| Millennium: | 1st millennium BC | 
|---|---|
| Centuries: | |
| Decades: | |
| Years: | 
| 539 BC by topic | 
| Politics | 
|---|
| Categories | 
| 
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| Gregorian calendar | 539 BC DXXXIX BC | 
| Ab urbe condita | 215 | 
| Ancient Egypt era | XXVI dynasty, 126 | 
| - Pharaoh | Amasis II, 32 | 
| Ancient Greek era | 60th Olympiad, year 2 | 
| Assyrian calendar | 4212 | 
| Balinese saka calendar | N/A | 
| Bengali calendar | −1131 | 
| Berber calendar | 412 | 
| Buddhist calendar | 6 | 
| Burmese calendar | −1176 | 
| Byzantine calendar | 4970–4971 | 
| Chinese calendar | 辛酉年 (Metal Rooster) 2159 or 1952 — to — 壬戌年 (Water Dog) 2160 or 1953 | 
| Coptic calendar | −822 – −821 | 
| Discordian calendar | 628 | 
| Ethiopian calendar | −546 – −545 | 
| Hebrew calendar | 3222–3223 | 
| Hindu calendars | |
| - Vikram Samvat | −482 – −481 | 
| - Shaka Samvat | N/A | 
| - Kali Yuga | 2562–2563 | 
| Holocene calendar | 9462 | 
| Iranian calendar | 1160 BP – 1159 BP | 
| Islamic calendar | 1196 BH – 1195 BH | 
| Javanese calendar | N/A | 
| Julian calendar | N/A | 
| Korean calendar | 1795 | 
| Minguo calendar | 2450 before ROC 民前2450年 | 
| Nanakshahi calendar | −2006 | 
| Thai solar calendar | 4–5 | 
| Tibetan calendar | 阴金鸡年 (female Iron-Rooster) −412 or −793 or −1565 — to — 阳水狗年 (male Water-Dog) −411 or −792 or −1564 | 
The year 539 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 215 Ab urbe condita. The denomination 539 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

The Cyrus cylinder: a contemporary cuneiform script proclaims Cyrus the Great as legitimate king of Babylon.
Near East
- September 25–28? – Battle of Opis: Troops of the Persian Achaemenid Empire under Cyrus the Great decisively defeat those of the Neo-Babylonian Empire.
- October 29 – Fall of Babylon: Achaemenid troops under Gobryas enter Babylon unopposed. Cyrus enters the city, incorporating the Neo-Babylonian Empire into the Achaemenid Empire and turning the latter into the largest in the history of the world up until that point.
Births
Deaths
- Nabonidus, last king of Babylon
- Belshazzar, co-regent of Babylon
References
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