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 kingdom.
• Antigonus founds the city of Antigonia (Syria)

Egypt

• Ptolemy founds the Museum and Library of Alexandria with the help of Demetrius Phalereus. Like Alexander the Great, Ptolemy has studied under Aristotle and staffs the museum with some 100 professors paid by the state.

Greece

• The governor (despot) of Athens for 10 years and supporter of Cassander, Demetrius Phalereus, is obliged to flee from Athens on the approach of the Macedonian prince, Demetrius Poliorcetes. He settles in Alexandria
• Demetrius Poliorcetes re-establishes the old Athenian constitution. The grateful Athenians honour Antigonus and Demetrius as divine saviours (theoi soteres).
• Upon becoming ruler of Epirus, Pyrrhus allies himself with his brother-in-law, Demetrius Poliorcetes, son of Antigonus.

Sicily

• The tyrant of Syracuse, Agathocles is forced to return to Syracuse to deal with growing unrest in his Sicilian dominions. Those of Agathocles' army that remain behind in Carthage are soon destroyed.
• The Carthaginian general Hamilcar fails to take Syracuse and is captured and killed.
• The city of Segesta in Sicily is destroyed by Agathocles.

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).