"311 (year)" redirects here. For the year of the pre-Julian Roman calendar, see 311 BC.
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庚午年 (Metal Horse) 3008 or 2801 — to — 辛未年 (Metal Goat) 3009 or 2802
Coptic calendar
27–28
Discordian calendar
1477
Ethiopian calendar
303–304
Hebrew calendar
4071–4072
Hindu calendars
- Vikram Samvat
367–368
- Shaka Samvat
232–233
- Kali Yuga
3411–3412
Holocene calendar
10311
Iranian calendar
311 BP – 310 BP
Islamic calendar
321 BH – 320 BH
Javanese calendar
191–192
Julian calendar
311 CCCXI
Korean calendar
2644
Minguo calendar
1601 before ROC 民前1601年
Nanakshahi calendar
−1157
Seleucid era
622/623 AG
Thai solar calendar
853–854
Tibetan calendar
阳金马年 (male Iron-Horse) 437 or 56 or −716 — to — 阴金羊年 (female Iron-Goat) 438 or 57 or −715
Domitius Alexander (r. 308–311)
Year 311 (CCCXI) was a common year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Valerius and Maximinus (or, less frequently, year 1064 Ab urbe condita). The denomination 311 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
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By place
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Roman Empire
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April 30 – Emperor Galerius declares on his deathbed religious freedom, and issues his Edict of Serdica, ending the Diocletianic Persecution of Christians in the Eastern part of the Roman Empire.
May 5 – Galerius dies, age 51, from a gruesome disease, possibly colorectal cancer or Fournier gangrene.
Maximinus Daza and Licinius divide the Eastern Empire between themselves.
Maximinus recommences the persecution of Christians, having encouraged his subjects to petition him to do so.
Fearing an alliance between Licinius and Constantine I, Maximinus forges a secret alliance with Emperor Maxentius.
China
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July 13 – Huai of Jin, emperor of the Jin dynasty, is captured at Luoyang. The capital city is pillaged by Liu Cong, ruler of the Xiongnu state; the invaders slaughter 30,000 citizens.
By topic
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Religion
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July 2 – Pope Miltiades succeeds Eusebius as the 32nd pope of Rome.
The Donatist schism occurs in the African Church.
Births
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Deaths
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April 23 – Sima Yue (or Yuanchao), Chinese prince and regent