1670
| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1670 by topic: | |
| Arts and Science | |
| Architecture - Art - Literature - Music - Science | |
| Lists of leaders | |
| State leaders – Colonial governors – Religious leaders | |
| Birth and death categories | |
| Births - Deaths | |
| Establishments and disestablishments categories | |
| Establishments - Disestablishments | |
| Works category | |
| Works | |
| Gregorian calendar | 1670 MDCLXX |
| Ab urbe condita | 2423 |
| Armenian calendar | 1119 ԹՎ ՌՃԺԹ |
| Assyrian calendar | 6420 |
| Bengali calendar | 1077 |
| Berber calendar | 2620 |
| English Regnal year | 21 Cha. 2 – 22 Cha. 2 |
| Buddhist calendar | 2214 |
| Burmese calendar | 1032 |
| Byzantine calendar | 7178–7179 |
| Chinese calendar |
己酉年 (Earth Rooster) 4366 or 4306 — to — 庚戌年 (Metal Dog) 4367 or 4307 |
| Coptic calendar | 1386–1387 |
| Discordian calendar | 2836 |
| Ethiopian calendar | 1662–1663 |
| Hebrew calendar | 5430–5431 |
| Hindu calendars | |
| - Vikram Samvat | 1726–1727 |
| - Shaka Samvat | 1591–1592 |
| - Kali Yuga | 4770–4771 |
| Holocene calendar | 11670 |
| Igbo calendar | 670–671 |
| Iranian calendar | 1048–1049 |
| Islamic calendar | 1080–1081 |
| Japanese calendar |
Kanbun 9 (寛文９年) |
| Javanese calendar | 1592–1593 |
| Julian calendar | Gregorian minus 10 days |
| Korean calendar | 4003 |
| Minguo calendar | 242 before ROC 民前242年 |
| Nanakshahi calendar | 202 |
| Thai solar calendar | 2212–2213 |
1670 (MDCLXX) was a common year starting on Wednesday (dominical letter E) of the Gregorian calendar and a common year starting on Saturday (dominical letter B) of the Julian calendar, the 1670th year of the Common Era (CE) and Anno Domini (AD) designations, the 670th year of the 2nd millennium, the 70th year of the 17th century, and the 1st year of the 1670s decade. As of the start of 1670, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
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