Week Calendar 2025. The calendar week 01 in year 2025 from monday, 30.12.2024 to sunday, 05.01.2025. Also holidays, red days, flag days, namedays, days off, and dates for easter, pentecost, and midsummer.
Weeks are according united states calendar rules, sunday first day and weeks are sunday to saturday. Or use week calculator to know what week number will be for any date in 2025.