New Years Eve is on December 31, the last day of December, and last day of the calendar year (Gregorian calendar).
Waiting for the clock to strike 12 is a major part of celebrations.
Parties and events are one of the many things that occur in many parts of the world.
Fireworks also are a highlight in many places.
The practice of making resolutions for the new year is also a common occurence.
January 1 the day after New Years Eve is the start of the new calendar year.