First weekday
Monday
Last weekday
Wednesday
December 2025 in San Marino has 31 days, begins on Monday, ends on Wednesday, and includes 9 local holidays.
Online calendar
View the full December 2025 calendar for San Marino with local holidays, month facts, and quick links to nearby dates.
San Marino time
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San Marino December 2025 Calendar
First weekday
Monday
Last weekday
Wednesday
December 2025 in San Marino has 31 days, begins on Monday, ends on Wednesday, and includes 9 local holidays.