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2014-01-04T01:03:54+01:00
The first time the new year was celebrated on January 1st was in Rome in 153 B.C.
In fact, the month of January did not even exist until around 700 B.C., when the second king of Rome, Numa Pontilius, added the months of January and February. The new year was moved from March to January because that was the beginning of the civil year, the month that the two newly elected Roman consuls—the highest officials in the Roman republic—began their one-year tenure. But this new year date was not always strictly and widely observed, and the new year was still sometimes celebrated on March 1.
After that Julian and Gregorian calendars made the same, Our calendar is the Gregorian implanted in 1582.