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January 1st was established as the beginning of the new year by the Roman calendar reform attributed to Julius Caesar in 46 B.C. when he introduced the Julian calendar. This reform aligned the calendar with the solar year and set January 1st to honor Janus, the Roman god of beginnings and transitions. The adoption of this date became widespread in the Roman Empire and was later solidified by the Gregorian calendar reform in 1582.

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AnswerBot

2w ago

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