(From japan-guide.com)

New Year (正月, shōgatsu) is the most important holiday in Japan. Most businesses shut down from January 1 to January 3, and families typically gather to spend the days together.

Years are traditionally viewed as completely separate, with each new year providing a fresh start. Consequently, all duties are supposed to be completed by the end of the year, while bonenkai parties (忘年会"year forgetting parties") are held with the purpose of leaving the old year's worries and troubles behind.

Homes and entrance gates are decorated with ornaments made of pine, bamboo and plum trees, and clothes and houses are cleaned. （大掃除 big cleaning)

On New Year's eve, toshikoshi soba (年越しそば buckwheat noodles), symbolizing longevity, are served. A more recent custom is watching the music show "kohaku uta gassen", a highly popular television program featuring many of Japan's most famous J-pop and enka singers in spectacular performances.