31 BC

Year 31 BC was either a common year starting on Tuesday, Wednesday or Thursday or a leap year starting on Tuesday or Wednesday (link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for further information) and a common year starting on Tuesday of the Proleptic Julian calendar. At the time, it was known as the Year of the Consulship of Antonius and Octavianus (or, less frequently, year 723 Ab urbe condita). The denomination 31 BC 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.

Millennium: 1st millennium BC
Centuries:
Decades:
Years:
31 BC in various calendars
Gregorian calendar31 BC
XXX BC
Ab urbe condita723
Ancient Egypt eraXXXIII dynasty, 293
- PharaohCleopatra VII, 21
Ancient Greek era187th Olympiad, year 2
Assyrian calendar4720
Balinese saka calendarN/A
Bengali calendar−623
Berber calendar920
Buddhist calendar514
Burmese calendar−668
Byzantine calendar5478–5479
Chinese calendar己丑年 (Earth Ox)
2666 or 2606
     to 
庚寅年 (Metal Tiger)
2667 or 2607
Coptic calendar−314 – −313
Discordian calendar1136
Ethiopian calendar−38 – −37
Hebrew calendar3730–3731
Hindu calendars
 - Vikram Samvat26–27
 - Shaka SamvatN/A
 - Kali Yuga3070–3071
Holocene calendar9970
Iranian calendar652 BP – 651 BP
Islamic calendar672 BH – 671 BH
Javanese calendarN/A
Julian calendar31 BC
XXX BC
Korean calendar2303
Minguo calendar1942 before ROC
民前1942年
Nanakshahi calendar−1498
Seleucid era281/282 AG
Thai solar calendar512–513
Tibetan calendar阴土牛年
(female Earth-Ox)
96 or −285 or −1057
     to 
阳金虎年
(male Iron-Tiger)
97 or −284 or −1056
The Battle of Actium

Events

Roman Republic

  • Gaius Julius Caesar Octavian becomes Roman Consul for the third time. His partner is Marcus Valerius Messalla Corvinus, replacing Mark Antony
  • Octavian crosses the Strait of Otranto and lands with an army (15 legions) at Panormus in Dalmatia. He marches to Toryne in the south, and establishes a bridgehead at the Gulf of Ambracia.
  • Marcus Vipsanius Agrippa sails with 300 war galleys to the western Peloponnese, and occupies strategic positions around the Gulf of Corinth to cut off Antony's line of communication.
  • Antony, alerted by Octavian's presence, sets up camp on the southern shore, at the promontory of Actium. He dispatches a force to isolate the camp of Octavian in the valley of Louros.
  • Agrippa storms Leucas, giving Octavian an anchorage and a second depot for his land supplies. He seizes the garrison at Patrae, and takes Antony's headquarters.
  • Amyntas, king of Galatia, deserts with 2,000 cavalry to Octavian. One-third of Antony's oarsmen are lost to malnutrition, disease and desertion.
  • September 2 Roman Civil War: Battle of Actium: Off the western coast of Greece, Octavian Caesar defeats naval forces under Mark Antony and Cleopatra VII.
  • The Egyptian fleet (60 warships), including Cleopatra's treasure ship, retreats to Taenarus. Antony transfers his flag to a smaller vessel and breaks through Octavian's line.
  • Winter Octavian (32 years old) takes court at Samos. After his decisive victory at Actium he builds Nicopolis; the city is populated by Greeks from settlements further inland.

Roman Palestine

  • In the Judean Desert on an isolated rock plateau, fortress Masada is completed. Herod the Great builds an armory, barracks, storehouses and a palace.
  • 31 BC Judea earthquake, earthquake mentioned in catalogues of historical earthquakes. It affected the Herodian Kingdom of Judea in the Holy Land.[1]

Art

  • The Hellenistic period ends (or AD 14 by some scholars).

Births

  • Aristobulus IV, Jewish prince of Judea (d. 7 BC)
  • Tiruvalluvar, Indian poet and philosopher

Deaths

  • Gnaeus Domitius Ahenobarbus, Roman general and politician
  • Tarcondimotus I, Roman client king of Cilicia

References

  1. Karcz, 2004, p. 774-778

Bibliography

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