45 BC – The Julian calendar takes effect as the civil calendar of the Roman Empire, establishing January 1 as the new date of the new year. 1600 –…
- Monday, April 27, 2026
Cybertrivia:
January 1 in world history45 BC – The Julian calendar takes effect as the civil calendar of the Roman Empire, establishing January 1 as the new date of the new year. 1600 –…