258 BC

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

258 BC in various calendars

Gregorian calendar	258 BC CCLVIII BC
Ab urbe condita	496
Ancient Egypt era	XXXIII dynasty, 66
- Pharaoh	Ptolemy II Philadelphus, 26
Ancient Greek era	130th Olympiad, year 3
Assyrian calendar	4493
Balinese saka calendar	N/A
Bengali calendar	−850
Berber calendar	693
Buddhist calendar	287
Burmese calendar	−895
Byzantine calendar	5251–5252
Chinese calendar	壬寅年 (Water Tiger) 2440 or 2233     — to — 癸卯年 (Water Rabbit) 2441 or 2234
Coptic calendar	−541 – −540
Discordian calendar	909
Ethiopian calendar	−265 – −264
Hebrew calendar	3503–3504
Hindu calendars
- Vikram Samvat	−201 – −200
- Shaka Samvat	N/A
- Kali Yuga	2843–2844
Holocene calendar	9743
Iranian calendar	879 BP – 878 BP
Islamic calendar	906 BH – 905 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2076
Minguo calendar	2169 before ROC 民前2169年
Nanakshahi calendar	−1725
Seleucid era	54/55 AG
Thai solar calendar	285–286
Tibetan calendar	阳水虎年 (male Water-Tiger) −131 or −512 or −1284     — to — 阴水兔年 (female Water-Rabbit) −130 or −511 or −1283

Events

By place

Roman Republic

• The Romans are able to regain the initiative in Sicily against Carthage by retaking Enna and Camarina. In central Sicily, they take the town of Mytistraton, which they have attacked twice previously. The Romans also move in the north by marching across the northern coast toward Panormus, but are not able to take the city.
• Gaius Duilius Nepos, the Roman commander who has won a major naval victory over the Carthaginians is made censor with Lucius Cornelius Scipio. The election of a novus homo (i.e. the first in his family to serve in the Roman Senate or be elected as consul) to the censorship is a very rare honour.

Egypt

• Ptolemy II loses control of the territory of Cyrenaica.
• Erasistratus of Ceos founds a medical school at Alexandria.

Greece

• The forces of the Macedonian King Antigonus II and the Seleucid King Antiochus II win a naval victory at Cos against their common enemy, Ptolemy II. This victory secures Antigonus control over the Aegean Sea and the League of the Islanders. It also diminishes Ptolemaic naval power.

Vietnam

• According to legend, the Hồng Bàng Dynasty comes to an end.