Week 40, 2026
ISO-8601 Standard Week
Week 40 of 2026 runs from October 5, 2026 to October 11, 2026, and 2026 has 53 weeks in total.
This week is still ahead. See the full 2026 calendar, or learn why some years have 53 weeks.
Starts On
Monday
October 05, 2026
Ends On
Sunday
October 11, 2026
This week marks approximately 76% of the year 2026 passed.
October 2026 Calendar
| Week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 40 | 28 | 29 | 30 | 1 | 2 | 3 | 4 |
| 41 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| 42 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 43 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| 44 | 26 | 27 | 28 | 29 | 30 | 31 | 1 |
Holidays in Week 40
All Weeks in 2026
Week 40 in Other Years
Compare dates and holidays for week 40 across different years:
About Week 40
Week 40 of 2026 is a standard business week consisting of 7 days. It follows the ISO-8601 convention where Monday is the first day of the week.
Working Days
In most countries, this week contains 5 working days (Monday, October 05 to Friday, October 09) and a standard 2-day weekend.