391

Millennium:	1st millennium
Centuries:	3rd century – 4th century – 5th century
Decades:	360s  370s  380s  – 390s –  400s  410s  420s
Years:	388 389 390 – 391 – 392 393 394

391 by topic
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Archaeology Architecture Art Literature Poetry Music Science
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Birth and death categories
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Works category
Works

391 (CCCXCI) was a common year starting on Wednesday of the Julian calendar, the 391st year of the Common Era (CE) and Anno Domini (AD) designations, the 391st year of the 1st millennium, the 91st year of the 4th century, and the 2nd year of the 390s decade. As of the start of 391, the Gregorian calendar was 1 day ahead of the Julian calendar, which was the dominant calendar of the time.

Events

• Theodosius, the Roman Emperor, decrees that Christianity should be the only religion allowed in the Empire.

391 Media

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  The Temple of Vesta (Rome)