January 2025 Calendar Holidays And Observances Us. Us federal holidays are listed within the calendar. 2025 usa federal calendar of upcoming federal holidays and special occasions in the united states to help you plan your vacations and holidays.

National science fiction day #nationalsciencefictionday january 4: January 1, 2025 (wednesday) new year’s day marks the beginning of the calendar year and is celebrated across the united states with festivities,.