December 2025 Calendar
Holidays & observances in December 2025
- Wed, Dec 24Christmas EveObservance
- Thu, Dec 25Christmas DayFederal holiday
- Wed, Dec 31New Year's EveObservance
Moon phases
- Full moon Fri, Dec 5
- Last quarter Sat, Dec 13
- New moon Sat, Dec 20
- First quarter Sat, Dec 27
About December 2025
- Days31
- Starts onMonday
- Ends onWednesday
- ISO weeks49–1
- Weekdays (Mon–Fri)23
- Working days after federal holidays22
This printable December 2025 calendar marks Christmas Day, shows moon phases and includes a notes area. Use the options to start the week on Sunday or Monday, add ISO week numbers, or switch to the planner template with a to-do column.