320

Millennium:	1st millennium
Centuries:	3rd century – 4th century – 5th century
Decades:	290s  300s  310s  – 320s –  330s  340s  350s
Years:	317 318 319 – 320 – 321 322 323

The Nydam oak boat at Gottorf Castle, Schleswig, (Germany)

Year 320 (CCCXX) was a leap year starting on Friday of the Julian calendar.

Roman Empire

• Crispus wins against the Franks.
• Licinius stopped the religious freedom promised by the Edict of Milan. He persecutes Christians in the Eastern Roman Empire.

Asia

• King Chandragupta I founds the Gupta dynasty in northern India.
• The Huns appear in Persia.

Art

• Old St. Peter's Basilica, Rome, is started to be built (approximate date).

Culture and Religion

• In Nydam Mose (Denmark) the Nydam oak boat is sacrificed by the Danes. The boat is excavated in the 1830s, when a local farmer finds weapons including swords and spears.
• December 25 is introduced as the birthday of Jesus.

Science

• October 18 – Pappus of Alexandria, Greek philosopher, sees an eclipse of the sun. He writes on The Great Astronomer (Almagest).

Births

• Aurelius Victor, historian and politician (approximate date)
• Constans I, Roman emperor (d. 350)
• Flavian I, Patriarch of Antioch (d. 404)
• Jin Jianwendi, emperor of the Jin Dynasty (d. 372)
• Oribasius, Greek physician (approximate date)
• Tuoba Shiyijian, prince of the Tuoba Dai (d. 376)
• Xie An, statesman of the Jin Dynasty (d. 385)

Deaths

• Lactantius, Christian writer (approximate date)
• Sima Bao, prince of the Jin Dynasty (b. 294)

320 Media

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  40 Martyrs of Sebaste