__NOTOC__ Year 366 ( CCCLXVI) was a

common year starting on Sunday A common year starting on Sunday is any non-leap year (i.e. a year with 365 days) that begins on Sunday, 1 January, and ends on Sunday, 31 December. Its dominical letter hence is A. The most recent year was 2017 and the next one will be 2023 in the ...

of the

Julian calendar The Julian calendar, proposed by Roman consul Julius Caesar in 46 BC, was a reform of the Roman calendar. It took effect on , by edict. It was designed with the aid of Greek mathematicians and astronomers such as Sosigenes of Alexandr ...

. At the time, it was known as the Year of the Consulship of Gratianus and Dagalaifus (or, less frequently, year 1119 '' Ab urbe condita''). The denomination 366 for this year has been used since the early medieval period, when the

Anno Domini The terms (AD) and before Christ (BC) are used to label or number years in the Julian and Gregorian calendars. The term is Medieval Latin and means 'in the year of the Lord', but is often presented using "our Lord" instead of "the Lord", ...

calendar era A calendar era is the period of time elapsed since one '' epoch'' of a calendar and, if it exists, before the next one. For example, it is the year as per the Gregorian calendar, which numbers its years in the Western Christian era (the Copti ...

became the prevalent method in Europe for naming years.

Events

By place

Roman Empire

* January 2 – The Alamanni cross the frozen

Rhine ), Surselva, Graubünden, Switzerland , source1_coordinates= , source1_elevation = , source2 = Rein Posteriur/Hinterrhein , source2_location = Paradies Glacier, Graubünden, Switzerland , source2_coordinates= , so ...

in large numbers, and invade the Gallic provinces. They capture

Alsace Alsace (, ; ; Low Alemannic German/ gsw-FR, Elsàss ; german: Elsass ; la, Alsatia) is a cultural region and a territorial collectivity in eastern France, on the west bank of the upper Rhine next to Germany and Switzerland. In 2020, it had ...

and a large part of the

Swiss Plateau The Swiss Plateau or Central Plateau (german: Schweizer Mittelland; french: plateau suisse; it, altopiano svizzero) is one of the three major landscapes in Switzerland, lying between the Jura Mountains and the Swiss Alps. It covers about 30% of ...

. *

April April is the fourth month of the year in the Gregorian and Julian calendars. It is the first of four months to have a length of 30 days, and the second of five months to have a length of less than 31 days. April is commonly associated with ...

–

Battle of Thyatira The Battle of Thyatira was fought in 366 at Thyatira, Lydia (modern Turkey), between the army of the Roman Emperor Valens and the army of the usurper Procopius, led by his general Gomoarius. Background After the death of the emperor Juli ...

: Emperor

Valens Valens ( grc-gre, Ουάλης, Ouálēs; 328 – 9 August 378) was Roman emperor from 364 to 378. Following a largely unremarkable military career, he was named co-emperor by his elder brother Valentinian I, who gave him the eastern half of ...

defeats the troops of

Procopius Procopius of Caesarea ( grc-gre, Προκόπιος ὁ Καισαρεύς ''Prokópios ho Kaisareús''; la, Procopius Caesariensis; – after 565) was a prominent late antique Greek scholar from Caesarea Maritima. Accompanying the Roman gen ...

, bringing an end to his revolt;

Serenianus Serenianus (died in Lydia, 366) was an officer of the Roman Empire, involved in the death of Caesar Constantius Gallus and in the usurpation of Procopius. Biography Serenianus was born in Pannonia.Ammianus Marcellinus, xxvi.5.3. attended at ...

and Marcellus are killed. Procopius flees the battlefield, but is executed by Valens. * Valens builds a

pontoon bridge A pontoon bridge (or ponton bridge), also known as a floating bridge, uses floats or shallow-draft boats to support a continuous deck for pedestrian and vehicle travel. The buoyancy of the supports limits the maximum load that they can carry. ...

across the

Danube The Danube ( ; ) is a river that was once a long-standing frontier of the Roman Empire and today connects 10 European countries, running through their territories or being a border. Originating in Germany, the Danube flows southeast for , p ...

, and drives the

Visigoths The Visigoths (; la, Visigothi, Wisigothi, Vesi, Visi, Wesi, Wisi) were an early Germanic people who, along with the Ostrogoths, constituted the two major political entities of the Goths within the Roman Empire in late antiquity, or what is ...

farther north, where they will come under pressure from the advancing

Huns The Huns were a nomadic people who lived in Central Asia, the Caucasus, and Eastern Europe between the 4th and 6th century AD. According to European tradition, they were first reported living east of the Volga River, in an area that was part ...

. * Winter – Emperor

Valentinian I Valentinian I ( la, Valentinianus; 32117 November 375), sometimes called Valentinian the Great, was Roman emperor from 364 to 375. Upon becoming emperor, he made his brother Valens his co-emperor, giving him rule of the eastern provinces. Val ...

appoints

Jovinus :''Jovinus is a Roman cognomen, most often used for a 5th-century Roman usurper emperor. This article is about the Roman usurper. For the saint, see Saint Jovinus. For the Frankish duke, see Jovinus of Provence.'' For the 4th century Roman genera ...

, his

Master of the Horse Master of the Horse is an official position in several European nations. It was more common when most countries in Europe were monarchies, and is of varying prominence today. (Ancient Rome) The original Master of the Horse ( la, Magister Equitu ...

(''Magister Equitum''), general of the army. He defeats the Alamanni in three successive battles, and pushes them out of

Gaul Gaul ( la, Gallia) was a region of Western Europe first described by the Romans. It was inhabited by Celtic and Aquitani tribes, encompassing present-day France, Belgium, Luxembourg, most of Switzerland, parts of Northern Italy (only during ...

By topic

Art and Science

* The ''

Tabula Peutingeriana ' (Latin for "The Peutinger Map"), also referred to as Peutinger's Tabula or Peutinger Table, is an illustrated ' (ancient Roman road map) showing the layout of the '' cursus publicus'', the road network of the Roman Empire. The map is a 13th-ce ...

'', a map showing Roman possessions and roads, is created about this time.

Religion

January 31 Events Pre-1600 * 314 – Pope Sylvester I is consecrated, as successor to the late Pope Miltiades. *1208 – The Battle of Lena takes place between King Sverker II of Sweden and his rival, Prince Eric, whose victory puts him on the ...

– Athanasius of Alexandria returns from his fifth exile. He has spent four months in his ancestral

tomb A tomb ( grc-gre, τύμβος ''tumbos'') is a repository for the remains of the dead. It is generally any structurally enclosed interment space or burial chamber, of varying sizes. Placing a corpse into a tomb can be called ''immureme ...

outside

Alexandria Alexandria ( or ; ar, ٱلْإِسْكَنْدَرِيَّةُ ; grc-gre, Αλεξάνδρεια, Alexándria) is the second largest city in Egypt, and the largest city on the Mediterranean coast. Founded in by Alexander the Great, Alexandri ...

. *

Buddhist Buddhism ( , ), also known as Buddha Dharma and Dharmavinaya (), is an Indian religion or philosophical tradition based on teachings attributed to the Buddha. It originated in northern India as a -movement in the 5th century BCE, and ...

monk Lè Zūn has a vision of "golden rays of light shining down on 1,000 Buddhas", resulting in the creation of the

Mogao Caves The Mogao Caves, also known as the Thousand Buddha Grottoes or Caves of the Thousand Buddhas, form a system of 500 temples southeast of the center of Dunhuang, an oasis located at a religious and cultural crossroads on the Silk Road, in Gansu p ...

. *

October 1 Events Pre-1600 * 331 BC – Alexander the Great defeats Darius III of Persia in the Battle of Gaugamela. * 366 – Pope Damasus I is consecrated. * 959 – Edgar the Peaceful becomes king of all England, in succession to Eadw ...

– Pope Liberius dies after a 14-year reign and is succeeded by

Damasus I Pope Damasus I (; c. 305 – 11 December 384) was the bishop of Rome from October 366 to his death. He presided over the Council of Rome of 382 that determined the canon or official list of sacred scripture. He spoke out against major heresies (i ...

as 37th

pope The pope ( la, papa, from el, πάππας, translit=pappas, 'father'), also known as supreme pontiff ( or ), Roman pontiff () or sovereign pontiff, is the bishop of Rome (or historically the patriarch of Rome), head of the worldwide Cathol ...

. Romans unhappy with this choice elect the

antipope Ursicinus Ursicinus, also known as Ursinus, was elected pope in a violently contested election in 366 as a rival to Pope Damasus I. He ruled in Rome for several months in 366–367, was afterwards declared antipope, and died after 381. Background In 355, ...

Births

January 18 Events Pre-1600 * 474 – Seven-year-old Leo II succeeds his maternal grandfather Leo I as Byzantine emperor. He dies ten months later. * 532 – Nika riots in Constantinople fail. * 1126 – Emperor Huizong abdicates the Chi ...

–

Valentinianus Galates Valentinianus Galates (Greek: Ούαλεντινιανός Γαλάτης, 18 January 366 – ) was the only son of the Roman emperor Valens (), who ruled the Roman Empire during Late Antiquity. Born into the ruling Valentinianic dynasty, Valentin ...

, Roman emperor (d.

370 __NOTOC__ Year 370 ( CCCLXX) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Valens (or, less frequently, year 1123 ''Ab ...

) *

Yao Xing Yao Xing (; 366–416), courtesy name Zilüe (子略), formally Emperor Wenhuan of (Later) Qin ((後)秦文桓帝), was an emperor of the Qiang-led Chinese Later Qin dynasty. He was the son of the founding emperor Yao Chang (Emperor Wucheng). Fo ...

, Chinese emperor of the

Later Qin Dynasty The Later Qin (; 384–417), also known as Yao Qin (), was a state ruled by the Qiang ethnicity of the Sixteen Kingdoms during the Jin dynasty (266–420) in China. The Later Qin is entirely distinct from the Qin dynasty, the Former Qin and the W ...

(d. 416)

Deaths

* May 16 –

Ajabel Abdisho and Abda were two successive bishops of Kashkar who were martyred along with 38 companions in 376 during the Forty-Year Persecution in the Sasanian Empire. Accused by his nephew of being a spy for the Roman Empire, Abdisho was arrested ...

, Christian priest and martyr * May 27 –

, Roman general and usurper *

August 1 Events Pre-1600 *30 BC – Octavian (later known as Augustus) enters Alexandria, Egypt, bringing it under the control of the Roman Republic. *AD 69 – Batavian rebellion: The Batavians in Germania Inferior (Netherlands) revolt under ...

– Leo of Montefeltro, Christian bishop and saint *

September 24 Events Pre-1600 *787 – Second Council of Nicaea: The council assembles at the church of Hagia Sophia. *1568 – Spanish naval forces defeat an English fleet, under the command of John Hawkins, at the Battle of San Juan de Ulúa near ...

– Liberius, pope of the

Catholic Church The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...

(b.

310 __NOTOC__ Year 310 ( CCCX) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Andronicus and Probus (or, less frequently, year 1063 '' ...

)

Date unknown

Acacius of Caesarea Acacius of Caesarea ( el, Ἀκάκιος; date of birth unknown, died in 366) was a Christian bishop probably originating from Syria; Acacius was the pupil and biographer of Eusebius and his successor on the see of Caesarea Palestina. Acacius is ...

, Christian bishop * Marcellus, Roman general and usurper * Marinus, Christian

hermit A hermit, also known as an eremite (adjectival form: hermitic or eremitic) or solitary, is a person who lives in seclusion. Eremitism plays a role in a variety of religions. Description In Christianity, the term was originally applied to a Ch ...

and saint (b.

275 __NOTOC__ Year 275 ( CCLXXV) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Aurelianus and Marcellinus (or, less frequently, year 10 ...

) *

, Roman general of the

Imperial Guard An imperial guard or palace guard is a special group of troops (or a member thereof) of an empire, typically closely associated directly with the Emperor or Empress. Usually these troops embody a more elite status than other imperial forces, i ...

Yu Daolian Yu Daolian (庾道憐) (died 5 July 366), formally Empress Xiao (孝皇后, literally "the filial empress"), was an empress of Jin Dynasty (266–420). Her husband was Emperor Fei of Jin. Yu Daolian was the daughter of Yu Bing (Eastern Jin), Yu B ...

, Chinese empress and wife of Jin Feidi *

Zhi Dun Zhi Dun (; 314-366 CE) was a Chinese Buddhist monk and philosopher. A Chinese author, scholar, and confidant of Chinese government officials in 350 CE, he claimed that all who followed Buddhism would, at the end of their life, enter Nirvana. ...

, Chinese Buddhist monk and philosopher (b.

314 __NOTOC__ Year 314 ( CCCXIV) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Rufius and Annianus (or, less frequently, year 1067 '' ...

)

References

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