Over the centuries civilizations have been celebrating the birth of the new year. There have been many traditions and superstitions that have been attached to these festivities. January 1st was not the day that started it all but it is where I will start here.
A New Calendar
This is where the tradition began. Yes, it has been on January 1st since then! Amazing! Prior to 46 B.C. Rome had instituted a calendar that was 10 months (304 days). This posed a problem when the calendar began to rapidly not coincide with the patterns of the sun causing serious inaccuracies. Julius Caesar began to consult astronomers during that time to find a more consistent way to measure the days of the year.