Events
Events happening today
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5
PM
31 December 2009 05:00 PM
This event begins 12/31/2009 and repeats every year until 12/31/2019
45BC - The Julian calendar was introduced by Julius Caesar in 46 BC as a reform of the Roman calendar. It came into force in 45 BC (709 ab urbe condita). It was chosen after consultation with the astronomer Sosigenes of Alexandria and was probably designed to approximate the tropical year (known at least since Hipparchus).
Calendar of Hisorical Roman Events 0 Comments
