243 BC

243 BC in various calendars
Gregorian calendar	243 BC; CCXLIII BC
Ab urbe condita	511
Ancient Egypt era	XXXIII dynasty, 81
- Pharaoh	Ptolemy III Euergetes, 4
Ancient Greek era	134th Olympiad, year 2
Assyrian calendar	4508
Balinese saka calendar	N/A
Bengali calendar	−835
Berber calendar	708
Buddhist calendar	302
Burmese calendar	−880
Byzantine calendar	5266–5267
Chinese calendar	丁巳年 (Fire Snake); 2455 or 2248; — to —; 戊午年 (Earth Horse); 2456 or 2249
Coptic calendar	−526 – −525
Discordian calendar	924
Ethiopian calendar	−250 – −249
Hebrew calendar	3518–3519
Hindu calendars
- Vikram Samvat	−186 – −185
- Shaka Samvat	N/A
- Kali Yuga	2858–2859
Holocene calendar	9758
Iranian calendar	864 BP – 863 BP
Islamic calendar	891 BH – 890 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2091
Minguo calendar	2154 before ROC; 民前2154年
Nanakshahi calendar	−1710
Seleucid era	69/70 AG
Thai solar calendar	300–301
Tibetan calendar	阴火蛇年; (female Fire-Snake); −116 or −497 or −1269; — to —; 阳土马年; (male Earth-Horse); −115 or −496 or −1268

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

Ptolemy III returns from Syria by a revolt in Egypt. As a result, Seleucus II is able to regain control of his kingdom with the Egyptians being pushed out of Mesopotamia and part of Northern Syria.
Ptolemy III returns from his conquests of Seleucid territory with a large amount of treasure and works of art, including many statues of Egyptian gods carried off to Persia by Cambyses. He restores the statues to the Egyptian temples and earns the title of Euergetes ("Benefactor").

Without a declaration of hostilities, Greek statesman, Aratus of Sicyon, who has gradually built up the Achaean League into a major power in Greece, makes a surprise attack on Corinth and forces the withdrawal of the Macedonian occupation troops. Megara, Troezen, and Epidaurus also desert the Macedonian King Antigonus II.
Drawing upon the tradition of the Spartan lawgiver, Lycurgus, the young Eurypontid king of Sparta, Agis IV, seeks to reform a system that distributes the land and wealth unequally and burden the poor with debt. He proposes the cancellation of debts and the division of the Spartan homeland into separate lots for each of its citizens. Full citizenship is to be extended to many perioeci (voteless freemen) and foreigners. In addition to pursuing these reforms, Agis seeks the restoration of the Lycurgan system of military training. Agis is supported by his wealthy mother and grandmother (who surrender their property), by his uncle Agesilaus, and by Lysander, who is an ephor (magistrate with the duty of limiting the power of the king).