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'''AD 31''' ('''[[Roman numerals|XXXI]]''') was a [[common year starting on Monday]] of the [[Julian calendar]]. At the time, it was known as the '''Year of the [[Consulship]] of [[Tiberius]] and [[Sejanus]]''' (or, less frequently, '''year 784 ''[[Ab urbe condita]]'''''). The denomination AD 31 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 ====
* [[Sejanus|Lucius Aelius Sejanus]] is named co-[[Consul]] to Emperor [[Tiberius]].  However, Tiberius becomes aware of Sejanus' treachery and has him arrested and executed.
* [[Naevius Sutorius Macro]] becomes the leader of the [[Praetorian Guard]] after Sejanus is executed.

== Births ==
*[[Gnaeus Arrius Antoninus]], Roman consul
*[[Musonius Rufus]], Roman [[Stoicism|Stoic]] [[philosopher]] (d. 101)

== Deaths ==
* [[April 6]] &ndash; [[Jesus|Jesus of Nazareth]], founder of Christianity (possible [[date of the crucifixion]])<ref name="nature.com31">Colin J. Humphreys and W. G. Waddington, "Dating the Crucifixion ," Nature 306 (December 22/29, 1983), pp. 743-46. [http://www.nature.com/nature/journal/v306/n5945/abs/306743a0.html]</ref><ref name=Humphreys2011>[[Colin Humphreys]], ''The Mystery of the Last Supper'' (Cambridge: University Press, 2011) {{ISBN|978-0-521-73200-0}}, p. 194</ref><ref name="WPCleanerAuto1">Blinzler, J. ''Der Prozess Jesu'', fourth edition, Regensburg, Pustet, 1969, pp. 101-126</ref> (born ''circa'' [[4 BC]]) The other possible dates also supported by scholarly consensus among a survey of 100 published scholarly biblical statements are [[April 7]], [[AD 30]] and [[April 3]], [[AD 33]],<ref name="WPCleanerAuto1" /><ref name=Humphreys2011p14 >[[Colin Humphreys]], ''The Mystery of the Last Supper'' (Cambridge: University Press, 2011) {{ISBN|978-0-521-73200-0}}, pp. 14 & 62</ref> and [[April 27]], AD 31 (according to a Chodesh calculating system).<ref>http://www.snoaktrua.fyi/moon/finding-the-historical-crucifixion-date.shtml</ref>
* [[October 18]] &ndash; [[Sejanus|Lucius Aelius Sejanus]], Roman [[Praetorian prefect|prefect]] and advisor (b. [[20 BC]])
* [[Livilla|Claudia Livia Julia]], niece and daughter-in-law of [[Tiberius]] (b. [[13 BC]])<ref>{{cite book |last1=Vagi |first1=David |title=Coinage and History of the Roman Empire |date=2016 |publisher=Routledge |isbn=978-1-135-97125-0 |page=107 |url=https://books.google.com/books?id=dIEYDQAAQBAJ&pg=PT107 |language=en}}</ref>
* [[Marcus Velleius Paterculus]], Roman [[historian]] and writer (b. c. [[19 BC]])
* [[Nero Julius Caesar|Nero Julius Caesar Germanicus]], grandson and heir of Tiberius (b. [[AD 6]])

== References ==
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[[als:30er#31]]

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