobox |
| 2011 | Juche calendar | 100 | 1.00 | infobox |
| 2011 | Julian calendar | Gregorian minus 13 days | 1.00 | infobox |
| 2011 | Korean calendar | 4344 | 1.00 | infobox |
| 2011 | Minguo calendar | ROC 100 民國100年 | 1.00 | infobox |
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