40 BC

Millennium:	1st millennium BC
Centuries:	2nd century BC – 1st century BC – 1st century
Decades:	70s BC  60s BC  50s BC  – 40s BC –  30s BC  20s BC  10s BC
Years:	43 BC 42 BC 41 BC – 40 BC – 39 BC 38 BC 37 BC

40 BC in other calendars

Gregorian calendar	40 BC XXXIX BC
Ab urbe condita	714
Ancient Egypt era	XXXIII dynasty, 284
- Pharaoh	Cleopatra VII, 12
Ancient Greek era	185th Olympiad (victor)¹
Assyrian calendar	4711
Balinese saka calendar	N/A
Bengali calendar	−632
Berber calendar	911
Buddhist calendar	505
Burmese calendar	−677
Byzantine calendar	5469–5470
Chinese calendar	庚辰年 (Metal Dragon) 2657 or 2597     — to — 辛巳年 (Metal Snake) 2658 or 2598
Coptic calendar	−323 – −322
Discordian calendar	1127
Ethiopian calendar	−47 – −46
Hebrew calendar	3721–3722
Hindu calendars
- Vikram Samvat	17–18
- Shaka Samvat	N/A
- Kali Yuga	3061–3062
Holocene calendar	9961
Iranian calendar	661 BP – 660 BP
Islamic calendar	681 BH – 680 BH
Javanese calendar	N/A
Julian calendar	40 BC XXXIX BC
Korean calendar	2294
Minguo calendar	1951 before ROC 民前1951年
Nanakshahi calendar	−1507
Seleucid era	272/273 AG
Thai solar calendar	503–504
Tibetan calendar	阳金龙年 (male Iron-Dragon) 87 or −294 or −1066     — to — 阴金蛇年 (female Iron-Snake) 88 or −293 or −1065

Year 40 BC was either a common year starting on Thursday, Friday or Saturday or a leap year starting on Thursday or Friday of the Julian calendar. At the time, it was known as the Year of the Consulship of Calvinus and Pollio.

Events

• Lucius Antonius surrenders to Octavian in the Siege of Perusia
• Octavian divorces Clodia Pulchra and marries Scribonia
• Sextus Pompey captures Sardinia
• Treaty of Brundisium: The Roman Republic is divided. Gaius Octavian takes control of the Western provinces. Mark Antony is given the Eastern provinces. Marcus Aemilius Lepidus controls Hispania and Africa.
• Quintus Labienus occupies Cilicia and marches with an army into Anatolia.
• Parthians conquer Jerusalem. Hyrcanus II is removed from power.
• Herod the Great flees Jerusalem to Rome. There he is titled king of Judea by Mark Antony.

Births

• Cleopatra Selene (d. AD 6) and Alexander Helios (d. between 29 and 25 BC), the twins of Cleopatra VII of Egypt and Mark Antony

Deaths

• Gaius Claudius Marcellus Minor dies, leaving Octavia Minor widowed. She will later marry Mark Antony by decree of the Roman Senate (b. 88 BC)
• Fulvia, wife of Publius Clodius Pulcher