First weekday
Monday
Last weekday
Wednesday
December 2025 in United States has 31 days, begins on Monday, ends on Wednesday, and includes 25 local holidays.
Online calendar
View the full December 2025 calendar for United States with local holidays, month facts, and quick links to nearby dates.
United States time
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United States December 2025 Calendar
First weekday
Monday
Last weekday
Wednesday
December 2025 in United States has 31 days, begins on Monday, ends on Wednesday, and includes 25 local holidays.