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1178 in various calendars
Gregorian calendar	1178; MCLXXVIII
Ab urbe condita	1931
Armenian calendar	627; ԹՎ ՈԻԷ
Assyrian calendar	5928
Balinese saka calendar	1099–1100
Bengali calendar	585
Berber calendar	2128
English Regnal year	24 Hen. 2 – 25 Hen. 2
Buddhist calendar	1722
Burmese calendar	540
Byzantine calendar	6686–6687
Chinese calendar	丁酉年 (Fire Rooster); 3875 or 3668; — to —; 戊戌年 (Earth Dog); 3876 or 3669
Coptic calendar	894–895
Discordian calendar	2344
Ethiopian calendar	1170–1171
Hebrew calendar	4938–4939
Hindu calendars
- Vikram Samvat	1234–1235
- Shaka Samvat	1099–1100
- Kali Yuga	4278–4279
Holocene calendar	11178
Igbo calendar	178–179
Iranian calendar	556–557
Islamic calendar	573–574
Japanese calendar	Jishō 2; (治承２年)
Javanese calendar	1085–1086
Julian calendar	1178; MCLXXVIII
Korean calendar	3511
Minguo calendar	734 before ROC; 民前734年
Nanakshahi calendar	−290
Seleucid era	1489/1490 AG
Thai solar calendar	1720–1721
Tibetan calendar	阴火鸡年; (female Fire-Rooster); 1304 or 923 or 151; — to —; 阳土狗年; (male Earth-Dog); 1305 or 924 or 152

Millennium:	2nd millennium
Centuries:	11th century; 12th century ; 13th century;
Decades:	1150s; 1160s; 1170s ; 1180s; 1190s;
Years:	1175; 1176; 1177; 1178 ; 1179; 1180; 1181;

Year 1178 (MCLXXVIII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar, the 1178th year of the Common Era (CE) and Anno Domini (AD) designations, the 178th year of the 2nd millennium, the 78th year of the 12th century, and the 9th year of the 1170s decade.

Events

June 30 – Emperor Frederick I (Barbarossa) is crowned King of Burgundy at Arles. He will repeat the ceremony in 1186. Returning to Germany, he begins proceedings against Henry III (the Lion), duke of Saxony, who has been charged by Saxon noblemen with breaking the king's peace.
July 17 – Saracen pirates, from the Balearic Islands, raid the Cistercian monastery of Saint Honorat on the Lérins Islands, and the city of Toulon, killing an estimated 300 and taking captives. The surviving captives are freed from the Balearic Islands in 1185.^[1]
King George III defeats a nobles' revolt and proclaims his 18-year-old daughter Tamar (the Great) as co-ruler of Georgia.
Orio Mastropiero is elected by the Council of Forty as doge of Venice, following the retirement of Sebastiano Ziani.
Portuguese forces under King Afonso I (the Conqueror) capture the city of Beja from the Almohads.^[2]

The Leaning Tower of Pisa begins to lean, as the third level is completed (approximate date).

Summer – Antipope Callixtus III submits to Pope Alexander III after having reigned for 10 years with support from Frederick I.
June 18 – Five monks from Canterbury see what is possibly the Giordano Bruno crater being formed.

^ Unité mixte de recherche 5648--Histoire et archéologie des mondes chrétiens et musulmans médiévaux. Pays d'Islam et monde latin, Xe-XIIIe siècle: textes et documents. Lyon: Presses Universitaires de Lyon.{{cite book}}: CS1 maint: numeric names: authors list (link)
^ Picard C. (1997). La mer et les musulmans d'Occident au Moyen Age. Paris: Presses Universitaires de France, p. 78.
^ "Antoku | emperor of Japan". Encyclopedia Britannica. Retrieved March 15, 2021.