New Year's Day in Japan is the first day of the year, which is January 1st. New year's day is a time to celebrate the beginning of a new year along with some reflections on the past year.
Celebration\ Observance
People celebrate by getting together with family and friends to eat and drink. Government offices and most businesses are closed in celebration of the day.
History
New Year's day for the Gregorian calendar is always January 1st and was initially started back in 153 BC with the old Roman Calendar system.