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| 231 BC by topic | |
| Politics | |
| State leaders - Sovereign states | |
| Birth and death categories | |
| Births - Deaths | |
| Establishments and disestablishments categories | |
| Establishments - Disestablishments | |
| Gregorian calendar | 231 BC |
| Ab urbe condita | 523 |
| Armenian calendar | N/A |
| Bahá'í calendar | -2074 – -2073 |
| Berber calendar | 720 |
| Buddhist calendar | 314 |
| Burmese calendar | -868 |
| Byzantine calendar | 5278 – 5279 |
| Chinese calendar | [[Sexagenary cycle|]]年 (2406/2466) — to —
[[Sexagenary cycle|]]年(2407/2467) |
| Coptic calendar | -514 – -513 |
| Ethiopian calendar | -238 – -237 |
| Hebrew calendar | 3530 – 3531 |
| Hindu calendars | |
| - Vikram Samvat | -175 – -174 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2871 – 2872 |
| Holocene calendar | 9770 |
| Iranian calendar | 852 BP – 851 BP |
| Islamic calendar | 878 BH – 877 BH |
| Japanese calendar | |
| Korean calendar | 2103 |
| Thai solar calendar | 313 |
Events
By place
Greece
- Demetrius II, king of Macedon, seeks military help from Agron, King of Illyria, a loosely organized state on the Adriatic coast north of Epirus, against the advancing Aetolians. The Illyrian army routs the Aetolians and returns home as victors.
Roman Republic
- The Romans send envoys to Massilia (modern Marseille, France) to negotiate with the Carthaginian general Hamilcar Barca who is based there.
Births
Deaths
