New Year's Eve is celebrated December 31st, the last day of the Gregorian calendar year. New Year's Eve is celebrated around the world with fireworks, parties, and the traditional midnight countdown to bring in the New Year.
New Year's Day is the first day of the Gregorian calendar year. It is a day of parades, sporting events and new years resolutions in many countries around the world.
New Years Day is a Legal U.S. Holiday which means government offices and organizations and most businesses are closed. If new years day falls on a Saturday, it will be observed on the Friday before. If it falls on a Sunday, it will be observed on the Monday after.