Year 6 BC was a common year starting on SundayorMonday (link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for further information) and a common year starting on Friday of the Proleptic Julian calendar. At the time, it was known as the Year of the Consulship of Balbus and Vetus (or, less frequently, year 748 Ab urbe condita). The denomination 6 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.
| Millennium: | 1st millennium BC |
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| Centuries: |
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| Decades: |
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| Years: |
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| Gregorian calendar | 6 BC VI BC |
| Ab urbe condita | 748 |
| Ancient Greek era | 193rd Olympiad, year 3 |
| Assyrian calendar | 4745 |
| Balinese saka calendar | N/A |
| Bengali calendar | −598 |
| Berber calendar | 945 |
| Buddhist calendar | 539 |
| Burmese calendar | −643 |
| Byzantine calendar | 5503–5504 |
| Chinese calendar | 甲寅年 (Wood Tiger) 2692 or 2485 — to — 乙卯年 (Wood Rabbit) 2693 or 2486 |
| Coptic calendar | −289 – −288 |
| Discordian calendar | 1161 |
| Ethiopian calendar | −13 – −12 |
| Hebrew calendar | 3755–3756 |
| Hindu calendars | |
| - Vikram Samvat | 51–52 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3095–3096 |
| Holocene calendar | 9995 |
| Iranian calendar | 627 BP – 626 BP |
| Islamic calendar | 646 BH – 645 BH |
| Javanese calendar | N/A |
| Julian calendar | 6 BC VI BC |
| Korean calendar | 2328 |
| Minguo calendar | 1917 before ROC 民前1917年 |
| Nanakshahi calendar | −1473 |
| Seleucid era | 306/307 AG |
| Thai solar calendar | 537–538 |
| Tibetan calendar | 阳木虎年 (male Wood-Tiger) 121 or −260 or −1032 — to — 阴木兔年 (female Wood-Rabbit) 122 or −259 or −1031 |
