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255 BC in various calendars
Gregorian calendar	255 BC; CCLV BC
Ab urbe condita	499
Ancient Egypt era	XXXIII dynasty, 69
- Pharaoh	Ptolemy II Philadelphus, 29
Ancient Greek era	131st Olympiad, year 2
Assyrian calendar	4496
Balinese saka calendar	N/A
Bengali calendar	−847
Berber calendar	696
Buddhist calendar	290
Burmese calendar	−892
Byzantine calendar	5254–5255
Chinese calendar	乙巳年 (Wood Snake); 2443 or 2236; — to —; 丙午年 (Fire Horse); 2444 or 2237
Coptic calendar	−538 – −537
Discordian calendar	912
Ethiopian calendar	−262 – −261
Hebrew calendar	3506–3507
Hindu calendars
- Vikram Samvat	−198 – −197
- Shaka Samvat	N/A
- Kali Yuga	2846–2847
Holocene calendar	9746
Iranian calendar	876 BP – 875 BP
Islamic calendar	903 BH – 902 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2079
Minguo calendar	2166 before ROC; 民前2166年
Nanakshahi calendar	−1722
Seleucid era	57/58 AG
Thai solar calendar	288–289
Tibetan calendar	阴木蛇年; (female Wood-Snake); −128 or −509 or −1281; — to —; 阳火马年; (male Fire-Horse); −127 or −508 or −1280

Millennium:	1st millennium BC
Centuries:	4th century BC; 3rd century BC ; 2nd century BC;
Decades:	270s BC; 260s BC; 250s BC ; 240s BC; 230s BC;
Years:	258 BC; 257 BC; 256 BC; 255 BC ; 254 BC; 253 BC; 252 BC;

Year 255 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Nobilior and Paullus (or, less frequently, year 499 Ab urbe condita). The denomination 255 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

Roman Republic

The Battle of Adis (or Adys) is fought near the city of that name, 40 miles (64 kilometres) southeast of Carthage, between Carthaginian forces and a Roman army led by Marcus Atilius Regulus. The Romans inflict a crushing defeat upon the Carthaginians, and the latter then sue for peace. The ensuing negotiations between the parties lead to Regulus demanding Carthage agree to an unconditional surrender, cede Sicily, Corsica and Sardinia to Rome, renounce the use of their navy, pay an indemnity, and sign a vassal-like treaty. These terms are so harsh that the people of Carthage resolve to keep fighting.^[1]
The Carthaginians, angered by Regulus' demands, hire Xanthippus, a Spartan mercenary, to reorganize the army. The revitalised Carthaginian army, led by Xanthippus, decisively defeat the Romans in the Battle of Tunis and capture their commander Marcus Atilius Regulus. A Roman fleet, sent to rescue Regulus and his troops, is wrecked in a storm off Sicily.^[2]

Egypt

In the Second Syrian War, Ptolemy II loses ground in Cilicia, Pamphylia, and Ionia, while Antiochus II regains Miletus and Ephesus. A peace is then concluded between Antiochus and Ptolemy under which Antiochus is to marry Ptolemy's daughter Berenice Syra.^[3]

Bactria

Diodotus I, Seleucid satrap of Bactria, rebels against Antiochus II and becomes the founder of the Greco-Bactrian Kingdom.^[4]

China

King Hui of Zhou becomes the last claimant king of the Zhou dynasty of China.^[5]

Births

Xu Fu, ancient Chinese alchemist^{[citation needed]}

References

^ LLC, Arcadian Venture. "First Punic War | Battle of Adys". Arcadian Venture LLC. Retrieved December 1, 2022.
^ "Battle of Tunis, 255 BC". www.historyofwar.org. Retrieved December 1, 2022.
^ "Second Syrian War, 260-255 BC". www.historyofwar.org. Retrieved December 1, 2022.
^ Ramirez-Faria, Carlos (2007). Concise Encyclopedia of World History. Atlantic Publishers & Dist. p. 64. ISBN 978-81-269-0775-5. Bactria was sheared of by Diodotus, a Greek viceroy, from the post-Alexandrian Seleucid Empire in 256 BCE.
^ Schinz, Alfred (1996). The Magic Square: Cities in Ancient China (2nd ed.). Stuttgart, London: Deahan Printing & Publishing Co.