December 2025 Us Calendar With Holidays. View the month calendar of december 2025 calendar including week numbers. Christmas day 2025 | observed on wednesday, december 25th 2025 new year's day 2025 | observed on wednesday, january 1st 2025 check out our federal and business holiday.

List of federal holidays and observances. Includes all united states federal holidays and presidentially mandated observance days.