| 2024 | September 30 – October 6, 2024 |
| 2025 | September 29 – October 5, 2025 |
| 2026 | September 28 – October 4, 2026 |
| 2027 | October 4 – October 10, 2027 |
| 2028 | October 2 – October 8, 2028 |
| 2029 | October 1 – October 7, 2029 |
| 2030 | September 30 – October 6, 2030 |
| 2031 | September 29 – October 5, 2031 |
| 2032 | September 27 – October 3, 2032 |
Week 40 of 2027 runs from Monday, October 4, 2027 to Sunday, October 10, 2027.
Week 40 of 2027 starts in 349 days, on Monday, October 4, 2027.
It is currently week 43 of 53 in 2026 (today is Tuesday, October 20, 2026).
These are ISO 8601 week numbers (weeks start Monday; week 1 holds the year's first Thursday), the standard in Europe and in Excel's ISOWEEKNUM. The US convention (Excel's WEEKNUM) starts week 1 on January 1 with weeks starting Sunday, so its numbers can be one higher.