387 BC

Year 387 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Papirius, Fidenas, Mamercinus, Lanatus and Poplicola (or, less frequently, year 367 Ab urbe condita). The denomination 387 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:	5th century BC 4th century BC 3rd century BC
Decades:	400s BC 390s BC 380s BC 370s BC 360s BC
Years:	390 BC 389 BC 388 BC 387 BC 386 BC 385 BC 384 BC

387 BC in various calendars

Gregorian calendar	387 BC CCCLXXXVII BC
Ab urbe condita	367
Ancient Egypt era	XXIX dynasty, 12
- Pharaoh	Hakor, 7
Ancient Greek era	98th Olympiad, year 2
Assyrian calendar	4364
Balinese saka calendar	N/A
Bengali calendar	−979
Berber calendar	564
Buddhist calendar	158
Burmese calendar	−1024
Byzantine calendar	5122–5123
Chinese calendar	癸巳年 (Water Snake) 2311 or 2104     — to — 甲午年 (Wood Horse) 2312 or 2105
Coptic calendar	−670 – −669
Discordian calendar	780
Ethiopian calendar	−394 – −393
Hebrew calendar	3374–3375
Hindu calendars
- Vikram Samvat	−330 – −329
- Shaka Samvat	N/A
- Kali Yuga	2714–2715
Holocene calendar	9614
Iranian calendar	1008 BP – 1007 BP
Islamic calendar	1039 BH – 1038 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	1947
Minguo calendar	2298 before ROC 民前2298年
Nanakshahi calendar	−1854
Thai solar calendar	156–157
Tibetan calendar	阴水蛇年 (female Water-Snake) −260 or −641 or −1413     — to — 阳木马年 (male Wood-Horse) −259 or −640 or −1412

Events

By place

Greece

• End of the Corinthian War:

• Peace of Antalcidas (or "the king's peace") is brokered by Artaxerxes II. Under the Peace, all the Asiatic mainland and Cyprus remain under Persian control, Lemnos, Imbros, and Scyros remain Athenian dependencies, and all the other Greek states are to receive autonomy. By the King's Peace, the Persians become key players in Greek politics.
• Under the threat of Spartan intervention, Thebes disbands its league, and Argos and Corinth end their shared government. Corinth is incorporated back into Sparta's Peloponnesian League.

• Plato founds the Platonic Academy in Athens, where he teaches Aristotle until 347 BC.

Sicily and Adriatic

• With the aid of the Lucanians, Dionysius I of Syracuse devastates the territories of Thurii, Crotone, and Locri in mainland Italy. When Rhegium falls, Dionysius becomes the chief power in Greek Southern Italy. He then turns his attention to the Adriatic and founds the colonies of Ancona (Ankon) and Adria (Adrìa).
• Plato is forced by Dionysius to leave Syracuse after having exercised the right of free speech too broadly. Plato returns to Athens, outside which he founds a school.

Roman Republic

• Rome begins to rebuild after being invaded by the Gauls under Brennus.
• Marcus Furius Camillus introduces the Capitoline Games (Ludi Capitolini) in honour of Jupiter Capitolinus, and in commemoration of Rome's Capitol not being captured by the Gauls.

Deaths

• Wen, marquis of the State of Wei, China
• Rhydondis, Greek mercenary (b. c. 386 BC)