year-end and New Year holidays
Refers to the extended holiday period covering the end of one year and the beginning of the next, typically from late December to early January in Japan.
The year-end and New Year holidays are from December 29th to January 3rd.
Many businesses close during the year-end and New Year holidays.
Compound of 年末 (year-end), 年始 (beginning of the year), and 休暇 (holiday, vacation).