The year 285 ( CCLXXXV) was a common year starting on Thursday (link will display the full calendar) 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 ...

. In the

Roman Empire The Roman Empire ( la, Imperium Romanum ; grc-gre, Βασιλεία τῶν Ῥωμαίων, Basileía tôn Rhōmaíōn) was the post- Republican period of ancient Rome. As a polity, it included large territorial holdings around the Mediter ...

, it was known as the "Year of the Consulship of Carinus and Aurelius" (or, less frequently, "year 1038 '' Ab urbe condita''"). The denomination ''285'' 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

* Spring – Emperor Carinus marches from

Britain Britain most often refers to: * The United Kingdom, a sovereign state in Europe comprising the island of Great Britain, the north-eastern part of the island of Ireland and many smaller islands * Great Britain, the largest island in the United King ...

to northern Italy, and defeats the army of usurper Sabinus Julianus at

Verona Verona ( , ; vec, Verona or ) is a city on the Adige River in Veneto, Italy, with 258,031 inhabitants. It is one of the seven provincial capitals of the region. It is the largest city municipality in the region and the second largest in nor ...

. * Summer –

Battle of the Margus The Battle of the Margus or Battle of Margum was fought in July 285 for control of the Roman Empire between the armies of Diocletian and Carinus in the valley of the Margus River (today Great Morava) in Moesia (present day Serbia), probably near ...

: Emperor Diocletian defeats the forces of Carinus in the valley of the Margus (

Serbia Serbia (, ; Serbian: , , ), officially the Republic of Serbia (Serbian: , , ), is a landlocked country in Southeastern and Central Europe, situated at the crossroads of the Pannonian Basin and the Balkans. It shares land borders with Hungar ...

). Numerous soldiers desert Carinus during the battle. Carinus then flees to the Pannonian fort of Cornacum, but he is soon slain by his officers. *

July 21 Events Pre-1600 * 356 BC – The Temple of Artemis in Ephesus, one of the Seven Wonders of the World, is destroyed by arson. * 230 – Pope Pontian succeeds Urban I as the eighteenth pope. After being exiled to Sardinia, he became t ...

July 25 Events Pre-1600 * 306 – Constantine I is proclaimed Roman emperor by his troops. * 315 – The Arch of Constantine is completed near the Colosseum in Rome to commemorate Constantine I's victory over Maxentius at the Milvian Bridge. ...

– Diocletian appoints his fellow-officer Maximian to the office of

caesar Gaius Julius Caesar (; ; 12 July 100 BC – 15 March 44 BC), was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in a civil war, an ...

, or junior co-emperor. * Carausius, naval commander at Bononia (modern-day Boulogne), is given the task of clearing the

English Channel The English Channel, "The Sleeve"; nrf, la Maunche, "The Sleeve" (Cotentinais) or ( Jèrriais), (Guernésiais), "The Channel"; br, Mor Breizh, "Sea of Brittany"; cy, Môr Udd, "Lord's Sea"; kw, Mor Bretannek, "British Sea"; nl, Het Kana ...

Frankish Frankish may refer to: * Franks, a Germanic tribe and their culture ** Frankish language or its modern descendants, Franconian languages * Francia, a post-Roman state in France and Germany * East Francia, the successor state to Francia in Germany ...

and Saxon pirates. * Maximian is sent to pacify

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 ...

, where the Bagaudae, a band of peasants, are revolting against the

Births

* St. Sylvester, Italian bishop (d. 335)

Deaths

Marcus Aurelius Carinus Marcus Aurelius Carinus (died 285) was Roman emperor from 283 to 285. The elder son of emperor Carus, he was first appointed ''Caesar'' and in the beginning of 283 co-emperor of the western portion of the empire by his father. Official accou ...

, Roman consul and emperor * Du Yu (or Yuankai), Chinese general and politician (b. 222) * Sabinus Julianus, Roman

usurper A usurper is an illegitimate or controversial claimant to power, often but not always in a monarchy. In other words, one who takes the power of a country, city, or established region for oneself, without any formal or legal right to claim it as ...

(approximate date)

References

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