276 BC

276 BC in various calendars
Gregorian calendar	276 BC; CCLXXVI BC
Ab urbe condita	478
Ancient Egypt era	XXXIII dynasty, 48
- Pharaoh	Ptolemy II Philadelphus, 8
Ancient Greek era	126th Olympiad (victor)¹
Assyrian calendar	4475
Balinese saka calendar	N/A
Bengali calendar	−868
Berber calendar	675
Buddhist calendar	269
Burmese calendar	−913
Byzantine calendar	5233–5234
Chinese calendar	甲申年 (Wood Monkey); 2422 or 2215; — to —; 乙酉年 (Wood Rooster); 2423 or 2216
Coptic calendar	−559 – −558
Discordian calendar	891
Ethiopian calendar	−283 – −282
Hebrew calendar	3485–3486
Hindu calendars
- Vikram Samvat	−219 – −218
- Shaka Samvat	N/A
- Kali Yuga	2825–2826
Holocene calendar	9725
Iranian calendar	897 BP – 896 BP
Islamic calendar	925 BH – 924 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2058
Minguo calendar	2187 before ROC; 民前2187年
Nanakshahi calendar	−1743
Seleucid era	36/37 AG
Thai solar calendar	267–268
Tibetan calendar	阳木猴年; (male Wood-Monkey); −149 or −530 or −1302; — to —; 阴木鸡年; (female Wood-Rooster); −148 or −529 or −1301

250 BC in various calendars
Gregorian calendar	250 BC; CCL BC
Ab urbe condita	504
Ancient Egypt era	XXXIII dynasty, 74
- Pharaoh	Ptolemy II Philadelphus, 34
Ancient Greek era	132nd Olympiad, year 3
Assyrian calendar	4501
Balinese saka calendar	N/A
Bengali calendar	−842
Berber calendar	701
Buddhist calendar	295
Burmese calendar	−887
Byzantine calendar	5259–5260
Chinese calendar	庚戌年 (Metal Dog); 2448 or 2241; — to —; 辛亥年 (Metal Pig); 2449 or 2242
Coptic calendar	−533 – −532
Discordian calendar	917
Ethiopian calendar	−257 – −256
Hebrew calendar	3511–3512
Hindu calendars
- Vikram Samvat	−193 – −192
- Shaka Samvat	N/A
- Kali Yuga	2851–2852
Holocene calendar	9751
Iranian calendar	871 BP – 870 BP
Islamic calendar	898 BH – 897 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2084
Minguo calendar	2161 before ROC; 民前2161年
Nanakshahi calendar	−1717
Seleucid era	62/63 AG
Thai solar calendar	293–294
Tibetan calendar	阳金狗年; (male Iron-Dog); −123 or −504 or −1276; — to —; 阴金猪年; (female Iron-Pig); −122 or −503 or −1275

Events

The Egyptian King Ptolemy II's first wife, Arsinoe I (daughter of the late King Lysimachus of Thrace) is accused, probably at instigation of Ptolemy II's sister (who also has the name Arsinoe), of plotting his murder and is exiled by the King. Arsinoe then marries her own brother, a customary practice in Egypt, but scandalous to the Greeks. The suffix "Philadelphoi" ("Brother-Loving") consequently is added to the names of King Ptolemy II and Queen Arsinoe II. The former queen, Arsinoe I, is banished to Coptos, a city of Upper Egypt near the Wadi Hammamat, while her rival adopts her children.
The first of the Syrian Wars starts between Egypt's Ptolemy II and Seleucid emperor Antiochus I Soter. The Egyptians invade northern Syria, but Antiochus defeats and repels his opponent's army.

Pyrrhus negotiates with the Carthaginians to end the fighting between them in Sicily. The Carthaginians are inclined to come to terms with Pyrrhus, but he demands that Carthage abandon all of Sicily and make the Libyan Sea the boundary between Carthage and the Greeks. Meanwhile, he begins to display despotic behaviour towards the Sicilian Greeks and soon Sicilian opinion moves against him. Therefore, fearing that his successes in Sicily may lead him to become the despot of their country, the Syracusans ask Pyrrhus to leave Sicily. He does so, and returns to the Italian mainland, noting that he expects Sicily to be a "fair wrestling ring" for Carthage and Rome.