Week 51 of 2026
Week 51 starts on Monday, December 14, 2026 and ends on Sunday, December 20, 2026.
Quick answer
Week 51 of 2026 is the seven-day ISO week from December 14, 2026 to December 20, 2026. ISO weeks always run from Monday to Sunday.
How to use this week
This week page is useful when you need a direct link to a specific date range. You can use it in project plans, reports, school schedules, travel planning or recurring reminders. Because the page includes both the week number and the start and end dates, it is clearer than sharing only a week number.
When using week numbers in business documents, include the ISO year as well as the week number. This avoids confusion around New Year, when the ISO week-year can differ from the calendar year printed on the date.
FAQ
What are the dates for week 51 of 2026?
The dates are December 14, 2026 through December 20, 2026.
What day does this week start?
It starts on Monday.
What day does this week end?
It ends on Sunday.