285 BC

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Millennium:	1st millennium BC
Centuries:	4th century BC – 3rd century BC – 2nd century BC
Decades:	310s BC 300s BC 290s BC – 280s BC – 270s BC 260s BC 250s BC
Years:	288 BC 287 BC 286 BC – 285 BC – 284 BC 283 BC 282 BC

285 BC by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishments and disestablishments categories
Establishments – Disestablishments
v t e

285 BC in other calendars
Gregorian calendar	285 BC
Ab urbe condita	469
Armenian calendar	N/A
Assyrian calendar	4466
Bahá'í calendar	−2128 – −2127
Bengali calendar	−877
Berber calendar	666
English Regnal year	N/A
Buddhist calendar	260
Burmese calendar	−922
Byzantine calendar	5224–5225
Chinese calendar	乙亥年 (Wood Pig) 2412 or 2352 — to — 丙子年 (Fire Rat) 2413 or 2353
Coptic calendar	−568 – −567
Discordian calendar	882
Ethiopian calendar	−292 – −291
Hebrew calendar	3476–3477
Hindu calendars
- Vikram Samvat	−228 – −227
- Shaka Samvat	N/A
- Kali Yuga	2817–2818
Holocene calendar	9716
Igbo calendar	−1284 – −1283
Iranian calendar	906 BP – 905 BP
Islamic calendar	934 BH – 933 BH
Japanese calendar	N/A
Juche calendar	N/A
Julian calendar	N/A
Korean calendar	2049
Minguo calendar	2196 before ROC 民前2196年
Thai solar calendar	259
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Year 285 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Canina and Lepidus (or, less frequently, year 469 Ab urbe condita). The denomination 285 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

By place

Egypt

June 26 – Egypt's Ptolemy I Soter abdicates. He is succeeded by his youngest son by his wife Berenice, Ptolemy II Philadelphus, who has been co-regent for three years.
A 110 metre tall lighthouse on the island of Pharos in Alexandria's harbour is completed and serves as a landmark for ships in the eastern Mediterranean. Built by Sostratus of Cnidus for Ptolemy II of Egypt, it is one of the seven wonders of the ancient world. It is a technological triumph and is the archetype of all lighthouses since. A broad spiral ramp leads to the top, where a fire burns at night.

Seleucid Empire

Demetrius Poliorcetes is deserted by his troops and surrenders to Seleucus at Cilicia, where Seleucus keeps him a prisoner.

Births

Deaths

Dicaearchus, Greek philosopher, cartographer, geographer, mathematician and author (b. c. 350 BC)
Theophrastus, Greek philosopher, a native of Eressos in Lesbos, the successor of Aristotle in the Peripatetic school (b. c. 370 BC)

References

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