January 2025 Holiday Calendar. Explore the 2025 holidays and key observances in the u.s., with dates, weekdays, and countdowns. Across europe, new year's eve festivities on december 31 are lively, with fireworks, parties, and gatherings, often carrying over into new year’s day.
Below is a list of some of the most common holidays in january 2025. Certainly, there’s no shortage of january national holidays and international holidays to mark on your calendar this month.