450 BC

450 BC in various calendars
Gregorian calendar	450 BC; CDL BC
Ab urbe condita	304
Ancient Egypt era	XXVII dynasty, 76
- Pharaoh	Artaxerxes I of Persia, 16
Ancient Greek era	82nd Olympiad, year 3
Assyrian calendar	4301
Balinese saka calendar	N/A
Bengali calendar	−1043 – −1042
Berber calendar	501
Buddhist calendar	95
Burmese calendar	−1087
Byzantine calendar	5059–5060
Chinese calendar	庚寅年 (Metal Tiger); 2248 or 2041; — to —; 辛卯年 (Metal Rabbit); 2249 or 2042
Coptic calendar	−733 – −732
Discordian calendar	717
Ethiopian calendar	−457 – −456
Hebrew calendar	3311–3312
Hindu calendars
- Vikram Samvat	−393 – −392
- Shaka Samvat	N/A
- Kali Yuga	2651–2652
Holocene calendar	9551
Iranian calendar	1071 BP – 1070 BP
Islamic calendar	1104 BH – 1103 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	1884
Minguo calendar	2361 before ROC; 民前2361年
Nanakshahi calendar	−1917
Thai solar calendar	93–94
Tibetan calendar	阳金虎年; (male Iron-Tiger); −323 or −704 or −1476; — to —; 阴金兔年; (female Iron-Rabbit); −322 or −703 or −1475

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	−843 – −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

Athenian general Cimon sails to Cyprus with two hundred triremes of the Delian League. From there, he sends sixty ships to Egypt to help the Egyptians under Amyrtaeus, who is fighting the Persians in the Nile Delta. Cimon uses the remaining ships to aid an uprising of the Cypriot Greek city-states against Persian control of the island. Cimon lays siege to the Persians stronghold of Citium on the south west coast of Cyprus. However, the siege fails and Cyprus remains under Phoenician (and Persians) control.
During the siege Cimon dies and the command of the fleet is given to Anaxicrates, who leaves Citium to engage the Phoenician fleet in the Battle of Salamis in Cyprus. The Greek fleet is victorious against the Persians and their allies and then returns to Athens.
The Athenians reduce the tribute due from their subject city-states (ie members of the Delian League), and each city is allowed to issue its own coinage.
The Temple of Theseus is completed in Athens.

The success of the first Decemvirate prompts the appointment of a second Decemvirate which also includes plebians amongst its members. This second decemviri adds two more headings to their predecessor's ten, completing the Law of the Twelve Tables (Lex Duodecim Tabularum), which will form the centrepiece of Roman law for the next several centuries. Nevertheless, this Decemvirate's rule becomes increasingly violent and tyrannical.

After minor preliminary successes (including the capture of Inessa from its Greek colonists), Ducetius, a Hellenised leader of the Siculi, an ancient people of Sicily, is decisively defeated by the combined forces of Syracuse and Acragas. Ducetius flees to exile in Corinth.

The transitional (Early Classical) period of sculpture ends in Ancient Greece and is succeeded by the High Classical period (approximate date).
Polykleitos of Argos develops a set of rules for constracting the ideal human figure (approximate date).
Polygnotos of Thasos ceases his work (approximate date).
The old bouleuterion, the west side of the agora in Athens, is built (approximate date).
Polykleitos makes the bronze statue The Spear Bearer (Doryphoros). A Roman copy of the original bronze is now kept in the Museo Archeologico Nazionale in Naples, Italy (approximate date).
The grave stela from Paros, Little girl with a bird, is made. It is now kept at The Metropolitan Museum of Art in New York (approximate date).
The statue Woman and maid in the style of Achilles Painter, white-ground and black-figure decoration on a lekythos, with additional painting in tempera, is made. It is now kept at the Museum of Fine Arts in Boston (approximate date).
Myron makes a bronze statue called The Discus Thrower (Discobolus). A Roman copy is now kept at Museo Nazionale Romano, Rome (approximate date).