# 1778

1778 in other calendars| Gregorian calendar | 1778 *MDCCLXXVIII* |
| Ab urbe condita | 2531 |
| Armenian calendar | 1227 ԹՎ ՌՄԻԷ |
| Assyrian calendar | 6528 |
| Balinese saka calendar | 1699–1700 |
| Bengali calendar | 1185 |
| Berber calendar | 2728 |
| British Regnal year | 18 Geo. 3 – 19 Geo. 3 |
| Buddhist calendar | 2322 |
| Burmese calendar | 1140 |
| Byzantine calendar | 7286–7287 |
| Chinese calendar | 丁酉年 (Fire Rooster) 4474 or 4414     *— to —* 戊戌年 (Earth Dog) 4475 or 4415 |
| Coptic calendar | 1494–1495 |
| Discordian calendar | 2944 |
| Ethiopian calendar | 1770–1771 |
| Hebrew calendar | 5538–5539 |
| Hindu calendars |  |
|  - *Vikram Samvat* | 1834–1835 |
|  - *Shaka Samvat* | 1699–1700 |
|  - *Kali Yuga* | 4878–4879 |
| Holocene calendar | 11778 |
| Igbo calendar | 778–779 |
| Iranian calendar | 1156–1157 |
| Islamic calendar | 1191–1192 |
| Japanese calendar | An'ei 7 (安永７年) |
| Javanese calendar | 1703–1704 |
| Julian calendar | Gregorian minus 11 days |
| Korean calendar | 4111 |
| Minguo calendar | 134 before ROC 民前134年 |
| Nanakshahi calendar | 310 |
| Thai solar calendar | 2320–2321 |
| Tibetan calendar | མེ་མོ་བྱ་ལོ་ (female Fire-Bird) 1904 or 1523 or 751     *— to —* ས་ཕོ་ཁྱི་ལོ་ (male Earth-Dog) 1905 or 1524 or 752 |

**1778** (MDCCLXXVIII)
was a common year starting on Thursday of the Gregorian calendar and a common year starting on Monday of the Julian calendar, the 1778th year of the Common Era (CE) and *Anno Domini* (AD) designations, the 778th year of the 2nd millennium, the 78th year of the 18th century, and the 9th year of the 1770s decade. As of the start of 1778, the Gregorian calendar was
11 days ahead of the Julian calendar, which remained in localized use until 1923.

## Events

* The term thoroughbred was first used in the United States in an advertisement in a Kentucky gazette to describe a New Jersey stallion called Pilgarlick.
* January 18 – Third Pacific expedition of Capt. James Cook, with ships *HMS Resolution* and *HMS Discovery*, first see O'ahu then Kaua'i in the Hawaiian Islands, which he names the "Sandwich Islands".
* February 5 – South Carolina becomes the first state to ratify the Articles of Confederation.
* February 6 – American Revolutionary War: In Paris the Treaty of Alliance and the Treaty of Amity and Commerce are signed by the United States and France beginning official recognition of the new republic.
* February 23 – American Revolutionary War: Baron von Steuben arrives at Valley Forge, Pennsylvania and begins to train the Continental Army.
* July 10 – American Revolutionary War: Louis XVI of France declares war on the United Kingdom of Great Britain.
* July 27 – American Revolution: First Battle of Ushant – British and French fleets fight to a standoff.
* August 26 – Triglav, at 2,864 metres above sea level the highest peak of Slovenia, was ascended for the first time by four brave men: Luka Korošec, Matevž Kos, Štefan Rožič and Lovrenc Willomitzer on Sigismund Zois's initiative.
* September – The Massachusetts Banishment Act, providing punishment for Loyalists, is passed.
* November 26 – In the Hawaiian Islands, Captain James Cook becomes the first European to discover Maui.
* France introduced the first state-controlled brothel.
* The first settlement was made in the area of what is now Louisville, Kentucky by 13 families under Col. George Rogers Clark.
* Phillips Academy, the most prestigious secondary boarding school in the United States, was founded by Samuel Phillips Jr.

## Births

*for more information, see Category:1778 births.*
## Deaths

*for more information, see Category:1778 deaths.*