ante diem xiii kalendas januarias
- Saturnalia continues (day 4) – major, popular festival in honour of Saturn with banquets, the wearing of soft caps (pilei), and general good cheer. Shops and schools were closed, gambling was legally permitted, gifts were exchanged and masters might even wait on their servants. Obviously this festival is often seen as a precursor to our modern-day Christmas celebrations.
- 69 A.D. — supporters of the Flavians capture Rome; murder of the emperor-for-a-little-while Vitellius