31

This page is about the year 31. For the actual number, see thirty-one.

Millennium:	1st millennium
Centuries:	1st century BC – 1st century – 2nd century
Decades:	0s  10s  20s  – 30s –  40s  50s  60s
Years:	28 29 30 – 31 – 32 33 34

31 in other calendars

Gregorian calendar	31 XXXI
Ab urbe condita	784
Armenian calendar	N/A
Assyrian calendar	4781
Bahá'í calendar	-1813–-1812
Bengali calendar	-562
Berber calendar	981
English Regnal year	N/A
Buddhist calendar	575
Burmese calendar	-607
Byzantine calendar	5539–5540
Chinese calendar	庚寅年月日 (2667/2727--Template:Chinese calendar/day/45/26) — to — 辛卯年月日 (2668/2728--Template:Chinese calendar/day/45/27)
Coptic calendar	-253–-252
Ethiopian calendar	23–24
Hebrew calendar	3791–3792
Hindu calendars
- Vikram Samvat	87–88
- Shaka Samvat	N/A
- Kali Yuga	3132–3133
Holocene calendar	10031
Iranian calendar	591 BP – 590 BP
Islamic calendar	609 BH – 608 BH
Japanese calendar
Korean calendar	2364
Minguo calendar	1881 before ROC 民前1881年
Thai solar calendar	574

31 is a year in the 1st century.

Events

By place

Roman Empire

• Aelius Sejanus named co-Consul to the Emperor Tiberius. However, Tiberius becomes aware of Sejanus' treachery and has him arrested and executed.
• April 6 - (Good Friday) Crucifixion of Jesus (according to one dating scheme).
• Naevius Sutorius Macro becomes the leader of the Praetorian Guard after Sejanus is executed.
• Tiberius returns to Rome from Capri.

Births

• Musonius Rufus, Roman philosopher.

Deaths

• October 18 - Aelius Sejanus, Roman politician (executed)
• Marcus Velleius Paterculus, Roman historian (possibly executed as an accomplice of Sejanus)
• Livilla, niece and daughter-in-law of the emperor Tiberius (starved to death for her role in a plot to overthrow Tiberius with her lover Sejanus)
• Saint Stephen, by stoning.