280 BC
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| 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: | 283 BC 282 BC 281 BC 280 BC 279 BC 278 BC 277 BC |
| Gregorian calendar | 280 BC |
| Ab urbe condita | 474 |
| Armenian calendar | N/A |
| Bahá'í calendar | -2123 – -2122 |
| Buddhist calendar | 265 |
| Chinese calendar | 2357/2417 ([[Sexagenary cycle|]]年) — to —
2358/2418([[Sexagenary cycle|]]年) |
| Ethiopian calendar | -287 – -286 |
| Hebrew calendar | 3481 – 3482 |
| Hindu calendars | |
| - Vikram Samvat | -224 – -223 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2822 – 2823 |
| Holocene calendar | 9721 |
| Iranian calendar | 901 BP – 900 BP |
| Islamic calendar | 929 BH – 928 BH |
| Japanese calendar | |
| - Imperial Year | Kōki 381 (皇紀381年) |
| - Jōmon Era | 9721 |
| Julian calendar | -234 |
| Korean calendar | 2054 |
| Thai solar calendar | 264 |
[edit] Events
[edit] By place
[edit] Egypt
- Construction of the lighthouse of Alexandria.
[edit] Greece
- Achaean League refounded.
[edit] Rome
- Battle of Heraclea (or Battle of the Siris River): The Greeks, led by Pyrrhus of Epirus, defeat with severe casualties a Roman army under Publius Valerius Laevinus, this was the first time these cultures meet in battle, Pyrrhus's judicious use of his elephants played a huge part in his victory. He was reputed to have said:"One more such victory and I am defeated."
[edit] By topic
[edit] Astronomy
- Aristarchus of Samos uses the size of the Earth's shadow on the Moon to estimate that the Moon's radius is one-third that of the Earth; Proposes for the first time an Heliocentric view of the Universe (Solar System), but is ignored due to the lack of evidence of Earth's motion
