What dates are in week 40 of 2026?

Week 40 runs from September 28, 2026 through October 4, 2026.

How many weekdays are in week 40?

There are five Monday-to-Friday weekdays before country-specific public holidays are excluded.

Exact ISO week dates

Week 40 of 2026

Week 40 of 2026 runs from Monday, September 28, to Sunday, October 4. See every date, weekday count and adjacent ISO weeks.

ISO week 40September 28–October 4, 2026Monday through Sunday · 5 weekdays · 2 weekend days

Upcoming

Dates in week 40

Day	Date	Type
Monday	September 28, 2026	Weekday
Tuesday	September 29, 2026	Weekday
Wednesday	September 30, 2026	Weekday
Thursday	October 1, 2026	Weekday
Friday	October 2, 2026	Weekday
Saturday	October 3, 2026	Weekend
Sunday	October 4, 2026	Weekend

About week 40 of 2026

Week 40 of 2026 runs from Monday, September 28 through Sunday, October 4. It spans September and October 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.