New Year is the time at which a new calendar year begins and the calendar's year count is incremented. In many cultures, the event is celebrated in some manner.The New Year of the Gregorian calendar, today in worldwide use, falls on 1 January, as was the case with the Roman calendar. There are numerous calendars that remain in regional use that calculate the New Year differently.
The order of months in the Roman calendar was January to December since King Numa Pompilius in about 700 BC, according to Plutarch and Macrobius. According to Catholic tradition, 1 January is the day of the circumcision of Jesus (on the eighth day from his birth), when the name of Jesus was given to him . (Source : Wikipedia.org)