371 BC

Year 371 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Fifth year without Tribunate or Consulship (or, less frequently, year 383 Ab urbe condita). The denomination 371 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:	390s BC 380s BC 370s BC 360s BC 350s BC
Years:	374 BC 373 BC 372 BC 371 BC 370 BC 369 BC 368 BC

371 BC in various calendars

Gregorian calendar	371 BC CCCLXXI BC
Ab urbe condita	383
Ancient Egypt era	XXX dynasty, 10
- Pharaoh	Nectanebo I, 10
Ancient Greek era	102nd Olympiad, year 2
Assyrian calendar	4380
Balinese saka calendar	N/A
Bengali calendar	−963
Berber calendar	580
Buddhist calendar	174
Burmese calendar	−1008
Byzantine calendar	5138–5139
Chinese calendar	己酉年 (Earth Rooster) 2327 or 2120     — to — 庚戌年 (Metal Dog) 2328 or 2121
Coptic calendar	−654 – −653
Discordian calendar	796
Ethiopian calendar	−378 – −377
Hebrew calendar	3390–3391
Hindu calendars
- Vikram Samvat	−314 – −313
- Shaka Samvat	N/A
- Kali Yuga	2730–2731
Holocene calendar	9630
Iranian calendar	992 BP – 991 BP
Islamic calendar	1022 BH – 1021 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	1963
Minguo calendar	2282 before ROC 民前2282年
Nanakshahi calendar	−1838
Thai solar calendar	172–173
Tibetan calendar	阴土鸡年 (female Earth-Rooster) −244 or −625 or −1397     — to — 阳金狗年 (male Iron-Dog) −243 or −624 or −1396

Battle of Leuctra

Events

By place

Greece

• A fresh peace congress is summoned at Sparta. At the peace conference, the Spartan King Agesilaus II (with the support of Athens) refuses to allow the Thebans to sign the treaty on behalf of all Boeotia. The Theban statesman Epaminondas, who is boeotarch (one of the five magistrates of the Boeotian federation), maintains Thebes' position, even when it leads to the exclusion of Thebes from the peace treaty.
• Thebes' actions at the peace congress lead to a war between Sparta and Thebes. The Spartans have an army stationed on Thebes' western frontier, waiting to follow up their diplomatic success by a crushing military attack. However, at the Battle of Leuctra, the Theban generals, Epaminondas and Pelopidas, win a decisive victory over the Spartans under the other Spartan king, Cleombrotus I (who is killed in the battle). Epaminondas wins the battle with a tactical innovation which involves striking the enemy first at their strongest, instead of their weakest, point, with such crushing force that the attack is irresistible. As a result of this battle, the Boeotian federation is saved.
• Athens does not welcome the Theban victory, fearing the rising aggressiveness of Thebes. After the Theban victory, the old alliance between the Persians and the Thebans is restored.
• With the unexpected defeat of Sparta by the Thebans, the Arcadians decide to re-assert their independence. They rebuild Mantinea, form an Arcadian League and build a new federal city, Megalopolis.
• Agesipolis II succeeds his father Cleombrotus I as king of Sparta.

By topic

Astronomy

• It is suggested that the original comet associated with the Kreutz Sungrazers family of comets passes perihelion at this time. It is thought to have been observed by Aristotle and Ephorus during this year.

Births

• Chanakya, Indian philosopher and advisor (approximate date)
• Theophrastus, Greek philosopher

Deaths

• Cleombrotus I, king of Sparta (killed in the Battle of Leuctra)