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1668 (MDCLXVIII) was a leap year starting on Sunday of the Gregorian calendar and a leap year starting on Wednesday of the Julian calendar, the 1668th year of the Common Era (CE) and Anno Domini (AD) designations, the 668th year of the 2nd millennium, the 68th year of the 17th century, and the 9th year of the 1660s decade. As of the start of 1668, the…
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| 1668 | - Kali Yuga | 4768–4769 | 1.00 | infobox |
| 1668 | - Shaka Samvat | 1589–1590 | 1.00 | infobox |
| 1668 | - Vikram Samvat | 1724–1725 | 1.00 | infobox |
| 1668 | Ab urbe condita | 2421 | 1.00 | infobox |
| 1668 | Armenian calendar | 1117 ԹՎ ՌՃԺԷ | 1.00 | infobox |
| 1668 | Assyrian calendar | 6418 | 1.00 | infobox |
| 1668 | Balinese saka calendar | 1589–1590 | 1.00 | infobox |
| 1668 | Bengali calendar | 1074–1075 | 1.00 | infobox |
| 1668 | Berber calendar | 2618 | 1.00 | infobox |
| 1668 | Buddhist calendar | 2212 | 1.00 | infobox |
| 1668 | Burmese calendar | 1030 | 1.00 | infobox |
| 1668 | Byzantine calendar | 7176–7177 | 1.00 | infobox |
| 1668 | Chinese calendar | 丁未年 (Fire Goat) 4365 or 4158 — to — 戊申年 (Earth Monkey) 4366 or 4159 | 1.00 | infobox |
| 1668 | Coptic calendar | 1384–1385 | 1.00 | infobox |
| 1668 | Discordian calendar | 2834 | 1.00 | infobox |
| 1668 | English Regnal year | 19 Cha. 2 – 20 Cha. 2 | 1.00 | infobox |
| 1668 | Ethiopian calendar | 1660–1661 | 1.00 | infobox |
| 1668 | Gregorian calendar | 1668 MDCLXVIII | 1.00 | infobox |
| 1668 | Hebrew calendar | 5428–5429 | 1.00 | infobox |
| 1668 | Holocene calendar | 11668 | 1.00 | infobox |
| 1668 | Igbo calendar | 668–669 | 1.00 | infobox |
| 1668 | Iranian calendar | 1046–1047 | 1.00 | infobox |
| 1668 | Islamic calendar | 1078–1079 | 1.00 | infobox |
| 1668 | Japanese calendar | Kanbun 8 (寛文8年) | 1.00 | infobox |
| 1668 | Javanese calendar | 1590–1591 | 1.00 | infobox |
| 1668 | Julian calendar | Gregorian minus 10 days | 1.00 | infobox |
| 1668 | Korean calendar | 4001 | 1.00 | infobox |
| 1668 | Minguo calendar | 244 before ROC 民前244年 | 1.00 | infobox |
| 1668 | Nanakshahi calendar | 200 | 1.00 | infobox |
| 1668 | Thai solar calendar | 2210–2211 | 1.00 | infobox |
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