307 BC

Millennium:	1st millennium BC
Centuries:	5th century BC 4th century BC 3rd century BC
Decades:	320s BC 310s BC 300s BC 290s BC 280s BC
Years:	310 BC 309 BC 308 BC 307 BC 306 BC 305 BC 304 BC

307 BC in various calendars

Gregorian calendar	307 BC CCCVII BC
Ab urbe condita	447
Ancient Egypt era	XXXIII dynasty, 17
- Pharaoh	Ptolemy I Soter, 17
Ancient Greek era	118th Olympiad, year 2
Assyrian calendar	4444
Balinese saka calendar	N/A
Bengali calendar	−899
Berber calendar	644
Buddhist calendar	238
Burmese calendar	−944
Byzantine calendar	5202–5203
Chinese calendar	癸丑年 (Water Ox) 2391 or 2184     — to — 甲寅年 (Wood Tiger) 2392 or 2185
Coptic calendar	−590 – −589
Discordian calendar	860
Ethiopian calendar	−314 – −313
Hebrew calendar	3454–3455
Hindu calendars
- Vikram Samvat	−250 – −249
- Shaka Samvat	N/A
- Kali Yuga	2794–2795
Holocene calendar	9694
Iranian calendar	928 BP – 927 BP
Islamic calendar	957 BH – 955 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2027
Minguo calendar	2218 before ROC 民前2218年
Nanakshahi calendar	−1774
Seleucid era	5/6 AG
Thai solar calendar	236–237
Tibetan calendar	阴水牛年 (female Water-Ox) −180 or −561 or −1333     — to — 阳木虎年 (male Wood-Tiger) −179 or −560 or −1332

Year 307 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Caecus and Violens (or, less frequently, year 447 Ab urbe condita). The denomination 307 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.

Events

By place

Babylonia

• Antigonus makes peace with Seleucus, who is left free to consolidate his empire in the east.

Syria

• Antigonus founds the city of Antigoneia on the Orontes intended to become his eastern capital.

Asia Minor

• Antigonus prepares an expedition to Greece under his son Demetrius. They gather a fleet of 250 ships and a large army in western Asia Minor. Antigonus gives his son 5.000 talents and some of his top officers, chief among them Medius of Larissa and Aristodemus of Miletus.

Greece

• At the beginning of June (the 26th day of the Attic month of Thargelion: Plut. Dem. 8,3) Demetrius, son of Antigonus, launches a surprise attack on Pireaus, Athens' harbour, his forces are able to secure control of the entire port city, except the fortress on the Munychia which remains in the hands of Dionysius, the commander of Cassander's garrison in Athens.
• Demetrius of Phalerum, who ruled Athens for 10 years with the support of Cassander, recognizes his possition has become untenable. He opens up negotiations, and after several diplomatic exchanges involving Aristodemus of Miletus, Antigonus top diplomat, he is given safe conduct to Thebes. Eventually he settles in Alexandria
• Demetrius captures the fortress on the Munychia and razes it to the ground. The old democracy, with the old constitution, is re-establishes in Athens under the leadership of Stratocles and Demochares. The grateful Athenians honour Antigonus and Demetrius as divine saviours (theoi soteres).
• Demetrius captures Megara and there he restores the old constitution as well.
• Antigonus gives Athens control of the island of Lemnos and Imbros.
• Upon becoming ruler of Epirus, Pyrrhus allies himself with his brother-in-law, Demetrius and through him with Antigonus.

North Africa

• Agathocles, the tyrant of Syracuse, (who has been campaigning in North Africa for several years) launches a surprise attack on Utica. He captures around 300 citizens outside the walls and tries to negotiate a surrender of the city; Utica refuses. Agathocles then uses the prisoners as human shields by binding them to his siege engines.
• Agathocles assaults the walls of Utica. The Uticans, despite having to inflict death and injury on their fellow citizens, fiercely defend their city. Eventually, Agathocles' army is able to break into the city, they sacked the city and left behind a garrison.
• Agathocles besieges and takes a town called Hippu Acra. After capturing Hippu Acra several towns and cities come over to his side; even some Numidian tribes start sending their warriors to join Agathocles.
• With his expeditionary army now superior in numbers to the Carthaginians, Agathocles decides to leave his son Archagathus in command of the African campaign and return to Sicily. He starts constructing transports and when enough ships have been built sets sail for Sicily.
• Archagathus sends Eumachus, one of his father's generals, on two successful inland campaigns. On both occasions Eumachus gained a lot of war booty.
• Carthage musters (30,000 soldiers in total) and sends out three armies; one inland, one into the midlands, and one against the cities along the coast.
• Archagathus counters by dividing his army in three and sending them against the Carthaginian armies. Unfortunately for the Greeks, one army (commanded by Aeschrion) gets ambushed and another (commanded by Eumachus) is defeated in battle. Archagathus retreats to Tunis, regroups his army and sends messengers to his father in Sicily to inform him on the situation .The Carthaginians concentrate their forces at Tunis as well and start a blockade of the city.
• Agathocles returns to his expeditionary army. Trying to restore his army's moral, he fights a battle under less than ideal conditions and suffers a bloody defeat (losing 3,000 soldiers).
• During a victory ceremony involving human sacrifice (the Carthaginians sacrificed prisoners of war by burning them alive) the Carthaginian camp catches fire, in the ensuing panic the Carthaginian army breaks and flees back to Carthage.
• 5,000 Libyans deserters, who came fleeing back to Agathocles' camp, cause panic in the Greek camp, scatering the army.
• After the lost battle and the night-time panic, all his Lybian allies desert. With his army in no condition to fight on, Agathocles decides to return to Sicily; he abandons his army and secretly sails back to Sicily.

Sicily

• Xenodocus, a general from Acragas, leads an army of 10,000 infantry and 1,000 cavalry against Agathocles' generals on Sicily. Leptines and Demophilus, two of Agathocles' generals, oppose Xenoducus with 8,200 infantry and 1,200 cavalry. Xenoducus is defeated and retreats to Acragas. As a result of this defeat the people of Acragas give up the fight against Agathocles.
• Agathocles puts in at Selinus, marches on Heraclea (probably Heraclea Minoa) and forces its people to submit once more. He then marches across the island on the city of Therma, makes a treaty with its people and removes its Carthaginian garisson. After taking Cephaloedium (near Therma), he marches back south taking the cities of Centuripa and Sicily.
• Deinocrates, the leader of the exiles, proclaims himself the champion of common liberty and uses this to gather the bulk of Agathocles' enemies into one army. After mustering an army of 20,000 infantry and 1,500 cavalry, he marches on Agathocles who refuses to do battle and retreats to Syracuse.
• Receiving word of the losses that had been inflicted on his expeditionary army (commanded by his son Archagathus) in Africa, Agathocles equips 17 warships to go to his son's aid. While breaking through the Carthaginian blockade, he was able to defeat his opponents fleet.
• Leptines, one of Agathocles generals, defeats Xenodocus for the second time.
• Agathocles purges Syracuse of his opponents; 500 citizens are executed. With the city secure in his loyalty he sets sail for Africa.

China

• The Chinese King Wuling of Zhao reforms the military of the State of Zhao by putting more emphasis on cavalry over charioteers.

By topic

Philosophy

• Epicureanism, a system of philosophy based upon the teachings of Epicurus, is founded (approximate date).