Week 42 of the year
When is week 42? The exact Monday–Sunday dates of ISO week 42 for every year from 2024 to 2032.
Week 42 of 2026 runs from Monday, Oct 12, 2026 to Sunday, Oct 18, 2026 (October). Week 42 of 2026 is 13 weeks away. ISO week code: 2026-W42.
Week 42 dates by year
| Year | Week 42 starts (Mon) | Week 42 ends (Sun) | Month |
|---|---|---|---|
| 2024 | Monday, October 14, 2024 | Sunday, October 20, 2024 | October |
| 2025 | Monday, October 13, 2025 | Sunday, October 19, 2025 | October |
| 2026 | Monday, October 12, 2026 | Sunday, October 18, 2026 | October |
| 2027 | Monday, October 18, 2027 | Sunday, October 24, 2027 | October |
| 2028 | Monday, October 16, 2028 | Sunday, October 22, 2028 | October |
| 2029 | Monday, October 15, 2029 | Sunday, October 21, 2029 | October |
| 2030 | Monday, October 14, 2030 | Sunday, October 20, 2030 | October |
| 2031 | Monday, October 13, 2031 | Sunday, October 19, 2031 | October |
| 2032 | Monday, October 11, 2032 | Sunday, October 17, 2032 | October |
All weeks
Frequently asked questions
What month is week 42 in?
Week 42 typically falls in October. The exact dates shift by up to a few days from year to year because week 1 is anchored to January 4, not January 1.
How do I write week 42 as a week code?
The ISO code is the year plus W42 — for example 2026-W42, short form 26W42, or YYWW date code 2642. See week number formats.
Are these dates the same in every country?
Yes for ISO 8601 (Monday-start) numbering, which is what this table shows. US Sunday-start calendars can label the same days with a number one higher — see week start conventions.