1631
| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1631 by topic: | |
| Arts and Science | |
| Architecture - Art - Literature - Music - Science | |
| Lists of leaders | |
| State leaders – Colonial & territorial governors – Religious leaders | |
| Birth and death categories | |
| Births - Deaths | |
| Establishments and disestablishments categories | |
| Establishments - Disestablishments | |
| Works category | |
| Works | |
| Gregorian calendar | 1631 MDCXXXI |
| Ab urbe condita | 2384 |
| Armenian calendar | 1080 ԹՎ ՌՁ |
| Assyrian calendar | 6381 |
| Bengali calendar | 1038 |
| Berber calendar | 2581 |
| English Regnal year | 6 Cha. 1 – 7 Cha. 1 |
| Buddhist calendar | 2175 |
| Burmese calendar | 993 |
| Byzantine calendar | 7139–7140 |
| Chinese calendar |
庚午年 (Metal Horse) 4327 or 4267 — to — 辛未年 (Metal Goat) 4328 or 4268 |
| Coptic calendar | 1347–1348 |
| Discordian calendar | 2797 |
| Ethiopian calendar | 1623–1624 |
| Hebrew calendar | 5391–5392 |
| Hindu calendars | |
| - Vikram Samvat | 1687–1688 |
| - Shaka Samvat | 1552–1553 |
| - Kali Yuga | 4731–4732 |
| Holocene calendar | 11631 |
| Igbo calendar | 631–632 |
| Iranian calendar | 1009–1010 |
| Islamic calendar | 1040–1041 |
| Japanese calendar |
Kan'ei 8 (寛永８年) |
| Javanese calendar | 1552–1553 |
| Julian calendar | Gregorian minus 10 days |
| Korean calendar | 3964 |
| Minguo calendar | 281 before ROC 民前281年 |
| Nanakshahi calendar | 163 |
| Thai solar calendar | 2173–2174 |
1631 (MDCXXXI) 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 1631st year of the Common Era (CE) and Anno Domini (AD) designations, the 631st year of the 2nd millennium, the 31st year of the 17th century, and the 2nd year of the 1630s decade. As of the start of 1631, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
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