312

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This article is about the year 312. For the number, see 312 (number). For other uses, see 312 (disambiguation).

Millennium:	1st millennium
Centuries:	3rd century – 4th century – 5th century
Decades:	280s 290s 300s – 310s – 320s 330s 340s
Years:	309 310 311 – 312 – 313 314 315

312 by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishment and disestablishment categories
Establishments – Disestablishments
v t e

312 in other calendars
Gregorian calendar	312 CCCXII
Ab urbe condita	1065
Armenian calendar	N/A
Assyrian calendar	5062
Bahá'í calendar	−1532 – −1531
Bengali calendar	−281
Berber calendar	1262
English Regnal year	N/A
Buddhist calendar	856
Burmese calendar	−326
Byzantine calendar	5820–5821
Chinese calendar	辛未年 (Metal Goat) 3008 or 2948 — to — 壬申年 (Water Monkey) 3009 or 2949
Coptic calendar	28–29
Discordian calendar	1478
Ethiopian calendar	304–305
Hebrew calendar	4072–4073
Hindu calendars
- Vikram Samvat	368–369
- Shaka Samvat	234–235
- Kali Yuga	3413–3414
Holocene calendar	10312
Igbo calendar	−688 – −687
Iranian calendar	310 BP – 309 BP
Islamic calendar	320 BH – 319 BH
Japanese calendar	N/A
Juche calendar	N/A
Julian calendar	312 CCCXII
Korean calendar	2645
Minguo calendar	1600 before ROC 民前1600年
Thai solar calendar	855
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Battle of the Milvian Bridge by Giulio Romano

Year 312 (CCCXII) was a leap year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Constantinus and Licinianus (or, less frequently, year 1065 Ab urbe condita). The denomination 312 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

By place

Roman Empire

Constantine the Great crosses the Cottian Alps with an army (40,000 men) and auxiliaries. He defeats Maxentius in three battles at Turin, Brescia and Verona. Maxentius's most senior commander Ruricius Pompeianus is killed during the fightings.
October 28 – Battle of Milvian Bridge: Constantine I defeats usurper Maxentius at the Milvian Bridge and becomes the only Roman Emperor in the West. During the battle, he reportedly has a vision of a cross (labarum) with the phrase "in hoc signo vinces" ("In this sign you shall conquer").
October 29 – Constantine I enters Rome, he stages a grand adventus in the city, and is met with popular jubilation. Maxentius' body is fished out of the Tiber and decapitated.
Constantine I forged co-emperor Licinius to an alliance, and offers him his halfsister Constantia in marriage. The Praetorian Guard and Imperial Horse Guard (equites singulares Augusti) are disbanded.
Construction begins on the Arch of Constantine in Rome.
c. 312–315 – Constantine I Addresses the People in the Roman Forum, sculptural relief on the Arch of Constantine, Rome, is made.

By topic

Religion

Constantine I adopt the words "in hoc signo vinces" as a motto and have the letters X and P (the first letters of the Greek word Christ) emblazoned on the shields of his Roman legions.
The Council of Carthage supports Donatism, which espouses a rigorous application and interpretation of the sacraments. These doctrines will be condemned by the Council of Arles.
Constantine I promotes a policy of state sponsorship of Christianity, perhaps even becoming a Christian himself (see Constantine I and Christianity).

Births

Dao An, Buddhist monk of the Jin Dynasty (d. 385)
Huan Wen, general of the Jin Dynasty (d. 373)

Deaths

Guo Xiang, Chinese scholar of Xuanxue
Huyan, empress of the Xiongnu state (Han Zhao)
October 28 – Maxentius, Roman Emperor

References

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