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| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 278 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 278 CCLXXVIII |
| Ab urbe condita | 1031 |
| Assyrian calendar | 5028 |
| Balinese saka calendar | 199–200 |
| Bengali calendar | −315 |
| Berber calendar | 1228 |
| Buddhist calendar | 822 |
| Burmese calendar | −360 |
| Byzantine calendar | 5786–5787 |
| Chinese calendar | 丁酉年 (Fire Rooster) 2975 or 2768 — to — 戊戌年 (Earth Dog) 2976 or 2769 |
| Coptic calendar | −6 – −5 |
| Discordian calendar | 1444 |
| Ethiopian calendar | 270–271 |
| Hebrew calendar | 4038–4039 |
| Hindu calendars | |
| - Vikram Samvat | 334–335 |
| - Shaka Samvat | 199–200 |
| - Kali Yuga | 3378–3379 |
| Holocene calendar | 10278 |
| Iranian calendar | 344 BP – 343 BP |
| Islamic calendar | 355 BH – 354 BH |
| Javanese calendar | 157–158 |
| Julian calendar | 278 CCLXXVIII |
| Korean calendar | 2611 |
| Minguo calendar | 1634 before ROC 民前1634年 |
| Nanakshahi calendar | −1190 |
| Seleucid era | 589/590 AG |
| Thai solar calendar | 820–821 |
| Tibetan calendar | 阴火鸡年 (female Fire-Rooster) 404 or 23 or −749 — to — 阳土狗年 (male Earth-Dog) 405 or 24 or −748 |
Year 278 (CCLXXVIII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Probus and Lupus (or, less frequently, year 1031 Ab urbe condita). The denomination 278 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.