678 BC
| Millennium: | 1st millennium BC |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| Gregorian calendar | 678 BC DCLXXVII BC |
| Ab urbe condita | 76 |
| Ancient Egypt era | XXV dynasty, 75 |
| - Pharaoh | Taharqa, 13 |
| Ancient Greek era | 25th Olympiad, year 3 |
| Assyrian calendar | 4073 |
| Bengali calendar | −1270 |
| Berber calendar | 273 |
| Buddhist calendar | −133 |
| Burmese calendar | −1315 |
| Byzantine calendar | 4831–4832 |
| Chinese calendar |
壬寅年 (Water Tiger) 2019 or 1959 — to — 癸卯年 (Water Rabbit) 2020 or 1960 |
| Coptic calendar | −961 – −960 |
| Discordian calendar | 489 |
| Ethiopian calendar | −685 – −684 |
| Hebrew calendar | 3083–3084 |
| Hindu calendars | |
| - Vikram Samvat | −621 – −620 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2423–2424 |
| Holocene calendar | 9323 |
| Iranian calendar | 1299 BP – 1298 BP |
| Islamic calendar | 1339 BH – 1338 BH |
| Javanese calendar | N/A |
| Julian calendar | N/A |
| Korean calendar | 1656 |
| Minguo calendar | 2589 before ROC 民前2589年 |
| Nanakshahi calendar | −2145 |
| Thai solar calendar | −135 – −134 |
...
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