Week 41 2026: October 5–11, 2026
Week 41 starts on Monday, October 5, 2026 and ends on Sunday, October 11, 2026.
Quick answer
Week 41 of 2026 is the seven-day ISO week from October 5, 2026 to October 11, 2026. ISO weeks always run from Monday to Sunday.
Use week 41 in professional planning
This permanent week reference can be used in project plans, payroll notes, weekly reports, production schedules and deadline documents. Share the week number together with the ISO year and exact date range to avoid ambiguity around New Year.
For calculations that span more than one week, use the weeks between dates calculator. For work schedules, compare the same range with the business days calculator or open the project timeline calculator.
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FAQ
What are the dates for week 41 of 2026?
The dates are October 5, 2026 through October 11, 2026.
What day does this week start?
It starts on Monday.
What day does this week end?
It ends on Sunday.
How should I write this week in a report?
Use “ISO week 41 of 2026 (Oct 5–Oct 11, 2026)” so the week-year and date range are both clear.