| Millennium: | 1st millennium |
|---|---|
| Centuries: | 1st century BC – 1st century – 2nd century |
| Decades: | 10s BC 0s BC 0s – 10s – 20s 30s 40s |
| Years: | 9 AD 10 AD 11 AD – 12 AD – 13 AD 14 AD 15 AD |
| 12 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 12 XII |
| Ab urbe condita | 765 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1832 – -1831 |
| Bengali calendar | -581 |
| Berber calendar | 962 |
| Buddhist calendar | 556 |
| Burmese calendar | -626 |
| Byzantine calendar | 5520 – 5521 |
| Chinese calendar | 辛未年十二月十九日 (2648/2708-12-19) — to —
壬申年十二月廿九日(2649/2709-12-29) |
| Coptic calendar | -272 – -271 |
| Ethiopian calendar | 4 – 5 |
| Hebrew calendar | 3772 – 3773 |
| Hindu calendars | |
| - Bikram Samwat | 68 – 69 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3113 – 3114 |
| Holocene calendar | 10012 |
| Iranian calendar | 610 BP – 609 BP |
| Islamic calendar | 629 BH – 628 BH |
| Japanese calendar | |
| Korean calendar | 2345 |
| Thai solar calendar | 555 |
Year 12 (XII) was a leap year starting on Friday (link will display the full calendar) of the Julian calendar.