313

313 (CCCXIII) was a common year starting on Thursday of the Julian calendar, the 313th year of the Common Era (CE) and Anno Domini (AD) designations, the 313th year of the 1st millennium, the 13th year of the 4th century, and the 4th year of the 310s decade. As of the start of 313, the Gregorian calendar was 1 day ahead of the Julian calendar, which was the dominant calendar of the time.

Emperor Maximinus II

313 in other calendars

Gregorian calendar	313 CCCXIII
Ab urbe condita	1066
Assyrian calendar	5063
Balinese saka calendar	234–235
Bengali calendar	−280
Berber calendar	1263
Buddhist calendar	857
Burmese calendar	−325
Byzantine calendar	5821–5822
Chinese calendar	壬申年 (Water Monkey) 3009 or 2949     — to — 癸酉年 (Water Rooster) 3010 or 2950
Coptic calendar	29–30
Discordian calendar	1479
Ethiopian calendar	305–306
Hebrew calendar	4073–4074
Hindu calendars
- Vikram Samvat	369–370
- Shaka Samvat	234–235
- Kali Yuga	3413–3414
Holocene calendar	10313
Iranian calendar	309 BP – 308 BP
Islamic calendar	319 BH – 318 BH
Javanese calendar	193–194
Julian calendar	313 CCCXIII
Korean calendar	2646
Minguo calendar	1599 before ROC 民前1599年
Nanakshahi calendar	−1155
Seleucid era	624/625 AG
Thai solar calendar	855–856
Tibetan calendar	ཆུ་ཕོ་སྤྲེ་ལོ་ (male Water-Monkey) 439 or 58 or −714     — to — ཆུ་མོ་བྱ་ལོ་ (female Water-Bird) 440 or 59 or −713

Events

By place

Roman Empire

• February 3 – Edict of Milan: Constantine the Great and co-emperor Licinius give religious freedom for all. They end the persecution of Christians in the Roman Empire.
• Emperor Maximinus II fights at Bosphorus.
• April 30 – Battle of Tzirallum: Licinius defeats his rival Maximinus II. He becomes Emperor of the Eastern Roman Empire. Maximinus runs away to Nicomedia and commits suicide.

Asia

• March 14 – Emperor Jin Huidi is killed by Liu Cong, ruler of the Xiongnu state (Han Zhao).
• Crown prince Jin Mindi, age 13, becomes the new emperor of the Jin Dynasty.

By topic

Art

• Basilica of Maxentius and Constantine (Basilica Nova), Rome, is finished.

Religion

• Constantine I and Licinius accept Christianity.
• October 2 – Lateran Synod: Donatism is made a heresy.
• Arius preaches of the human nature of Jesus.

Births

• Didymus the Blind, Alexandrian theologian (approximate date)
• Shi Hong, emperor of the Chinese Jie state (d. 334)

Deaths

• Achillas, Patriarch of Alexandria
• Dowager Zhang, empress of the Xiongnu state (Han Zhao)
• March 14 – Jin Huidi, Chinese emperor of the Jin Dynasty (b. 284)
• Maximinus II, Roman Emperor (b. 270)
• Zhang Huiguang, empress of the Xiongnu state (Han Zhao)