| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1637 by topic |
|---|
| Arts and science |
| Leaders |
| Birth and death categories |
| Births – Deaths |
| Establishments and disestablishments categories |
| Establishments – Disestablishments |
| Works category |
| Gregorian calendar | 1637 MDCXXXVII |
| Ab urbe condita | 2390 |
| Armenian calendar | 1086 ԹՎ ՌՁԶ |
| Assyrian calendar | 6387 |
| Balinese saka calendar | 1558–1559 |
| Bengali calendar | 1044 |
| Berber calendar | 2587 |
| English Regnal year | 12 Cha. 1 – 13 Cha. 1 |
| Buddhist calendar | 2181 |
| Burmese calendar | 999 |
| Byzantine calendar | 7145–7146 |
| Chinese calendar | 丙子年 (Fire Rat) 4334 or 4127 — to — 丁丑年 (Fire Ox) 4335 or 4128 |
| Coptic calendar | 1353–1354 |
| Discordian calendar | 2803 |
| Ethiopian calendar | 1629–1630 |
| Hebrew calendar | 5397–5398 |
| Hindu calendars | |
| - Vikram Samvat | 1693–1694 |
| - Shaka Samvat | 1558–1559 |
| - Kali Yuga | 4737–4738 |
| Holocene calendar | 11637 |
| Igbo calendar | 637–638 |
| Iranian calendar | 1015–1016 |
| Islamic calendar | 1046–1047 |
| Japanese calendar | Kan'ei 14 (寛永１４年) |
| Javanese calendar | 1558–1559 |
| Julian calendar | Gregorian minus 10 days |
| Korean calendar | 3970 |
| Minguo calendar | 275 before ROC 民前275年 |
| Nanakshahi calendar | 169 |
| Thai solar calendar | 2179–2180 |
| Tibetan calendar | 阳火鼠年 (male Fire-Rat) 1763 or 1382 or 610 — to — 阴火牛年 (female Fire-Ox) 1764 or 1383 or 611 |
1637 (MDCXXXVII) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1637th year of the Common Era (CE) and Anno Domini (AD) designations, the 637th year of the 2nd millennium, the 37th year of the 17th century, and the 8th year of the 1630s decade. As of the start of 1637, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.