312
Lua error in package.lua at line 80: module 'Module:Ancient Olympiads' not found.
| Millennium: | 1st millennium |
|---|---|
| Centuries: | 3rd century – 4th century – 5th century |
| Decades: | 280s 290s 300s – 310s – 320s 330s 340s |
| Years: | 309 310 311 – 312 – 313 314 315 |
312 Media
312 (CCCXII) was a leap year starting on Tuesday of the Julian calendar, the 312th year of the Common Era (CE) and Anno Domini (AD) designations, the 312th year of the 1st millennium, the 12th year of the 4th century, and the 3rd year of the 310s decade. As of the start of 312, the Gregorian calendar was 1 day ahead of the Julian calendar, which was the dominant calendar of the time.
Events
- October 28 – Battle of Milvian Bridge: Constantine I defeats Maxentius and becomes the only Roman Emperor in the West.
- Construction of the Arch of Constantine in Rome begun.