Week 51 of 2025
Week 51 of 2025 runs from Monday, December 15, 2025, to Sunday, December 21, 2025. See all seven dates, ISO code and adjacent weeks.
ISO week 51December 15–21, 2025Monday through Sunday · 5 weekdays · 2 weekend days
Past
Week 51 at a glance
ISO code2025-W51
Calendar spanDecember
QuarterQ4 2025
Day of year349–355
Dates in week 51
| Day | Date | Type |
|---|---|---|
| Monday | Weekday | |
| Tuesday | Weekday | |
| Wednesday | Weekday | |
| Thursday | Weekday | |
| Friday | Weekday | |
| Saturday | Weekend | |
| Sunday | Weekend |
About week 51 of 2025
Week 51 of 2025 runs from December 15, 2025 through December 21, 2025. It covers December and contains five standard Monday-to-Friday weekdays.
Public holidays are country-specific and are not removed from this basic weekday count. Use the working-days calculator when holidays need to be excluded.