| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1686 by topic |
|---|
| Arts and science |
| Leaders |
| Birth and death categories |
| Births – Deaths |
| Establishments and disestablishments categories |
| Establishments – Disestablishments |
| Works category |
| Gregorian calendar | 1686 MDCLXXXVI |
| Ab urbe condita | 2439 |
| Armenian calendar | 1135 ԹՎ ՌՃԼԵ |
| Assyrian calendar | 6436 |
| Balinese saka calendar | 1607–1608 |
| Bengali calendar | 1093 |
| Berber calendar | 2636 |
| English Regnal year | 1 Ja. 2 – 2 Ja. 2 |
| Buddhist calendar | 2230 |
| Burmese calendar | 1048 |
| Byzantine calendar | 7194–7195 |
| Chinese calendar | 乙丑年 (Wood Ox) 4383 or 4176 — to — 丙寅年 (Fire Tiger) 4384 or 4177 |
| Coptic calendar | 1402–1403 |
| Discordian calendar | 2852 |
| Ethiopian calendar | 1678–1679 |
| Hebrew calendar | 5446–5447 |
| Hindu calendars | |
| - Vikram Samvat | 1742–1743 |
| - Shaka Samvat | 1607–1608 |
| - Kali Yuga | 4786–4787 |
| Holocene calendar | 11686 |
| Igbo calendar | 686–687 |
| Iranian calendar | 1064–1065 |
| Islamic calendar | 1097–1098 |
| Japanese calendar | Jōkyō 3 (貞享３年) |
| Javanese calendar | 1609–1610 |
| Julian calendar | Gregorian minus 10 days |
| Korean calendar | 4019 |
| Minguo calendar | 226 before ROC 民前226年 |
| Nanakshahi calendar | 218 |
| Thai solar calendar | 2228–2229 |
| Tibetan calendar | 阴木牛年 (female Wood-Ox) 1812 or 1431 or 659 — to — 阳火虎年 (male Fire-Tiger) 1813 or 1432 or 660 |
1686 (MDCLXXXVI) was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Friday of the Julian calendar, the 1686th year of the Common Era (CE) and Anno Domini (AD) designations, the 686th year of the 2nd millennium, the 86th year of the 17th century, and the 7th year of the 1680s decade. As of the start of 1686, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.