Back 1787 Abkhazian 1787 Afrikaans 1787 ALS 1787 እ.ኤ.አ. Amharic 1787 AN 1787 Arabic 1787 ARY 1787 ARZ 1787 AST 1787 AVK
| Millennium: | 2nd millennium |
|---|---|
| Centuries: | 17th century – 18th century – 19th century |
| Decades: | 1750s 1760s 1770s – 1780s – 1790s 1800s 1810s |
| Years: | 1784 1785 1786 – 1787 – 1788 1789 1790 |
| Gregorian calendar | 1787 MDCCLXXXVII |
| Ab urbe condita | 2540 |
| Armenian calendar | 1236 ԹՎ ՌՄԼԶ |
| Assyrian calendar | 6537 |
| Balinese saka calendar | 1708–1709 |
| Bengali calendar | 1194 |
| Berber calendar | 2737 |
| British Regnal year | 27 Geo. 3 – 28 Geo. 3 |
| Buddhist calendar | 2331 |
| Burmese calendar | 1149 |
| Byzantine calendar | 7295–7296 |
| Chinese calendar | 丙午年 (Fire Horse) 4483 or 4423 — to — 丁未年 (Fire Goat) 4484 or 4424 |
| Coptic calendar | 1503–1504 |
| Discordian calendar | 2953 |
| Ethiopian calendar | 1779–1780 |
| Hebrew calendar | 5547–5548 |
| Hindu calendars | |
| - Vikram Samvat | 1843–1844 |
| - Shaka Samvat | 1708–1709 |
| - Kali Yuga | 4887–4888 |
| Holocene calendar | 11787 |
| Igbo calendar | 787–788 |
| Iranian calendar | 1165–1166 |
| Islamic calendar | 1201–1202 |
| Japanese calendar | Tenmei 7 (天明７年) |
| Javanese calendar | 1713–1714 |
| Julian calendar | Gregorian minus 11 days |
| Korean calendar | 4120 |
| Minguo calendar | 125 before ROC 民前125年 |
| Nanakshahi calendar | 319 |
| Thai solar calendar | 2329–2330 |
| Tibetan calendar | 阳火马年 (male Fire-Horse) 1913 or 1532 or 760 — to — 阴火羊年 (female Fire-Goat) 1914 or 1533 or 761 |
1787 (MDCCLXXXVII) was a common year starting on Monday of the Gregorian calendar and a common year starting on Friday of the Julian calendar, the 1787th year of the Common Era (CE) and Anno Domini (AD) designations, the 787th year of the 2nd millennium, the 87th year of the 18th century, and the 8th year of the 1780s decade. As of the start of 1787, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.