263 BC

Millennium:	1st millennium BC
Centuries:	4th century BC – 3rd century BC – 2nd century BC
Decades:	290s BC  280s BC  270s BC  – 260s BC –  250s BC  240s BC  230s BC
Years:	266 BC 265 BC 264 BC – 263 BC – 262 BC 261 BC 260 BC

263 BC by topic Politics State leaders – Sovereign states Birth and death categories Births – Deaths Establishments and disestablishments categories Establishments – Disestablishments

263 BC in other calendars Gregorian calendar 263 BC Ab urbe condita 491 Armenian calendar N/A Bahá'í calendar -2106 – -2105 Bengali calendar -855 Berber calendar 688 Buddhist calendar 282 Burmese calendar -900 Byzantine calendar 5246 – 5247 Chinese calendar [[Sexagenary cycle|]]年 (2374/2434) — to — [[Sexagenary cycle|]]年 (2375/2435) Coptic calendar -546 – -545 Ethiopian calendar -270 – -269 Hebrew calendar 3498 – 3499 Hindu calendars  - Bikram Samwat -206 – -205  - Shaka Samvat N/A  - Kali Yuga 2839 – 2840 Holocene calendar 9738 Iranian calendar 884 BP – 883 BP Islamic calendar 911 BH – 910 BH Japanese calendar Korean calendar 2071 Thai solar calendar 281

Events

By place

Roman Republic

• The Romans under the consul Manius Valerius Messalla secure the alliance of Hiero II of Syracuse. The treaty with Rome restricts Hiero's kingdom to southeast Sicily and the eastern coast of Sicily as far as Tauromenium. From this date until his death, Hiero remains loyal to the Romans.
• The Romans capture Hadranum.

Greece

• Alexander II of Epirus attacks and conquers the greater part of Macedonia. However, he is then driven out of both Macedonia and Epirus by Demetrius II, the son of King Antigonus II Gonatas of Macedonia.
• The Athenians and Spartans, worn down by several years of war and the devastation of their lands, make peace with Antigonus II of Macedonia who thus retains his hold on Greece.
• Cleanthes succeeds Zeno of Citium in his Stoic School in Athens.

Asia Minor

• Eumenes I succeeds his uncle Philetaerus to the throne of Pergamum. As Philetaerus was a eunuch, he adopted his nephew Eumenes (the son of Philetaerus' brother also named Eumenes) as his successor.

Births

• Antigonus III Doson, king of Macedonia from 229 to 221 BC

Deaths

• Philetaerus, founder (reigned from 282 BC) of the Attalid dynasty, a line of rulers of a powerful kingdom of Pergamum, in northwest Asia Minor (b. c. 343 BC)